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Miguel Vilaplana – Boeing Research & Technology Europe. The REACT Initiative. Motivation: Trajectory Synchronisation in the Future ATM System. A New ATM Paradigm: Trajectory Based-Operations (TBO) Key feature of the target concept of operations proposed by SESAR and NextGen: - PowerPoint PPT Presentation
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Seville Spain bull 24-25 June 2008
The REACT Initiative
Miguel Vilaplana ndash Boeing Research amp Technology Europe
2
REACT Workshop Seville Spain 24th-25th June 2008
Motivation Trajectory Synchronisation in the Future ATM System
bull A New ATM Paradigm Trajectory Based-Operations (TBO)
- Key feature of the target concept of operations proposed by SESAR and NextGen
- Collaborative management of business trajectories supported by advanced trajectory-based automation tools
- Trajectory-based automation tools rely on trajectory prediction
- To support the interoperability between disparate trajectory-based automation tools there is a need for mechanisms to synchronise Trajectory Predictors (TPs)
- TP synchronisation is a key prerequisite for the SESARNext Gen concepts
- The REACT project has focused on one of the types of information that can be shared between TPs to achieve synchronisation the Aircraft Intent
3
REACT Workshop Seville Spain 24th-25th June 2008
A bit of terminology
bull Business Trajectory ndash Represents the businessmission intention of an airspace userndash Evolves through a collaborative planning process that involves users and ATM service
providers and whose outcome should be a trajectory that results in minimum deviations from the user preferences
bull Interoperability is a property referring to the ability of diverse systems to work together (inter-operate)
bull A key necessary condition for the interoperability of trajectory-based automation tools is the synchronisation of the underlying TPs
bull The synchronisation of two TPs results in a minimally acceptable difference between the trajectory outputs of those TPs (this minimally acceptable difference depends on the applications supported by the TPs)
4
REACT Workshop Seville Spain 24th-25th June 2008
Towards Trajectory Based Operations (TBO)
City B
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP4
ANSP1
BUSINESS TRAJECTORIES
ANSP= Air Navigation Service ProviderAOC= Airline Operations Centre
5
REACT Workshop Seville Spain 24th-25th June 2008
Towards TBO Interoperability and TP Synchronisation
TRAJECTORY RELATED INFORMATION
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP1
ANSP4
6
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION
Towards TBO Interoperability and TP Synchronisation
TP2
TPI
TP1
TPP
TP6
TPN
TP3
TPR
TP4
TPK
TP5
TPL
TPH
FPCDampR
ASAS
FMSAMAN
FP
FDPS
FMS
FMS
ATFM
FMS
DMAN
AMAN= Arrival managerDMAN= Departure managerFMS= Flight Management SystemFP=Flight Planning
ASAS=Airborne Separation Assurance System ATFM=Air Traffic Flow ManagementFDPS=Flight Data Processing ToolCDampR=Conflict Detection and Resolution
FMS
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
2
REACT Workshop Seville Spain 24th-25th June 2008
Motivation Trajectory Synchronisation in the Future ATM System
bull A New ATM Paradigm Trajectory Based-Operations (TBO)
- Key feature of the target concept of operations proposed by SESAR and NextGen
- Collaborative management of business trajectories supported by advanced trajectory-based automation tools
- Trajectory-based automation tools rely on trajectory prediction
- To support the interoperability between disparate trajectory-based automation tools there is a need for mechanisms to synchronise Trajectory Predictors (TPs)
- TP synchronisation is a key prerequisite for the SESARNext Gen concepts
- The REACT project has focused on one of the types of information that can be shared between TPs to achieve synchronisation the Aircraft Intent
3
REACT Workshop Seville Spain 24th-25th June 2008
A bit of terminology
bull Business Trajectory ndash Represents the businessmission intention of an airspace userndash Evolves through a collaborative planning process that involves users and ATM service
providers and whose outcome should be a trajectory that results in minimum deviations from the user preferences
