PROBA 3 Pre-Development: A Coordinated UK Response: PROBA 3 Pre-Development: A Coordinated UK Response Based on consultations by EADS Astrium with:


FF : A Coordinated System Approach: FF : A Coordinated System Approach An FF mission design & implementation requires Prime/system level capabilities Specific FF architecture & functional design capabilities Specific FF technologies Top-level system understanding needed to define FF system architecture FF technology requirements Validation & verification approach EADS Astrium has system capability to lead FF mission design & development A high priority for us in UK, France & Germany


Towards an FF capability: Towards an FF capability Our proposal is: To carry out a group of Proba 3 development activities as an integrated FF project, resulting in Pre-development of a FF system Its verification and testing Enabled by this approach, we further propose an integrated test bed Allowing demonstration of system integration & verification techniques


Slide4: Design test bed to incorporate real technology elements… Real Time Spacecraft Simulators ISL Simulator Test Management Facility SpaceWire/ISL development Proba-3 Ground Test Bed -driven by specific requirements Formation Management Facility Real Time Spacecraft Simulators ISL Simulator Current ideas… Drawing on experience from BNSC ATS programme


Correlation of UK capabilities and PROBA-3 GSTP Plan (Step 1): Correlation of UK capabilities and PROBA-3 GSTP Plan (Step 1)


Proba 3 Step 1 and industrial interests: Proba 3 Step 1 and industrial interests Not exclusive, but indicative of interest in coordination


EADS Astrium capabilities: EADS Astrium capabilities


FF Management & Control:System Approach: FF Management & Control: System Approach A Formation Flying mission needs to be no more difficult to operate than a single spacecraft mission To achieve that ultimate simplicity demands a top-level system understanding Overall functional design of the mission system failure management deployment formation autonomy and resource management ground – space task apportionment


FF Management & Control:System Approach: FF Management & Control: System Approach BNSC studies: System Implementation of Formation Flying Technology Technology for Control and Operation of Constellations ESA studies: Smart-2 Phase A Darwin System Assessment Study Formation Flying Testbed Definition Astrium UK R&D: Planning techniques for high level formation commanding Design of non-Keplerian manoeuvres for formation flying


Formation Flying GNC: Formation Flying GNC Precision FF GNC requires an architecture with layers of real-time control At formation level (overall coordination, precision guidance, FDIR) At spacecraft level (control actuation, FDIR, collision avoidance) Efficient FF GNC design and verification requires new tools & techniques More advanced than for single-spacecraft AOCS Complex, coordinated mode switching Simultaneous attitude & translation control Complex multi-spacecraft simulations New control techniques such as Potential Functions


Slide11: The ICC and ICD studies for ESA have raised FF GNC design to TRL 3 ICD: Interferometer Constellation Deployment Astrium (UK) lead + SciSys, Astrium (F), GMV Complete deployment system from dispenser through to precision control acquisition GNC control laws developed for both attitude and translation Simulator developed, different scenarios, retuning capability ICC: Interferometer Constellation Control Astrium (F) lead + SciSys, Astrium (UK), GMV Astrium (UK) developed precision guidance algorithms, SciSys developed FDIR Baselined for use in Darwin System Assessment Formation level Spacecraft level


Distributed Processing Systems: Distributed Processing Systems FF will require a distributed processing architecture and trans-spacecraft networking BNSC support for distributed system architectures Improved Mission Autonomy & Robustness Astrium, Scisys, OU, Glasgow, Sussex Unionics Demonstrator Astrium, Scisys, SEA, Dundee


Slide13: Unionics demonstrator hardware used as a multi S/C simulator


UK Actuators, ISL & Metrology: UK Actuators, ISL & Metrology


Micro Propulsion: Micro Propulsion Inter-Satellite Links


Metrology: Metrology


Summary: Summary FF demands a coordinated systems approach driving technology requirements We envisage set of pre-development activities converging towards an integrated system test bed UK capabilities in FF have been supported through BNSC, ESA & company investment We believe there is: Strong coherence between UK industrial objectives and the objectives of Proba3 Step 1 activities Willingness of organisations to work in a coordinated way