Nextgen Aircraft Performance

8/3/2019 Nextgen Aircraft Performance

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1NEXTOR/Virginia Tech - Air Transportation Systems Lab 1

Dr. Antonio A. Trani

Associate Professor of Civil Engineering

Virginia Polytechnic Institute and State University

Jan. 9-11, 2008

Falls Church, Virginia

Analysis of Air Transportation SystemsAnalysis of Air Transportation Systems

Aircraft Performance Capabilities and theirAircraft Performance Capabilities and their

Relationship withRelationship withNextGenNextGen


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2NEXTOR/Virginia Tech - Air Transportation Systems Lab

Aircraft Performance/Equipage and NextGen

Aircraft capabilities are intrinsically related to NextGen

For example, aircraft equipage is an important issue indeploying various NextGen technologies such as:

ADS-B

WAAS Datalink

SWIM

In a network centric system the aircraft becomes a more

relevant player in NextGen (a node of in a more intelligentnetwork)


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Altitude

Downrange Distance

Transition Altitude

ConventionalCDA ProfileCDA Profile

Runway

TOD Point

Sequencing

Descent to RunwayDescent from Cruise

FAF

In-trail Delivery Error

(near runway)In-trail Delivery Error

(sequencing area)

!o - RWY!o - TOD

Example Capability Required in NextGen (Continuous

Descent Approaches)

In-trail delivery errorsFuel burn

ATC Workload

(reduction in messages)

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Observation of Terminal Area Descent

Profiles and Patterns

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Runway

PDARS Data


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Trajectory Based Operations Require Advanced

Avionics On-Board the Aircraft

Improvement in efficiency, capacity, and workload

distribution

Trajectory negotiation via Data link/TMA and ADS-B

allows more precise delivery, efficient flight paths, and

lower controller workload

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Trajectory Based Operations in NextGen

Continuous Descend Approaches (CDA) and tailored arrivals

could be commonplace in NextGen

ADS-B

SecondaryRadar Flight Data

ProcessingSystem

TailoredArrival

Controller

Datalink(CPDLC)

ADS-C

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Emerging AircraftEmerging Aircraft


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Very Lights Jets

General purpose category of jet-powered aircraft weighting less than 10,000

lbs

Flying Aircraft

Cessna Mustang (Certified 2006)

Eclipse Aviation 500 (Certified 2006)

Adam 700 (2008)

Aircraft in development Embraer Phenom 100 (2008)

Diamond Jet (2009)

Honda Jet (2009)

Eclipse 500Eclipse 500

Cessna MustangCessna MustangAdam 700 (source Adam Aircraft)Adam 700 (source Adam Aircraft)


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Typical Very Light Jet Performance

Generic VLJ vehicle

Pressurized aircraft

All weather vehicle

Four revenue seats

360 mph cruise speed

Certified to fly into known icing conditions

700 nm practical with 2 passengers (4 seats total + 2 pilots)

1.5-3.0 million dollars

Public airports with effective runway length of 3,000 ft (correctedfor elevation)

Low Landing Minima capability provided to all airports Airport Design Group = A-I

Wake Vortex Classification = Small


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Projected Performance of VLJs

is Similar to that of Existing Light Jets

Shared Airspace with Airliners

Expected StageLength of VLJ flights


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Emerging Aircraft

Knowing the performance of emerging aircraft

technologies allows us to understand the impact of newvehicles in NextGen

NextGen needs to be flexible to accommodate all types of

aircraft in the future

VLJs Boeing 787-8

NASA Concept

For Tiltrotor (RIA)

Airbus A380

Sources: NASA, Boeing and Airbus web sitesSources: NASA, Boeing and Airbus web sites


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New Aircraft Add New Capabilities and Impacts

to NextGen Accelerates the replacement of older-technology aircraft

to meet social and environmental needs

Effect on ticket cost and airline profits

Ability to fly thinner long-range routes

Boeing 787-8Boeing 787-8 Airbus A350 XWBAirbus A350 XWB

Sources: Boeing and Airbus web sitesSources: Boeing and Airbus web sites


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Aircraft Technology Effects

Aircraft aerodynamics and engine technology yield

changes in payload-range capabilities

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177 passengers177 passengers

189 passengers189 passengers

MiamiMiami SeattleSeattle


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(Aircaft Replacement)

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Boeing 737-900ER

209 lb/passenger in a 2,367 nm route (e.g., Miami Seattle)

Boeing 757-200 272 lb/passenger in a 2,367 nm route (e.g., Miami -

Seattle)

23% fuel savings per passenger

Boeing 737-900ERBoeing 737-900ER

Boeing 757-200Boeing 757-200


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New routes can be opened with more capable and efficientaircraft

New aircraft markets are possible by-passing traditional

international hubs (JFK and MIA)

New class vehicles allow West Coast to Europe flights(Boeing 787-8 and Airbus A350 XWB)

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Boeing 787-8Boeing 787-8 Airbus A350 XWBAirbus A350 XWB

Sources: Boeing and Airbus web sitesSources: Boeing and Airbus web sites


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Dr. Antonio A. Trani

Associate Professor of Civil Engineering

Virginia Polytechnic Institute and State University

Jan. 9-11, 2008

Falls Church, Virginia


Evolution of Airlines Markets andEvolution of Airlines Markets and

Aircraft FleetsAircraft Fleets


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Regional Aircraft Evolution


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1,170 daily flights typical

Regional Jet Market Network (Year 2000)

Source: FAA ETMS data


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8,890 daily flights (typical)

Regional Jet Market Network (Year 2006)

Source: FAA ETMS data


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Comparison of Regional Jet Performance and

Turboprops they Replaced

13,200 ft.28,400 ft.Typical Cruise

Altitude (ETMS)

320 mph520 mphCruise Speed

31,000 ft.37,000 ft.Service Ceiling

4,100 ft.5,650 ftTakeoff Distance

(MTOW) sea level

Saab 340Embraer 135Attribute

Significant changes in runway performance: impacts airport operations


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Understanding the NAS and NextGen requires a goodknowledge of the vehicles operating in the system

Aircraft performance capabilities are key to the success of

NextGen

Final Remarks

Airbus A350 XWBAirbus A350 XWBSource: AirbusSource: Airbus

Documents

Nextgen Aircraft Performance