bull Interoperability is a property referring to the ability of diverse systems to work together (inter-operate)
bull A key necessary condition for the interoperability of trajectory-based automation tools is the synchronisation of the underlying TPs
bull The synchronisation of two TPs results in a minimally acceptable difference between the trajectory outputs of those TPs (this minimally acceptable difference depends on the applications supported by the TPs)
4
REACT Workshop Seville Spain 24th-25th June 2008
Towards Trajectory Based Operations (TBO)
City B
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP4
ANSP1
BUSINESS TRAJECTORIES
ANSP= Air Navigation Service ProviderAOC= Airline Operations Centre
5
REACT Workshop Seville Spain 24th-25th June 2008
Towards TBO Interoperability and TP Synchronisation
TRAJECTORY RELATED INFORMATION
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP1
ANSP4
6
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION
Towards TBO Interoperability and TP Synchronisation
TP2
TPI
TP1
TPP
TP6
TPN
TP3
TPR
TP4
TPK
TP5
TPL
TPH
FPCDampR
ASAS
FMSAMAN
FP
FDPS
FMS
FMS
ATFM
FMS
DMAN
AMAN= Arrival managerDMAN= Departure managerFMS= Flight Management SystemFP=Flight Planning
ASAS=Airborne Separation Assurance System ATFM=Air Traffic Flow ManagementFDPS=Flight Data Processing ToolCDampR=Conflict Detection and Resolution
FMS
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
3
REACT Workshop Seville Spain 24th-25th June 2008
A bit of terminology
bull Business Trajectory ndash Represents the businessmission intention of an airspace userndash Evolves through a collaborative planning process that involves users and ATM service
providers and whose outcome should be a trajectory that results in minimum deviations from the user preferences
bull Interoperability is a property referring to the ability of diverse systems to work together (inter-operate)
bull A key necessary condition for the interoperability of trajectory-based automation tools is the synchronisation of the underlying TPs
bull The synchronisation of two TPs results in a minimally acceptable difference between the trajectory outputs of those TPs (this minimally acceptable difference depends on the applications supported by the TPs)
4
REACT Workshop Seville Spain 24th-25th June 2008
Towards Trajectory Based Operations (TBO)
City B
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP4
ANSP1
BUSINESS TRAJECTORIES
ANSP= Air Navigation Service ProviderAOC= Airline Operations Centre
5
REACT Workshop Seville Spain 24th-25th June 2008
Towards TBO Interoperability and TP Synchronisation
TRAJECTORY RELATED INFORMATION
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP1
ANSP4
6
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION
Towards TBO Interoperability and TP Synchronisation
TP2
TPI
TP1
TPP
TP6
TPN
TP3
TPR
TP4
TPK
TP5
TPL
TPH
FPCDampR
ASAS
FMSAMAN
FP
FDPS
FMS
FMS
ATFM
FMS
DMAN
AMAN= Arrival managerDMAN= Departure managerFMS= Flight Management SystemFP=Flight Planning
ASAS=Airborne Separation Assurance System ATFM=Air Traffic Flow ManagementFDPS=Flight Data Processing ToolCDampR=Conflict Detection and Resolution
FMS
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
4
REACT Workshop Seville Spain 24th-25th June 2008
Towards Trajectory Based Operations (TBO)
City B
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP4
ANSP1
BUSINESS TRAJECTORIES
ANSP= Air Navigation Service ProviderAOC= Airline Operations Centre
5
REACT Workshop Seville Spain 24th-25th June 2008
Towards TBO Interoperability and TP Synchronisation
TRAJECTORY RELATED INFORMATION
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP1
ANSP4
6
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION
Towards TBO Interoperability and TP Synchronisation
TP2
TPI
TP1
TPP
TP6
TPN
TP3
TPR
TP4
TPK
TP5
TPL
TPH
FPCDampR
ASAS
FMSAMAN
FP
FDPS
FMS
FMS
ATFM
FMS
DMAN
AMAN= Arrival managerDMAN= Departure managerFMS= Flight Management SystemFP=Flight Planning
ASAS=Airborne Separation Assurance System ATFM=Air Traffic Flow ManagementFDPS=Flight Data Processing ToolCDampR=Conflict Detection and Resolution
FMS
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
5
REACT Workshop Seville Spain 24th-25th June 2008
Towards TBO Interoperability and TP Synchronisation
