prisma – a formation flying project on the launch pad
DESCRIPTION
PRISMA. PRISMA – A Formation Flying Project on the Launch Pad. Swedish Space Corporation Hans Hellman Staffan Persson Bengt Larsson. The background. FORMATION FLYING AND RENDEZVOUS TECHNOLOGY. Formation Flying typical application: Large apertures and antennas for science missions. - PowerPoint PPT PresentationTRANSCRIPT
IAC October 2009
PRISMA – A Formation Flying Project on the Launch Pad
PRISMA
Swedish Space CorporationHans Hellman
Staffan Persson Bengt Larsson
IAC October 2009
Formation Flying typical application:
Large apertures and antennas for science missions
Rendezvous technology typical application:
In Orbit Inspection & Servicing
FORMATION FLYING AND RENDEZVOUS TECHNOLOGY
The background
MISSION OBJECTIVES:
”Demonstrate manoeuvering techniques and sensor and motor technology for Formation Flying and Rendezvous”
IAC October 2009
Mango
150 kg
400 W
6 DOF control
120 m/s dV
The satellites
Ground link
Intersatellite link
Tango
40 kg
100 W
3 DOF ACS (magnetic)
”Payload”
GPS
FFRF
LEDs
”Payload”
GPS
FFRF
VBS cameras
IAC October 2009
• Shared launch on Dnepr
• Two S/C – Mango and Tango
– clamped during launch
• SSO orbit 700 km, dawn-dusk
• Sequence of experiments
– GNC manoeuvers
– Sensors
– Propulsion
• <1 year mission time
• Operations from SSC / Kiruna
Mission overview
IAC October 2009
The project prime partnersPrime, mission and system design
GNC and OBSW
AIV and Operations
GPS system and navigation SW
FFRF navigation instrument
Vision Based Sensor
HPGP motor system
MEMS microthruster system
IAC October 2009
PRIMAY OBJECTIVE 1Autonomous Formation Flying (GPS or FFRF)
•T-periodic orbits
•Orbit acquisition
•Fuel optimization
•Collision / evaporation
•avoidance
IAC October 2009
PRIMAY OBJECTIVE 2
Autonomous Rendezvous (VBS sensor)
•Target search/find
•Orbit alignment
•Autonomous RVD
•100 km to 10 m
IAC October 2009
PRIMAY OBJECTIVE 3Proximity Operations (VBS or GPS)
•Forced motion between hold points
•GPS or VBS
IAC October 2009
Three (!) Propulsion systems
Nominal propulsion:HydrazineSix 1N thrusters directed to COG
Experimental propulsion:
HPGPTwo 1N thrusters directed to COG
Experimental propulsion:
MEMS MicropropulsionTwo thrusters pods
IAC October 2009
The Software validationOnBoard S/W (SSC)
Power
Thermal
FailureDetectionRecovery
System
Basic S/WGNC S/W (SSC)
DLRNav S/W
DLRExp S/W
SSCExp S/W
CNES Exp S/W
Model-based development
Matlab / Simulink
S/W validation
Scenarios simulations
Operational procedures
MangoProcessorTM/TC
TangoProcessor
SATLAB Simulator
RAMSES
P/F Unit Simulators
Optional
Ground link
RAMSES network
CAN bus
CAN bus
Serial I/F
SATLAB Enviromnent
AUTOCODING
IAC October 2009
Hardware in the Loop testing
IAC October 2009
Hardware in the Loop testing
Tango
S/C
MangoS/C
ASERRTU(TM/TC)
PCDU
Core Board(TM/TC)ST/VBS
ASMMRTU(MM)
ASMMRTU(SS)
GRWRTU(ARS)
ASMMRTU(ACC)
Serial PUSIM
MM PUSIM
SS PUSIM
ARS PUSIM
ACC PUSIM
GPS
ASERRTU(FFRF)
SatSim
RAMSES
MAIN CAN Bus
RAMSES Network
ASMMRTU(MTQ)
GRWRTU(RW)
GPTRTU(HTH) HTH PUSIM
TM/TC FEE
Serial PUSIM
SASTA
RG
ET
CA
N B
us
MM PUSIM
SS PUSIM
ASERRTU(TM/TC)
ASMMRTU(MM)
ASMMRTU(SS)
ASMMRTU(MTQ)
GPS
ASERRTU(FFRF)
PCDUSerial PUSIM
ISL
Spirent 7000 GSS
RF
RF
IAC October 2009
Environmental test – Solar Sim + TVC
1:st time with two S/C simultaneously in Intespace chamber
IAC October 2009
Environmental test– Mass prop + Vib
Tango mounted in launch config
IAC October 2009
Environmental test – EMC
Test set-up with S/C separated 1 m
Simulatanous RF systems:
-TM/TC (two S-band)
-FFRF (two S-band
- ISL (one UHF)
- GPS (one L-band)
IAC October 2009
Shared launch on Dnepr
LAUNCH: JUNE 15, 14:42:16 UTC
IAC October 2009
PRISMA is first to demonstrate
• Autonomous Formation Flying• Autonomous RVD & Proximity Operations• New vision based rendezvous sensor• Test flight of FFRF position sensor• Green propellant propulsion• MEMS micropropulsion
…..paving way for coming multi-satellite missions…..
well, almost…