Tools implemented at CIC(Centre d’Ingénierie Concourante)

Jean-Luc Le GalPedro Rocha Lopes

Plateau d’Architecture des Systèmes OrbitauxCentre National d’Etudes Spatiales

Workshop Cubesat Etudiant9 & 10 Juin 2016

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SOMMAIRE

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The Concurrent Engineering Facility

Tools

The engineering satellite model

Description of the mission

CubeSat equipment catalogue

Conclusion

The process

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MissionDefinition

Review

Mission Advisory Group (user representatives,

customers…)

CNES team, partners, industry support …

Phase 2,3

Analysis, Compararison of scenarios, Optimisation and

Sélection

Phase 1

Identification of drivers (mission, program, technical) and

scenarios

SOMMAIRE

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The Concurrent Engineering Facility

Tools

The engineering satellite model

Description of the mission

CubeSat equipment catalogue

Conclusion

CIC approach :Establishment of a referential for the satellite budgets

Satellite modélisationMission description

Masse Centrage Inertie

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THERMIQUE

PROPULSION

TELECOMMUNICATIONS

SCAO

ENERGIE

ANALYSE MISSION

Bilan de Puissance

Bilan d’ErgolsSTRUCTURE

Configuration

INSTRUMENT

Bilan de liaisons

Technical reference based on standards

Standards :

ECSS-ETM-10-25A :

Engineering design modelCCSDS protocol

Integrated Design Model Orbit and attitude description

Editors :

Viewers :

IDM CIC CelestLab

IDM View VTS

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IDM-CIC : A structured and shared view of the satellite

Excel description of :

- equipements,

- sub-systems,

- payload,

- satellite,

- mission phases

to perform budgets :

- Mass Center and Inertia

- consumed power

- propellant

- …

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Geometric representation

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COG Inertia Matrix at Originx [mm] y [mm] z [mm] Ixx [kg.m²] Ixy [kg.m²] Ixz [kg.m²]

984.080 1322.7 88.4 136.3 4471.236 -71.430 -125.191

Mass

[kg]

36 36

▼

▼ PCDU

PCDU-1 Mode MACQ MDGS

10.5 8.3310.5 8.33

Margin 5% 0.525 0.4165

▼ SADM

SADM-1 Mode On On

3.92 3.923.92 3.92

Margin 5% 0.196 0.19614.42 12.2514.42 12.25

EL1_SS7_Power_max

Power

PowerPower

PowerPower

EL1_SS10_Power_nomEL1_SS10_Power_max

Developpements in progress (1/2)

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Management of assemblies : ability to buildor to import parametric assemblies withlocal coordinate systems and joints

Positionning of local coordinate systems in components / assemblies (attachmentpoints)

Topological operations with MCI calculation

Developpements in progress (2/2)

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Management of « layers » allowing management of « points of view »

Management of « categories » : types of equipements to standardization of properties

Import/Export STEP interface

…

SOMMAIRE

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The Concurrent Engineering Facility

Tools

The engineering satellite model

Description of the mission

CubeSat equipment catalogue

Conclusion

CIC exchange protocol :Solution based on the CCSDS standard

CIC Protocol Position and velocity data :

OEMFile

Attitude data :

AEMFile

Complementary data :(geometrical, thermal, electrical..)

MEM File

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VTS : Visualizationof mission phases

Mistigri_OEM.txt

Mistigri_AEM.txt

SatelliteConsumedPower_MEM.txt

AngleSunNormSA1_MEM.txt

Download VTS :http://logiciels.cnes.fr/VTS/fr/index.html

Configuration module

Time line

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Working axes

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SIMU-CIC module : Génération of ephemeris (position, attitude,…) from a description of a mission scenario (orbit, pointing)

IDM-View / VTS coupling : Visualization of flux (solar, albedo, terrestrial) and temperatures

Energetic budget module dedicated to preliminary studies at CIC :

Search the worst cases

DoD establishment

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The Concurrent Engineering Facility

Tools

The engineering satellite model

Description of the mission

CubeSat equipment catalogue

Conclusion

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The catalogue

A compilation of standard CubeSatcomponents (referenced on the web), organized by subsystem (STR, PWR, OBC, COM..).

Each component is represented by a 3D IDM model with mass and consummed power.

The electronic boards are representedin several configurations of stackconnectors, with possibility of modifying them easily.

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Implementation

Import components…

…. then positioning

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Budgets

MCI : complete models

Consummed power : satellite modes (stand-by, acquisition, maneuver…) to define

NB: technical data are based on information collected on Internet. It’s important to check the validity of these data with the manufacturer’s latest information.

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The Concurrent Engineering Facility

Tools

The engineering satellite model

Description of the mission

CubeSat equipment catalogue

Conclusion

CONCLUSION

Models developed with CIC applications allow to structure the project for :- Establish system budgets- Constitute a technical reference for engineering analyses

Used by industrial contractors these tools are :- Well suitable to the design of nano-satellites - And the approach is a trainer for students

Tools are available to Universities / Engineering Schools / Scientific Laboratories

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