TRAJECTORY RELATED INFORMATION
AOC1
AOC2
ANSP1
ANSP2
ANSP3
ANSP1
ANSP4
6
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION
Towards TBO Interoperability and TP Synchronisation
TP2
TPI
TP1
TPP
TP6
TPN
TP3
TPR
TP4
TPK
TP5
TPL
TPH
FPCDampR
ASAS
FMSAMAN
FP
FDPS
FMS
FMS
ATFM
FMS
DMAN
AMAN= Arrival managerDMAN= Departure managerFMS= Flight Management SystemFP=Flight Planning
ASAS=Airborne Separation Assurance System ATFM=Air Traffic Flow ManagementFDPS=Flight Data Processing ToolCDampR=Conflict Detection and Resolution
FMS
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
6
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION
Towards TBO Interoperability and TP Synchronisation
TP2
TPI
TP1
TPP
TP6
TPN
TP3
TPR
TP4
TPK
TP5
TPL
TPH
FPCDampR
ASAS
FMSAMAN
FP
FDPS
FMS
FMS
ATFM
FMS
DMAN
AMAN= Arrival managerDMAN= Departure managerFMS= Flight Management SystemFP=Flight Planning
ASAS=Airborne Separation Assurance System ATFM=Air Traffic Flow ManagementFDPS=Flight Data Processing ToolCDampR=Conflict Detection and Resolution
FMS
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
7
REACT Workshop Seville Spain 24th-25th June 2008
Actual aircraft state (position speed weighthellip)
More Terminology Trajectory-Related Information
Environmental Conditions
Pilot
Real World
Trajectory Prediction (Air or Ground)
Flight Commands amp Guidance Modes
Flight Intent
Flight Plan
Tactical Amendments to Flight Plan
Airborne Automation System
Actual Trajectory
Aircraft
Predicted Trajectory
Trajectory ComputationInfrastructure
Aircraft Intent
Intent Generation
Infrastructure
Initial Conditions
Trajectory Predictor (TP)
AT or ABOVE FL290
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
8
REACT Workshop Seville Spain 24th-25th June 2008
Sharing Trajectory-Related Information
Data COM Infrastructure Predicted trajectory information
Flight Intent
AirbornePredicted Trajectory
TP PROCESS 2 (eg arrival manager)
Flight Intent
GroundPredicted Trajectory
Trajectory ComputationInfrastructure
(1)
Aircraft Intent
Intent Generation
Infrastructure(1)
Airborne TP
Trajectory ComputationInfrastructure
(2)
Aircraft Intent
Intent Generation
Infrastructure(2)
Ground TP
Aircraft Intent information
Flight Intent Information
Trajectory Prediction (eg flight management system)
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
9
REACT Workshop Seville Spain 24th-25th June 2008
The Aircraft Intent Description Language (AIDL)
bull Two levels in the language grammar lexical and syntactical
bull Lexical Level Instructions
ndash Instructions are atomic inputs to the Trajectory Engine that capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
bull Syntactical level Operations
ndash Operations are sets of compatible instructions that when simultaneously active univocally determine the ensuing aircraft motion
bull With a reduced set of instructions (AIDL alphabet) any possible aircraft operation can be formally specified in such a way that the ensuing aircraft motion is unambiguously determined
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
10
REACT Workshop Seville Spain 24th-25th June 2008
The REACT Project
Requirements Elicitation for an AIDL that supports Consistency across TPs
Aircraft Intent Description Language
bull Eliciting requirements for a language that can serve as a standard means for sharing aircraft intent information between TPs
ndash The language shall be independent of the
ndash Operational context and application served by the TPsndash Physical location of the TPsndash Communication means
Consortium
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
11
REACT Workshop Seville Spain 24th-25th June 2008
The Scope of REACT
Next generation FMS
AOC 2
ATFM DST
FMS
AOC 1
FDPS
AMAN DST
Next Generation
FDPS
Air-Air
Air-Ground
Ground-Ground
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
12
REACT Workshop Seville Spain 24th-25th June 2008
TRAJECTORY RELATED INFORMATION AIRCRAFT INTENT
Aircraft Intent Synchronisation in the future TBO without a standard AIDLhellip
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorI-5
TranslatorR-5
Translator2-K
TranslatorR-2
Translator2-5
TranslatorI-2
TranslatorH-5
TranslatorR-P
N (N-1) divide 2 TRANSLATORS
TranslatorK-P
Translator5-K
TranslatorI-R
Translator5-P
