Lunar Roving Vehicle: The Electric Moon Buggy That Transformed Apollo Exploration
The Lunar Roving Vehicle was an electric rover used on Apollo 15-17 that expanded astronaut exploration range from hundreds of meters to tens of kilometers on the Moon.
The Lunar Roving Vehicle (LRV), informally the "moon buggy," was a battery-powered rover used on the final three Apollo missions: Apollo 15 (1971), Apollo 16 (1972), and Apollo 17: The Final and Most Scientifically Productive Moon Mission (1972). Developed by Boeing as prime contractor with General Motors (Delco Electronics) designing the drive system, the LRV was built in 17 months for approximately $38 million total program cost. ## Specifications Each rover weighed 210 kg (35 kg in lunar gravity), folded to fit in the descent stage of the Lunar Module, and deployed in minutes on the surface. Four independent 0.25 HP electric motors (one per wheel) provided all-wheel drive, powered by two 36-volt silver-zinc batteries. A T-handle controller replaced a conventional steering wheel. Maximum speed reached 18 km/h — the record set by Gene Cernan on Apollo 17. ## Transformative Impact Before the LRV, astronauts were confined to a few hundred meters of the lander on foot. The rover expanded the explorable radius to several kilometers: - **Apollo 15**: 27.9 km total distance - **Apollo 16**: 26.7 km - **Apollo 17**: 35.9 km Range was always limited by the "walk-back constraint" — never farther from the lander than astronauts could walk if the rover failed. ## Engineering Details The wheels were a masterpiece of design: open woven aluminum mesh with titanium chevron treads — near-zero weight, excellent traction on fine regolith, and no risk of flat tires. All three LRVs remain on the Moon at their respective landing sites. **See also:** The Apollo Program: Humanity's First Visits to the Moon (1961-1972)