ARTEMIS Advanced Rover Technology for Exploration on the Moon using In Situ utilization Jesse Hecht Sean Fierman Cedrick Ngalande

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Storyboard → ↓ ↑ ↓ +

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Assumptions  Lands remotely, un pressurized  The motors we chose exist or can be built  EVA / entrance / exit and navigation issues are not our problems

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Approach

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Rover Design  Total Size 14 x 6 x 6 ft (4.3 x 1.8 x 1.8 m)  4 ft diameter wheels (1.2m)  Living space, pressurized volume 6.5 x 6 x 6 ft (234ft^3, 6.48m^3) Chrysler Minivan is roughly 161ft^3 interior  Low Center of Gravity  Ground clearance – 2.5 ft (0.76m)  Break over angle – 31 degrees  Door area with 3 access points, 2 ladders  Arm  Lights by cameras for night vision  Weight – 1 ton – less than requirement

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Speed  1 mph needs 3 hp  25 mph needs 75 hp Engine per wheel (instantaneous, no gears, high estimate) Weight TOTAL2000lbs Velocity25mph40.225km/h Wheel Diam4ft Velocity36.67ft/s Rev per sec0.5rev/s Ang. Vel9.17rad/s Torque1000lb*ft N*m Hp75per wheel

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Power  Solar Panels 493Wattssun horizon (beginning of race) 3259Wattssun 12 degrees above horizon 4424Wattssun directly overhead (6.5 days into race) 3259Wattssun sun setting (13 days into race)

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Power  Fuel Cells Space Shuttle 14kW, 66ft^3 (0.155m^3), 200lbs (91kg) + 100lbs (50kg) of oxygen and hydrogen per day (cryogenic) operates for 2600 hours ARTEMIS – 7kW, 33ft^3, 100lbs + MgH2 and oxygen weight

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture SPECIALS  Dust Wheel design  Regolith shielding (radiation) 2 inch Al feet of regolith + fuel cell materials  Piloting with no windows! LCD screens with picture in picture (PIP)

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Lunar Wheels

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Apollo Rover  Outer & inner frame  Wire mesh  Titanium

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Rooster Tails  Push dirt outward NOT Upward

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Turbine or Impeller Channels  Used to move all types of materials

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Channels – Remove Dirt

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Wheel Cross-Sections

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Gravity, Centrifugal Force & Blades

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture No More Upward Rooster Tails  Main Interface with Lunar surface = Wheels  Minimize dirt uplift from wheels

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Radiation

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Radiation  Rover shell is 2” of aluminum  Partial In-Situ shield (1ft – 1.5 ft thickness)  Flexible bladders (Internal & External)  Fuel Cells

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Dose

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Problems  Coronal Mass Ejection Majority is protons Fequency varies with sunspot cycle  Solar min = 1 CME week  Solar Max = 2 to 3 PER DAY!!!!!!!!!! km/s

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture EVA  Pressurized and un pressurized sections  Entrance / exit built into structure  Ladders for side access

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Way Stations  Arrive next to Way Station  Use robotic arm for all supplies Arm places materials through top  No EVA

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture Sight  LCD monitors & cameras for piloting Use HDTV cameras and signal Located all around interior Main screen in front Screens act like windows for pilot Night lights by cameras

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture How we will win  Minimize complications  Wheel size allows us to overcome most obstacles  Wheel base / spacing similar to HUMMER  We can run at night  Use of way stations

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture How we will win  We drive constantly rotation cycle crew of 3 shift 1shift 2shift 3shift 4shift 5shift 6shift 7shift 8shift 9shift 10shift 11 Sean Jesse Cedrick days

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture How we will win  Traverse fast in Maria, slower in Highlands Speed (mph) Time (hrs) Distance (miles) Distance (km) Total Distance (km) Day Day Day Day Day Day Day Day Day Day Day Finish race

2-Dec-04 USC 2004 AME 557 Space Exploration Architecture How we will win  REUSEABLE ROVER!!! Hybrid power day/night use Towing capability Dust