CGS Support for ATV Development & Production EGSE Workshop February 2003
Johannes Rüting Astrium GmbH Laurent Le Querrec EADS-LV
CGS for ATV
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The ATV Vehicle
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Overview ATV Test Facilities
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Common S/W Architecture
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CGS extensions for the ATV Project
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Communication Protocols with Front-End Equipment
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Status of ATV Test Facilities
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Some Pictures from the Facilities
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CGS for ATV
© Astrium © EADS-LV
The ATV Vehicle The Automated Transfer Vehicle: ➾ 21 tonnes ➾ 10.3 metres long ➾ 4.5 metres in diameter ➾ spans 22 metres with its solar panels deployed. The ATV comprises 2 modules: ➾ The “ cargo carrier ” ➾ The service module, called the “ spacecraft ” The ATV is mounted on the Ariane 5 launcher using a cylindrical adapter called “ separation and distancing module ”.
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CGS for ATV
© Astrium © EADS-LV
The ATV Mission After the docking to the ISS, the 40 m3 pressurised module of the ATV delivers up to 7.2 tons of equipment, fuel, food, water and air for the Crew. With up to 4.7 tons of propellant , ATV raise the ISS altitude during Reboost manover 6 months later , the ATV is loaded with 6.5 tons of waste and leave the Station to fully burn up during a guided and controlled reentry.
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CGS for ATV
© Astrium © EADS-LV
Overview ATV Test Facilities The ATV Test Facilities are grouped by family and built in an incremental way around a common S/W kernel (CGS)
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Software Validation Facility
Functional Simulation Facility
Electrical Ground Support Equipment
SVF
FSF
EGSE
SVF-FAS 1
FSF-E
SVF-FAS 2
FSF-F
SVF-FAS 3
FSF-M
SVF-MSU
SVF-Q
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EGSE1
Interface Validation Facility
Simulator
IVF
ATVSIM
IVF-EPOS
PCE SIMULATOR
IVF-MOSCOW
S/C SIMULATOR
EGSE2 (phase E)
CGS for ATV
© Astrium © EADS-LV
The Software Validation Facilities (SVF)
" Integration & Test of on-board S/W on real target " Validation of algorithms for " GNC (Guidance, Navigation, Control) " MVM (Missions Vehicle Management) " FDIR (Failure, Detection, Isolation, Recovery) " MSU (Monitoring and Safety algorithms) " Validate the real-time closed-loop performance " Check the CPU load, sequence, 1553 and TM/TC links " Simulation of avionics equipment via EUROSIM model responses on the 1553 busses
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CGS for ATV
© Astrium © EADS-LV
The SVF Architecture FSDE 0110
FAS (exe + debug files)
AONIX tools • AdaTransfer • AdaProbe
TSUP
MTU
TF
SIMU IRIG-B LAN/IRIG-B
FTC-BTS
ALB-AS NT
FTC-TE Linux
Linux
Local MMI
Local MMI HP Analyser
Reflective memory
UIS
Local MMI
IPX
IPX
FTC-BTS (PC)
FTC-TE (PC)
VME/PCI bridge
1553
IPN
RS422
ALB DPU
FML
Transputer link
AVI
VME 4x ATV Buses
PUT 7
2x ISS Buses
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CGS for ATV
© Astrium © EADS-LV
The Functional Simulation Facility (FSF)
" Qualification of the on-board S/W on target computers " Check of electrical interfaces between H/W equipment and on-board S/W " Qualification end to end of Electrical chains (measurements, propulsion, thermal chains ...) " Check of correct system performance in representative operational scenarios " Simulation of environment und missing H/W equipment through EUROSIM models
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CGS for ATV
© Astrium © EADS-LV
The FSF Architecture FSDE
VME/PCI Bridge
SIMU TSUP
GNC VDM STOS
Reflective Memory
FEE LAN
IRIG-B
MTU
SADE TM/TC LOAD
EPS ACCA
GYRA GPS SIM TGM SS
TCU
AUX
PDE
UIS
1553
EPS-Source EPS-Load EPS-Sim
SGS-Sim EPS-Bat
2x ISS Buses
4x ATV Buses
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CGS for ATV
© Astrium © EADS-LV
The Interface Validation Facilities (IVF)
" Bilateral tests with the ISS, performed in Moscow, with the Russian service module " Rendez-Vous bilateral tests, at DLR, Oberpfaffenhofen, on the EPOS facility " Validation of the rendez-vous in final approach phase " Real-time closed-loop tests with real RdV sensors " The IVF configuration is a reduced FSF
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CGS for ATV
© Astrium © EADS-LV
The EGSE Facilities
" Flight System Integration and Qualification including launch support " The tests performed are: " Acoustic tests " Deployment of the solar panels " EMC tests " Compatibility test with the TDRS system " Overall System Test " The EGSE configuration is a reduced FSF without the simulator " Two set of EGSE are built-up in the ATV Project
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CGS for ATV
© Astrium © EADS-LV
The Spacecraft Simulators (SCSIM)
" Electrical interface verification of the Russian equipment embedded inside ATV " Simulates the ATV avionics that are connected to the Russian Units. " The SCSIM configuration comprises: # # # # #
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Test Supervisor (TSUP) - CGS based 1553 Front End Equipment Power Front End Equipment UIS Front End Equipment ( hardwire links ) Load Simulation (IAPIS) simulating the ATV load for the ISS power delivery.
