ICEUM9 Sorrento Lunar Science and Infrastructure with the Future Lunar Lander Session 9: Next steps for Robotic Landers, Rovers and Outposts ICEUM9 Sorrento, Oct. 26, 2007 Hansjürgen Günther 26/10/2007 Page 1
Introduction Astrium Space Transportation have, sponsored by national agency DLR, performed a study on Lunar Applications and Technologies in the timeframe Nov. 2006 to Nov. 2007 Within this study, different lunar landing vehicles have been identified and analysed ranging from 0.15 to 1.5 tons payload mass on lunar surface Among those, the subject Future Lunar Lander proved to be of utmost interest for upcoming lunar scientific infrastructure, for robotic science missions and for sample return missions 26/10/2007 Page 2
Fields of Application Within the subject study, primary fields of interest/ application have been identified: Planetary Research/Geology Long Baseline Network Seismometers, Geophone Solar System Research Radiotelescope, X-Ray Spectrometer Astronomy Low Frequency Interferometer Radiotelescope, IR-Telescope Lunar Surface Research/Resource Utilisation In-situ Resource Utilisation, Sample Return Biology/Biomedicine Biolabs 26/10/2007 Page 3
Reference Missions Considering the foregoing, three reference missions have been idenified: Large Science Mission Robotic deployment of scientific infrastructure consisting of low frequency array on lunar far side (Lunar LOFAR), seismometers/geophones, thermal gradient sensors and surface analysis Technology Demonstration Mission Deployment of in-situ resource utilisation facility Sample Return Mission Robotic sample return of lunar surface samples 26/10/2007 Page 4
Ref. Mission 1: Scientific Infrastructure (1) ICEUM9 Sorrento Reference Mission1: Scientific Infrastructure on Lunar Far Side Low frequency radiotelescope, geoscience, planetology Earth Receiving station on Earth Daten link to Earth via laser (preferred) or Ka-band Laser link Moon Station on far side Data relais satellite Halo-Orbit about Lagrange-Point L 2 26/10/2007 Page 5
Ref. Mission 1: Scientific Infrastructure (2) ICEUM9 Sorrento Instrumentation D, G, T 15 m Kabel zum Lander Probenehmer und analysator (auf Rover) D, G, T P D D, T P D, T D 15,3 km D, T P D, G, T D Dipolmodul D, G Dipolmodul mit Geophon D, G, T Dipolmodul mit Geophon plus Temperaturgradientsonde P Probenahme und -analyse Dipole module with geophone 26/10/2007 Page 6
Ref. Mission 1: Scientific Infrastructure (3) ICEUM9 Sorrento Lander 26/10/2007 Page 7
Ref. Mission 2: ISRU Demonstration ICEUM9 Sorrento 26/10/2007 Page 8
Ascender module Lander 26/10/2007 Page 9 Ref. Mission 3: Sample Return Re-entry capsule
Lander Facts ICEUM9 Sorrento Mass Budget: Launch mass: 7800 kg LTO mass: 7600 kg Mass on lunar surface: 2900 kg Dry mass: 2800 kg Subsystem mass: 1300 kg Max. Payload on lunar surface: 1500 kg 26/10/2007 Page 10
Lander Facts Soft precision landing: Challenge to GNC, sensorics, propulsion, and operation Has been studied exaustively and can be mastered Terrestrial Lander Demonstrator would increase confidence in the technology N. B. Details on SPL in Presentation 26/10/2007 Page 11
Lander Subsystems (1) Propulsion: Soft precision landing strategy requires different thrust levels for different flight phases Ideal engine concept would utilize one throttable engine of 12 kn thrust with vector control, throttable down to 4 kn Compromised concept would utilize one throttable engine of 8 kn (throttable to 4 kn) without vector control plus 8 x 500 N engines No such engines are available on the market Consequence: use of 24 available EAM-engines (500 N) arranged in plug nozzle configuration, thrust modulation by switching of opposite pairs 26/10/2007 Page 12
Lander Subsystems (2) Propulsion: Plug nozzle concept allows for higher thrust and higher specific impulse 26/10/2007 Page 13
Lander Subsystems (3) Propulsion scheme: ACS thrusters 26/10/2007 Page 14 Plug nozzle
Lander Subsystems (4) Thermal protection of sensitive elements by RHU: Example: Huygens-capsule with RHUs US-Typ RHU, 26 mm ø x 32 mm, 1 W th, 40 grams 26/10/2007 Page 15
26/10/2007 Page 16 Lander Operation
Bye The Future Lunar Lander is the right European answer to the upcoming lunar exploration challenges. Thanks for your attention! 26/10/2007 Page 17