TranslatorL-5
TranslatorI-H
TranslatorH-L
TranslatorR-K
TranslatorL-P
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
13
REACT Workshop Seville Spain 24th-25th June 2008
TP2
TPI
TPP
TPR
TPK
TP5
TPL
TPH
TranslatorL-AIDL
AIDL
Translator5-AIDL
TranslatorP-AIDL
TranslatorK-AIDL
TranslatorR-AIDL
Translator2-AIDL
TranslatorH-AIDL
TranslatorI-AIDL
N TRANSLATORS
AIDL as a Standard supporting TP Synchronisation in the future TBO
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
14
REACT Workshop Seville Spain 24th-25th June 2008
REACT Approach
bull Elicitation process based on uncovering the commonalities existing between the ways in which different TPs model aircraft intent information
bull Superset of the aircraft intent information used by any two TPs that need to synchronise with each another
bull Use of the theoretical language structured as a reference to describe the requirements
bull The standard AIDL would include the aircraft intent description ldquodialectsrdquo used by the individual TPs which could map their aircraft intent model to a subset of the AIDL
bull Focus on information content and structure
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
15
REACT Workshop Seville Spain 24th-25th June 2008
REACT Contributors
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
16
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull Stakeholders will present their views on the Business Trajectory and on trajectory synchronisation in different contexts
bull Presentation of a set of preliminary AIDL requirementsbull Gather your inputs on the way forward through open debatebull Enjoy and engage
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
17
REACT Workshop Seville Spain 24th-25th June 2008
The Remainder of the Workshop
bull BACKUP SLIDES
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
18
REACT Workshop Seville Spain 24th-25th June 2008
What aircraft trajectory IS
bull The evolution of certain aspects of the aircraft motion (geometry kinematics and kinetics)
bull A time sequence of aircraft motion states (eg a sequence of 4D points)
bull The output of the trajectory computation process
Trajectory vs Aircraft Intent
What aircraft trajectory is NOT
bull A set of constrains that the aircraft motion must comply with (eg follow a specified CASMach speed schedule)
bull The specification of strategies to be implemented by the aircraft or objectives to be fulfilled by its motion (eg an RTA to be met)
What aircraft intent is NOT
bull A flight plan
bull A sequence of 4D waypoints with a set of constraints to comply with
bull ATC instructions
bull A predicted trajectory
What aircraft intent IS
bull An unambiguous description of how the aircraft is to be operated within a timeframe
bull An abstraction of the flight instructions issued by the PilotFMS to manage the aircraft behavior
bull The input to the trajectory computation process
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
19
REACT Workshop Seville Spain 24th-25th June 2008
Formalization of the Concept of Aircraft Intent
bull Instructions
- They capture basic commands and guidance modes at the disposal of the pilotFMS to direct the operation of the aircraft
- They can be seen as minimal indivisible pieces of information describing distinct manners of closing one of the aircraft motionrsquos degrees of freedom
- An instruction is characterized by a mathematical equation that is to be satisfied simultaneously with the equations of motion during a certain time interval denoted as the execution interval
bull Operations
- They represent an elemental aircraft behaviour that determines its motion unambiguously during a specific time interval denoted as the operation interval
- An operation is the result of a set of compatible instructions simultaneously active during the corresponding operation interval
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
20
REACT Workshop Seville Spain 24th-25th June 2008
AIDL Overview Elements
AIDL
Alphabet Grammar
Lateral Instructions
Vertical Instructions
Speed Instructions
Propulsive Instructions
Configuration Instructions
Lexical Rules
Syntactical Rules
Lateral Aircraft bearing
Law Constant
Value 175ordm Speed CAS
Law Constant
Value 280 Knots
Configuration Flaps
Law Constant
Value 15ordm
