artemis advanced rover technology for exploration on the moon using in situ utilization
DESCRIPTION
ARTEMIS Advanced Rover Technology for Exploration on the Moon using In Situ utilization. Jesse Hecht Sean Fierman Cedrick Ngalande. Storyboard. →. ↑. ↓. ↓. +. Assumptions. Lands remotely, un pressurized The motors we chose exist or can be built - PowerPoint PPT PresentationTRANSCRIPT
ARTEMISAdvanced
Rover Technology for
Exploration on theMoon using
InSitu 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 TOTAL 2000 lbs
Velocity 25 mph 40.225 km/h
Wheel Diam 4 ft
Velocity 36.67 ft/s
Rev per sec 0.5 rev/s
Ang. Vel 9.17 rad/s
Torque 1000 lb*ft 1355.75 N*m
Hp 75 per wheel
2-Dec-04 USC 2004 AME 557 Space Exploration Architecture
Power
Solar Panels
493 Watts sun angle @left horizon (beginning of race)
3259 Watts sun angle @ 12 degrees above horizon
4424 Watts sun angle @ directly overhead (6.5 days into race)
3259 Watts sun angle @ 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 + 1.5 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!!!!!!!!!!
1012 kg @ 1000 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 1 shift 2 shift 3 shift 4 shift 5 shift 6 shift 7 shift 8 shift 9 shift 10 shift 11
Sean 8 8 0 8 8 0 8 8 0 8 8
Jesse 8 0 8 8 0 8 8 0 8 8 0
Cedrick 0 8 8 0 8 8 0 8 8 0 8
4 days
2-Dec-04 USC 2004 AME 557 Space Exploration Architecture
How we will win
Traverse fast in Maria, slower in HighlandsSpeed (mph)
Time (hrs)
Distance (miles)
Distance (km)
Total Distance (km)
Day 1 25 24 600 965.6 965.6
Day 2 25 24 600 965.6 1931.2
Day 3 15 24 360 579.4 2510.6
Day 4 8 24 192 309.0 2819.6
Day 5 9 24 216 347.6 3167.2
Day 6 8 24 192 309.0 3476.2
Day 7 9 24 216 347.6 3823.8
Day 8 9 24 216 347.6 4171.4
Day 9 12 24 288 463.5 4634.9
Day 10 11 24 264 424.9 5059.8
Day 11 10 24 240 386.2 5446.0
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