Wheels used on the Moon
The missions for these vehicles were completely different, and accordingly they had dissimilar wheel designs. On Apollo 15 the LRV was driven a total of 27.8 km in 3 hours, 2 minutes of driving time. Power was provided by two 36-volt silver-zinc potassium hydroxide non-rechargeable batteries with a capacity of 121 amp-hr. A T-shaped hand controller situated between the two seats controlled the four drive motors, two steering motors and brakes. Cabling, pins, and tripods would then be removed and the seats and footrests raised. >> Moving the stick forward powered the LRV forward, left and right turned the vehicle left or right, pulling backwards activated the brakes. A large mesh dish antenna was mounted on a mast on the front center of the rover. << Harrison Schmitt of Apollo 17 said, "....the Lunar Rover proved to be the reliable, safe and flexible lunar exploration vehicle we expected it to be.
; Size 52.5 centimeters (20.7-inches) in diameter The longest traverse was 11.6 km and the LRV reached a distance of 4.5 km from the LM. 2 0 obj Three LRVs were driven on the Moon, one on Apollo 15 by astronauts David Scott and Jim Irwin, one on Apollo 16 by John Young and Charles Duke, and one on Apollo 17 by Gene Cernan and Harrison Schmitt. The image at right shows an earlier version of the planned deployment which does not exactly match the final sequence, note for example that the rover is facing away from the LM after deployment. %���� After switching on all the electronics the vehicle was ready to back away from the LM. Materials Made of aluminum, with cleats for traction and curved titanium spokes for springy support. >> The longest traverse was 20.1 km and the greatest range from the LM was 7.6 km. /Order [] /CreationDate (D:20091208081838-05'00') /Metadata 3 0 R An armrest was mounted between the seats, and each seat had adjustable footrests and a velcro seatbelt. endobj The wheels consisted of a spun aluminum hub and an 81.8 cm diameter, 23 cm wide tire made of zinc coated woven 0.083 cm diameter steel strands attached to the rim and discs of formed aluminum. /Type /Catalog /Author (lpukach) The longest single traverse was 12.5 km and the maximum range from the LM was 5.0 km.
/Length 3617 The control and display modules were situated in front of the handle and gave information on the speed, heading, pitch, and power and temperature levels. /Subtype /XML /Title (Microsoft Word - E-17060 TM.docx) $79.95 $ 79. The rear wheels folded out and locked in place and when they touched the ground the front of the rover could be unfolded, the wheels deployed, and the entire frame let down to the surface by pulleys. These were used to power the drive and steering motors and also a 36 volt utility outlet mounted on front of the LRV to power the communications relay unit or the TV camera. The Lunar Roving Vehicle (LRV) was an electric vehicle designed to operate in the low-gravity vacuum of the Moon and to be capable of traversing the lunar surface, allowing the Apollo astronauts to extend the range of their surface extravehicular activities.
On Earth, wheels with pneumatic tires have proven very effective and efficient, but the Moon and Mars are different and not very friendly to the average steel-belted radial with tiger paw grip. The rover components locked into place upon opening. Tech Specs Legs. >> Without it, the major scientific discoveries of Apollo 15, 16, and 17 would not have been possible; and our current understanding of lunar evolution would not have been possible." Free shipping on many items | Browse your favorite brands | affordable prices. 8 0 obj Four lunar rovers were built, one each for Apollos 15, 16, qnd 17, and one that was used for spare parts after the cancellation of further Apollo missions. >> 3 0 obj The moon will also travel within about +/-5 degrees of the ecliptic through each month. /Count 0 The original cost-plus-incentive-fee contract to Boeing (with Delco as a major sub-contractor) was for $19 million and called for delivery of the first LRV by 1 April 1971, but cost overruns led to a final cost of $38 million. /PageLayout /SinglePage
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