11./12. February 2003
CGS for ATV
© Astrium © EADS-LV
ATV Ground Facilities Overview SSDE Simulation S/W Development Environment
S/W Models
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Simulation Software
GSDE
FSDE
Ground Software Development Environment
Interface Interface Validation Interface Validation Facility Validation Facility Facility SC Simulator SC Simulator SC Simulator
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Electrical Electrical Ground Support Ground Support Equipment Equipment
Qualified Flight S/W
CGS CGS CGS
Simulation S/W
CGS
EGSE EGSE
IVF/SCSIM
Flight Software Flight Software Flight S/W Development Development Environment Environment Missionaizing Mission DATA DATA
SVF Software Software Validation Software Validation Facility Validation Facility Facility
CGS CGS
S/W Models
Flight S/W
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CGS CGS CGS
FSF
ATV TR
ATV-CC
Functional Simulation Facility
ATV Trainer Facility
ATV Control Center
CGS
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S/W Models for Training
CGS
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S/W Models for Operational Support Data Import
Master Mission Database (MMDB) as central Engineering Knowledge Repository: - Flight SW - System Description / Expert - Diagnosis know-how - Telemetry / Telecommand Data Definitions
- SW Models - Simulation Software - Automated Procedures - Display Definitions
* The exchange of Flight SW and SW Models depicted above is done through the MMDB 13
11./12. February 2003
CGS for ATV
© Astrium © EADS-LV
Common S/W Architecture ATV Test Facilities
PUT RF SFEE / TM/TC SFEE
MILBUS 1553 SFEE
SFEE #1
SFFE #n
EUROSIM
FEE LAN IRIG-B
MTU
Test Node #1
Test Node #2
Test Node #n
Work Station #2
Work Station #n
TSUP LAN
Master Mission Data Base Work Station #1 14
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CGS for ATV
© Astrium © EADS-LV
CGS extensions for the ATV Test Facilities The common CGS S/W version used for all ATV Test Facilities is S/W Version V5. This CGS version is based on the proven Columbus version V4.5, with the following main updates: " " " " " "
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S/W upgrade to Ada95 using GNAT compiler Implementation of PUS Standard (ATV) Access to database end items via nicknames Database input and update via MDB EXCEL Tool to manage “bulk data” Increased resolution of time (in particular for FEECP protocol to satisfy FSF needs) Handling of TC authorization, pre-conditions and execution verification
11./12. February 2003
CGS for ATV
© Astrium © EADS-LV
Communication protocols with Front End Equipment Three types of communication protocols have been used to connect with the various Front End Equipments: "
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FEECP: Front End Communication Protocol The standard communication protocol already used in the Columbus Project; suitable for response time not more than 100msec RPC: Remote Procedure Calls Used for FEEs, where this protocol was already implemented Proprietary message based protocols
The underlying communication interface H/W is: TCP/IP, RS422, IEE488, reflective memory or a PCI/VME bridge
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CGS for ATV
© Astrium © EADS-LV
Status of ATV Test Facilities " " "
Most of the ATV Test Facilities have been delivered and installed (at Les Mureaux, Moscow) and the usage has been started Integration of EGSE in Bremen started The feedback received from the SVF and FSF users in Les Mureaux:
It took us quite an effort to understand the complexity of the system in the beginning, but after that, we got a very powerful and helpful system.
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CGS for ATV
© Astrium © EADS-LV
H/W Layout of FSF Kernel Fan
Fan Cisco Switch
Spare
Catalyst 2950
MSU Signal Conditioning
MTU
DB Server Disks
Datum TymServe
2 x 2 SCSI Disks (32 GB)
3 x IRIG-B Distr. Datum RF Distribution
DB Server SunFire 280R
Local Controller PC / LINUX
Test Node #1 SunFire 280R
Local Console Test Node #2
TFT/KBD in Drawer
SunFire 280R
MIL 1553 SFEE
Test Node #3
3x2 Mil Bus 1553
SunFire 280R
Simulator
Drawer
2 x SGI O200
Power
Power
Distribution & Protection
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Distribution & Protection CGS for ATV
© Astrium © EADS-LV
Synoptic Display Example
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CGS for ATV
© Astrium © EADS-LV
Synoptic Display Example
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CGS for ATV
© Astrium © EADS-LV
FSF Control Workstations in Les Mureaux
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CGS for ATV
© Astrium © EADS-LV
FSF: Equipped Avionics Bay & FEEs
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CGS for ATV
© Astrium © EADS-LV
FSF: Inside view of the EAB
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CGS for ATV
© Astrium © EADS-LV
Backup Charts
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CGS for ATV
© Astrium © EADS-LV
ATV User Feedback: CGS Good Points "
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The system-wide coherence provided by the MDB mechanism. The Synoptic displays ; providing low cost MMI. The powerful command-line interface allowing to reach easily, any acquired data or to trigger any command. The unified description of all kind of signals (TMTC, bus, wire) The central timing capability allowing to compare the events across the whole facility.
11./12. February 2003
CGS for ATV
© Astrium © EADS-LV
ATV User Feedback: CGS Negative Points "
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A poor ergonomic MMI for preparation and analysis tasks. The reduced capabilities of post-analysis tool. A rather specific logic for data organisation resulting in : #
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Restrictions in data handling (moving a sub-tree within the MDB requires a significant effort). The long “scoe file generation” process before each execution. A “one facility” design which implies a lot of data distributions and deliveries on the many ATV facilities.
11./12. February 2003
CGS for ATV
© Astrium © EADS-LV
