1 / 33

Crew Mobility for Lunar Surface Exploration

Crew Mobility for Lunar Surface Exploration. Dr. Rob Ambrose NASA-JSC May 2008. Topics for this Morning. Lunar Architecture Team Lunar Challenges Landing Sequences Rover Configurations Un-Pressurized Rovers Small Pressurized Rover Recent Work Chariot Prototype SPR Cabin Design.

naasir
Télécharger la présentation

Crew Mobility for Lunar Surface Exploration

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Crew Mobilityfor Lunar Surface Exploration Dr. Rob Ambrose NASA-JSC May 2008

  2. Topics for this Morning • Lunar Architecture Team • Lunar Challenges • Landing Sequences • Rover Configurations • Un-Pressurized Rovers • Small Pressurized Rover • Recent Work • Chariot Prototype • SPR Cabin Design

  3. Challenges of the Lunar Southpole The Good News Many interesting scientific sites. Peaks of “perpetual light”. Easier transportation access. Potentially moderate temperatures. Long term Earth communication. The Bad News Very rough terrain. Very complicated lighting. 3

  4. Lessons (Still Remembered) from Apollo • 1/6 G Driving Dynamics • Limited Apollo speed. • Beware of pitch mode oscillations. • Consider alternatives to seats? • Beware of passive suspension. • Beware of Dust. • Engine Ejecta • Not a problem for Apollo. • Descent / ascent engines will fire. • Vicinity will be “sand blasted”.

  5. Landing Simulation (JPL Radar Data)

  6. So What’s the Big Idea? Lunar Outpost Surface Systems (Conceptual) Integrated Cargo Pallet (ICP) ( Supports / scavenges from crewed landers ) 10 kW Arrays (net) ISRU Oxygen Production Plant Logistics Pantry Habitation Element Habitation Element Unpressurized Rover Small Pressurized Rover (SPR) 1969, Apollo 11 ATHLETE Mobility System (2) Common Airlock With Lander

  7. Core Hab & PSU RPLM#2& PSU TS3 Hold Opportunity MMPU RPLM#1& PSU OPS Plant & Tools OPS Plant & Tools 4 0 4 0 0 0 0 0 4 0 4 4 0 4 0 4 4 4 4 4 0 OTSE OTSE 180 0 0 0 180 0 30 7 28 125 14 0 180 0 0 180 0 180 0 180 0 CT DPLM DPLM DPLM DPLM SPR Core Hab & PSU RPLM#2 & PSU DPLM & PSU RPLM#1& PSU - Crew Size # SPR 1284 total surface days - Mission Duration # MCT Tri-ATHLETE x2 Tri-ATHLETE x2 CDK CMC CMC • Notes: • Unpressurized, Liquid, & Gas carriers not shown • Each Crewed Lander & Flight 1 has 500 kg of Science FY19 FY20 FY21 FY22 FY23 FY24 FY25 FY26 FY27 FY28 FY29 Multi Lander Sequence (Early Habitation)

  8. TS2 Hold Opportunity Core Hab & PSU RPLM#2& PSU MMPU RPLM#1& PSU OPS Plant & Tools OPS Plant & Tools 4 0 0 0 0 4 4 0 0 4 0 4 0 4 4 4 4 0 0 4 4 OTSE 0 180 0 14 0 180 0 180 0 0 0 0 14 180 7 180 180 0 30 0 90 CT DPLM DPLM DPLM DPLM Core Hab & PSU SPR RPLM#1 & PSU RPLM#2 & PSU DPLM & PSU - Crew Size # SPR 1235 total surface days - Mission Duration # MCT Tri-ATHLETE x2 Tri-ATHLETE x2 CCK CMC • Notes: • Unpressurized, Liquid, & Gas carriers not shown • Each Crewed Lander & Flight 1 has 500 kg of Science FY19 FY20 FY21 FY22 FY23 FY24 FY25 FY26 FY27 FY28 FY29 Multi Lander Sequence (Early Mobility)

  9. Extreme Mobility 9

  10. UPR Concept Cabin mounts on UPR Chassis Hatch for Docking with Habitat IV Transfer of crew Reduced dust in cabin. Expands habitat. Suit Port for EVA Fast egress. Reduces dust in cab. 10

  11. SPR Concept Cabin mounts on UPR Chassis Hatch for Docking with Habitat IV Transfer of crew Reduced dust in cabin. Expands habitat. Suit Port for EVA Fast egress. Reduces dust in cab. 11

  12. UPR Lander Packaging Packing with Habitat Modules Many Habitat options on central plane. Two UPR’s can pack on deck sides. UPR Deployment Crane or Davit deployment. With or without EVA help. 12

  13. UPR Folding Wheels Suspension Folding Bracket Design Benefits • Reduced Stow Volume • Produces Flat Stow Deck • Locks Suspension for Flight • Provides EVA Repair Point

  14. SPR & ATHLETE Lander Packaging ATHLETE on Lander ATHLETE legs folded for launch ATHLETE slides/walks off lander deck SPR on ATHLETE on Lander SPR packed with “belly” flat on ATHLETE frame. SPR stands up and drives off ATHLETE. 14

  15. SPR’s Directly on Lander Packaging Two SPR’s on Lander Various geometries are possible. Room is available for extra chassis SPR Deployment Crane or Davit deployment. With or without EVA help. 15

  16. A Layered Approach to Safety Enough Cartoons, Now For Some Real Robots……

  17. Chariot- NASA’s UPR Prototype • Primary Configurations • Un-Pressurized Rovers (In Testing) • Small Pressurized Rovers (In Design) • Technologies • Novel chassis kinematics • Active/Passive suspension • Upright crew accomodations • Chassis leveling • Small Pressurized Rover Ops • Technology Collaborations • EVA (Advanced Suits & Suitports) • Thermal Control • ISRU • Power • Surface Communications

  18. Redundant Kinematics 18

  19. High Speed Driving 19

  20. Active Suspension 20

  21. Crew Accommodations

  22. Night Driving 22

  23. Dozing 23

  24. Robotic Driving 24

  25. EVA Mounting and Dismounting 25

  26. SPR Design Work • Mobile Habitation • ATHLETE Based habitats can move between multiple landing sites. • Crew Mobility • Chariot based rovers with cabins expands crew range and safety. 26

  27. SPR Design Work 27

  28. SPR Design Work SPR Mass 2500 Kg Dry Cabin Mass 3000 Kg Cabin w/ Crew 4000 Kg with chassis Features ~10 cubic meters IV PLSS Based ECLSS Water wall radiation shield Water/Ice wall thermal mass Two suitports on aft bulkhead Extended range battery (100 kW-Hr) 28

  29. SPR Design Work 29

  30. SPR Design Work 30

  31. SPR Design Work 31

  32. SPR Design Work 32

  33. While NASA’s lunar program is starting with the best from Apollo, we are also challenging assumptions about crew mobility. Should there be two seats? Should they be side by side seats? Should there be seats? Should rovers steer “like a car”? Should rovers have 4 wheels? How active should active suspension be? What are the right control modes for lunar operations? Early prototypes of un pressurized and small pressurized rovers offer entirely new exploration techniques that will be relevant for future, long range planetary exploration.

More Related