Presentation is loading. Please wait.

Presentation is loading. Please wait.

Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 NEO deflection mission studies: DON QUIJOTE MISSION Ian Carnelli ESA’s Advanced Concepts.

Similar presentations


Presentation on theme: "Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 NEO deflection mission studies: DON QUIJOTE MISSION Ian Carnelli ESA’s Advanced Concepts."— Presentation transcript:

1 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 NEO deflection mission studies: DON QUIJOTE MISSION Ian Carnelli ESA’s Advanced Concepts Team ESA ESTEC

2 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 NEO Mission Preparation at ESA  Motivation –Low impact probability but extremely severe effects –Very limited practical knowledge of the NEO threat and the best technology approach to tackle it –Council of Europe UN COPUOS OECD UK government task force ESA to take action and identify the potential role of space missions

3 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006  2000 – 2003 Early ESA scientific and system studies, 6 parallel mission feasibility studies (GSP):  July 2004 ESA's NEOMAP recommendations issued: priority prove our ability to modify the trajectory of a NEO focus on the "Don Quijote" mission concept  Dec Jun 2005 ESA's internal assessments at ESA/ESTEC's Concurrent Design Facility with JAXA participation.  March 2006 industrial phase-A mission studies kicked off. ESA NEO mission definition activities Simo ne Earthgu ard 1 Ner o Don Quijote Isht ar Eun eos

4 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Industrial teams Alcatel Alenia Space + QinetiQ (EP subsystem) + NGC aerospace (Impactor terminal navigation) + SCI consultants: IFSI, OATo, OdP, UdR, UoM, OCA EADS Astrium GmbH + Deimos (Mission analysis, RSE and Ops) + EADS Casa (thermal subsystem) + SCI consultants: UniPi, DLR, Spaceguard Foundation, … QinetiQ + Swedish Space Corporation (Orbiter design) + Verhaert Space (Impactor design) + SCI consultants: SciSys, Open University

5 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Objectives of the studies  Review the results of the ESA/CDF NEO2 study  Critically review mission requirements  Assess different design concepts and feasibility  Provide mission architecture & design of all elements  Use cost-effective approach  Identify development risks and critical technologies  Perform a cost analysis  Provide programmatic

6 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 KOPM1PM2PM3PM4MTRFP Study planning NOW

7 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Programmatic Design Drivers  “Cost-aware” approach 1.Re-use of existing components with TRL ≥ 6 2.Modular design + commonalities between Orbiter & Impactor 3.Emphasis on autonomous operations 4.Small class launchers baselined (Dnepr, Vega) Medium-class launchers (Soyuz) considered only when performances of small launchers deemed insufficient and if operational advantages exist.

8 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Mission objectives  “DQ light” – primary objectives: 1.Impact a give NEO 2.determine momentum transfer (Mass, size, density, CoM orbital parameters …)  “DQ+” – secondary objectives: all primary objectives + multi-spectral mapping + ASP-DeX + (optional) thermal & mechanical properties

9 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Main mission requirements System operations 2 s/c launched separately Impactor launched after Obiter successful rendezvous min. 2 months RSE campaigns before and after impact ASP-DeX to be carried out only at end-of-mission Impactor NEA CoG Δa ≥ 100 m K = 1 (no ejecta) Target visual acquisition 2 days before impact Autonomous optical navigation 2 days before impact Impact accuracy 50 m (3σ) from CoG

10 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Main mission requirements Orbiter Δa measurement accuracy 10 m Measure at least NEA mass, size, gravity field, shape Back-up data relay for Impactor’s GNC Observe impact from safe parking position 30 days autonomy during interplanetary cruise Autonomous navigation while orbiting ≥ 4 orbits Autonomous optical rendezvous when distance ≤ 100 km Technology TRL ≥ 5 by mid-2008 for Orbiter autonomy & Impactor GNC TRL ≥ 6 by mid-2007 for all other system elements

11 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Mission scenario  Flexibility: 1.Operational & programmatic: 2 separate missions for Orbiter and Impactor (possible different primes, evenly distributed funding effort) 2.Design: 2 different targets allow to have a robust design that can adapt to new scenarios (alternative targets) and large uncertainties in asteroid properties (phase-A only).

12 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Target selection (NEOMAP) Orbit characteristicsPreferred range Rendezvous ΔV< 7 km/s Orbit type and MOIDAmor and increasing MOID Orbit determination accuracyWell determined orbits Physical characteristicsPreferred range Size< 800 m diameter Density1.3 gm/cm 3 Absolute magnitude H ShapeNot irregularly shaped Taxonomic typeC-Type Rotation period6 – 20 h BinarityNot binary 2002AT ML

13 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Target selection 2002AT ML Size and Mass Smaller Less massive Larger More massive Orbit Larger semi-major axis High eccentricity Smaller semi-major axis Small eccentricity (within Mars orbit) Implications for Orbiter High ΔV to reach target Complex and lengthy transfer Smaller ΔV to reach target Easier and shorter transfer Implications for Impacter Harder to detect and target Easier to deflect Easier to detect and target Harder to deflect Sizing case for OrbiterSizing case for Impactor

14 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 System design  Commonalities between Orbiter and Impactor design identified on system, sub-system and component level  Different approaches in GNC and EP subsystem design  Alternative solutions:  Common Propulsion Module  Impactor-PM integrated approach  Common Orbiter-Impactor bus

15 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Strawman payload  Deflection measurement (mandatory): –Optical camera –Radio Science  Ancillary data (high priority) –Laser/Radar altimeter to speed dynamic model convergence and/or enhance measurement accuracy –Thermal IR spectrometer (Yarkowsky effect)  Scientific studies (+ NEO mitigation characterization) –NIR spectrometer for mineralogy, X-ray spectrometer –Dust analyzer/detector to interpret impact objective –Second camera –Magnetometer, Radiation monitor, in-situ characterization (ASP)

16 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Developing capabilities Autonomy  Orbiter: –30 day autonomy during interplanetary cruise –autonomous optical rendezvous < 100 km distance –close proximity operations (drift-bys, safe parking, orbit) –orbit around a small body for RSE  Impactor: –Impactor autonomous navigation 2 days before impact –Impactor final targeting architecture

17 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 Summary  Don Quijote is a deflection precursor mission  reduce technology risk if the approach was used on a real threat  Information obtained could be useful even in other type of deflection techniques (i.e. non-kinetic impact was)  In a particular case (resonant returns of small asteroids e.g. Apophis) DQ could: 1.remove any uncertainties on the orbit of the object and its orbital evolution (including Yarkowsky) 2.deflect the asteroid out of a keyhole  In-orbit technology demonstration: focus on-board autonomy for interplanetary spacecraft  Flight proven technology, except for vision-based Autonomous GNC  Historic mission - opportunity to enhance public support in space

18 Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006


Download ppt "Ian Carnelli – ESA-ESTECESA’s Don Quijote mission September 2006 NEO deflection mission studies: DON QUIJOTE MISSION Ian Carnelli ESA’s Advanced Concepts."

Similar presentations


Ads by Google