Transcript SGEO – SSC/OHB CCN discussion

designing, testing, launching and operating
air and space systems
19 October 2010
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Small GEO
A unique small telecom satellite with major
Swedish contributions
Flygteknik 2010 - 19 October 2010
Mats Rieschel
[email protected]
Contents
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19 October 2010
Programme
Industrial set-up
Schedule
SGEO Overview
SSC contributions
Swedish participation
Future missions
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Programme
• ESA Programme – ARTES-11
• Objective:
To develop a European cost-effective platform to address
the segment of small telecommunications satellites in
geostationary orbit of less than 300 kg of payload mass,
3 kW of payload power and a lifetime of up to 15 years.
To develop and launch a small satellite allowing in-orbit
validation of the platform and associated new
technologies.
• 3 Sub-elements
– Platform
– First mission – Hispasat Advanced Generation 1 (AG1)
– Product Line development
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Industrial consortium
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Schedule
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Phase C/D started in 2008
PFM Accommodation Freeze this week
STM & EM campaign to start early 2011
Platform & Mission CDR – July 2011
QAR-1 (Platform ready) – April 2012
QAR-2 (Satellite ready) – April 2013
Launch – June 2013
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SGEO Overview
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P/L configuration: 300 kg/3 kW
Platform design for several
launcher possibilities, including
secondary passenger
ITAR-free
Platform flexible and modular to
accommodate future users
Establish qualification heritage for
all components
GTO with Apogee Engine Module
in first mission
Direct Injection with EP only
supported in platform design
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SSC contributions
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AOCS
– Procurement of AOCS Sensors and Actuator
• Gyro (Honeywell/SAGEM)
• Reaction Wheels (Rockwell Collins Deutschland)
• Star Tracker (Jena Optronics)
• Sun Sensors (Bradford Engineering/TNO)
– Development of AOCS Software
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EPPS
– Procurement of EP components
• EP Thrusters (Snecma/ETCA)
• Propellant Thruster Assembly (IberEspacio/CRISA)
• Xenon Tanks (MT Aeronautics)
• Cold Gas Thruster Assembly (TAS-I)
– EPPS Tubing
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Mission Analysis
– Perform all Mission Analysis activities related to all AOCS and EPPS operations.
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SSC Contributions - AOCS
Star Tracker
Reaction Wheel
(Rockwell Collins Deutschland)
Sun Sensor
(Jena-Optronik)
(Bradford Engineering)
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SSC Contributions – AOCS S/W
• Major element of Satellite S/W. Includes FDIR functionality
• Agile S/W development methodology used, together with Test-driven
design
• Software split up in scenarios, based on experience from Prisma
and Smart-1
• Each scenario adds functionality to AOC Core S/W
• Incremental delivery provided to OHB for system-level integration
• S/W tested on SSC-developed simulators
• S/W validated on system-level simulator provided by OHB
• Independent S/W validation included in programme scope
• S/W developed in Matlab and Simulink
• Auto generated C-code provided as flight S/W
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SSC Contributions - EPPS
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Continue the heritage from SMART-1
Implement full EP system
EP-only for all station-keeping manoeuvres
Flight demonstration of new EP Thruster technology
– HEMPT – High Efficiency Multi Stage Plasma Thruster
– First mission will have 4 Hall Effect Thrusters (HET) as well
• SPT-100 thrusters from Fakel
– HEMPT development not completed on time –> 4 additional HET
• EPPS Titanium Tubing
• Sputtering Analysis
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SGEO EPPS architecture
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EP Thruster Bracket
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Xenon Tank Assembly
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SGEO equipped with two Xenon
Tanks
Each tank is 60 litres, holding 110
kg of Xenon at 186 bar MEOP
Equipped with dual ports to allow
efficient xenon loading
Xenon Loading Cart procured by
SSC to enable loading of tanks
prior to shipment to launch site.
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SSC Contributions – EP Tubing
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SSC Contribution – Mission Analysis
• Define the EP Flight Operations Plan
• Station Keeping with collocation strategy
• Optimum Station Keeping scenario must be established to minimize
propellant consumption during 15 years lifetime, including control of
inclination and longitudinal drift together with angular momentum
• Collocation Strategy
– First mission to be collocated with 4 existing satellites with CP
only.
– Challenge to demonstrate how to enter and maintain position
– Substantial simulations necessary to demonstrate behaviour at
possible failure of EP thrusters
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Swedish contributions - SMU
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The Satellite Management Unit (SMU)
is provided by RUAG Space AB in
Göteborg.
Provides all the typical satellite
functionalities, including dedicated
interfaces for AOCS and propulsion
systems.
Fully redundant
Processing is handled by a LEON2
processor (SPARC V8) providing up to
45 MIPS, 6 Mbytes EDAC protected
SRAM and 4Mbytes EEPROM. The
Mass memory has a storage capacity
of 2 x 4 Gbit.
Breadboard and EQM delivered.
Testing of flight will start end 2010.
RUAG Space AB also provides Kuband and Ka-band converters.
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The Central Tube is provided by
RUAG Space AB – Linköping
55 kg, almost 3 meters long and
1.2 meters in diameter
Sandwich structure made of
Carbon Fibre Reinforced Plastic
with an aluminium core.
Complex manufacturing process,
requiring precision and care,
controlled by x-ray and airborne
ultrasonic.
Almost all development tests are
completed, and the manufacturing
of the structural and thermal
model for the Small GEO central
tube will be completed shortly.
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(RUAG Space AB - Linköping)
Swedish contributions – Central tube
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Future missions for SGEO
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European Data Relay Satellite – EDRS
– ARTES-7 programme
– Data relay for LEO satellites – Sentinel/GMES
– ITT for phase C/D/E issued to potential EDRS operators
– Dedicated satellite to be based on SGEO platform
– CP only – AOCS S/W to be updated
Heinrich Hertz
– German national program
– Objective: Technology verification and qualification of various innovative
technologies over an operation time of 15 years in the geostationary
orbit.
Meteosat Third Generation
– Platform based on SGEO
Commercial Customers
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Technical support
SSC
AOCS – Anders Mörtsell – [email protected]
AOCS S/W – Camille Chasset – [email protected]
EPPS – Alain Demairé – [email protected]
Mission Analysis – Anders Edfors – [email protected]
RUAG
DHS – Peter Sindander – [email protected]
Central Tube – Isabelle Darmanin – [email protected]
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Conclusions
• SSC heavily involved in the development of a
new European satellite platform
• Partnership with OHB, 3rd Prime in Europe.
Opens up possibilities for additional cooperation
outside the SGEO frame
• SGEO part of the core business at the Space
Division of SSC
• SGEO should be a significant part of Swedish
space industry in the years 2020-2040
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Excuse me Sir, I wonder…
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