OVERVIEW ON 2012 SPACE DEBRIS ACTIVITIES IN FRANCE

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Transcription:

OVERVIEW ON 2012 SPACE DEBRIS ACTIVITIES IN FRANCE F.ALBY IAA-Beijing 21 September 2013 IAA-Beijing-21 September 2013 1

End of life operations CONT TENT T Collision risk monitoring Atmospheric reentries predictions R/D studies Regulatory activities National Register of Space Objects Workshops and meetings IAA-Beijing-21 September 2013 2

END OF LIFE OPERATIONS LOW EARTH ORBIT: Helios 1A (18 February 2012) Remaining orbital lifetime about 18 years GEOSTATIONARY ORBIT: EUTELSAT 4A (23 February 2012) Graveyard orbit 500 km above GEO Telecom 2D (18 November 2012) Graveyard y orbit 450 km above GEO compliance with French law and international recommendations IAA-Beijing-21 September 2013 3

COLLISION RISK MONITORING Corot Hélios 1a Jason 2 Picard Calipso Pléiades 1 Spot 4 Hélios 2a Spot 5 Hélios 2b Jason 1 Parasol Smos Operational service called CAESAR (Conjunction Analysis and Evaluation, Assessment and Recommendations) Analysis of all CSMs available corresponding to a conjunction Risk evaluation and avoidance recommendations Use of tracking radars or telescopes when necessary Open to: Satellites controlled by CNES External customers (AstroTerra-Spot 6 for the time being) Additional customers expected in 2013 IAA-Beijing-21 September 2013 4 Elisa (4)

ATMOSPHERIC REENTRIES MONITORING Objects monitored: «French» objects that could fall on foreign countries (Launching State responsibility) -satellites and launcher stages registered by France -launcher stages registered by ESA «foreign» objects that could fall on the national territory: Potentially dangerous objects registered by other countries: -Mass > 5T -dangerous materials Particular cases: IADC or governmental requests «debris» objects not considered 5 IAA-Beijing-21 September 2013

SPACE DEBRIS R/D ACTIVITIES ON-ORBIT SITUATION: Debris observation from space and ground Catalog management PROTECTION: Effect of debris impacts on satellites, protection Aero-thermodynamics models for reentry MITIGATION: Electric and fluidic passivation Reentry survivability REMEDIATION: Long term evolution of the space debris population Optimal p orbital transfer for active debris removal missions IAA-Beijing-21 September 2013 6

REGULATORY ACTIVITIES French Space Act applicable since December 2010 Technical compliance is checked by CNES before launch or critical operations Methods and tools are developed and proposed to support the implementation of the Technical Regulations: Fragmentation modeling during reentry: DEBRISK Estimation of ground risk in case of reentry: ELECTRA Determination of compliance with the 25-year rule: STELA Long term stability of the GEO graveyard orbit Collision risk during launch phase: ARCL IAA-Beijing-21 September 2013 7

NATIONAL REGISTER OF SPACE OBJECTS 305 space objects, end 2012, in the French Register - 191 launcher elements (LEO, MEO, GTO) - 114 satellites: operational satellites: 63 LEO : 35 GEO: 28 inactive satellites: 51 LEO : 24 GEO: 23 GTO: 4 IAA-Beijing-21 September 2013 8

MEETINGS AND WORKSHOPS annual national meeting on space debris: Space Debris Synthesis Group 27 June 2013, CNES Toulouse 80 participants: Administrations, Defence, Industry, Operators, Research, Insurance companies, Objective: to inform all partners about national space debris activities and international discussions (IADC, COPUOS, ISO) 5th satellites end of life workshop: 28 January 2014, CNES HQ, Paris Participants: industry, operators, space agencies Objectives:» To inform operators and industry on regulatory issues and evolution» To get feed-back from operators/industry in implementing the guidelines IAA-Beijing-21 September 2013 9

MEETINGS AND WORKSHOPS 3rd European workshop on Space Debris Remediation: 16-18 June 2014, CNES HQ, Paris Participants: industry, academics, laboratories, space agencies Programme Committee: CNES, DLR, ESA-HQ, ESOC To be contacted soon: NASA, JAXA, Roscosmos Objectives:» Follow-up of workshops held in 2010 and 2012» More general than previous ADR thematics IAA-Beijing-21 September 2013 10

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