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Apollo 15 (July 26 – August 7, 1971) was the ninth crewed mission in the Apollo program and the fourth Moon landing. It was the first J mission , with a longer stay on the Moon and a greater focus on science than earlier landings.
The "Apollo 15 Preliminary Science Report" said that most of the measurements of gas made by the spectrometer were actually caused by the spacecraft itself. The crew was woken 18 minutes early when it was found that their orbit had decayed to 58.8 by 7.6 nm (108.8 by 14.1 km).
Apollo 15 lunar surface operations were conducted from July 30 to August 2, 1971, by Apollo 15 Commander David Scott and Apollo Lunar Module Pilot James Irwin, who used the first Lunar Roving Vehicle to make three exploratory trips away from their landing site at the base of the Apennine Mountains, near Hadley Rille.
Scott, Worden, and Irwin were publicly named as the crew of Apollo 15 on March 26, 1970. [41] Apollo 15 was originally scheduled to be an H mission, with a limited stay of 33 hours on the Moon and two moonwalks, but the cancellation of two Apollo missions in mid-1970 meant the flight would be a J mission, with three moonwalks during its three ...
Apollo 15 was the first mission to carry the Scientific Instrument Module (SIM) bay, which contained a panoramic camera, gamma ray spectrometer, mapping camera, laser altimeter and mass spectrometer. Worden had to operate the shutter and lenses on the cameras and turn on and off the various instruments.
Apollo 15 was the first of the Apollo program's "J" Missions [2] which used an enhanced Lunar Module that was capable of supporting a 3-day stay on the lunar surface *and* the delivery of the Lunar Roving Vehicle (LRV or "Rover") to the surface to allow the crew to extend the range of their exploration and to provide remote TV coverage.
A Man On The Moon: The Voyages of the Apollo Astronauts. Viking. ISBN 0-670-81446-6. Harland, David M. (1999). Exploring the Moon: The Apollo Expeditions. Springer/Praxis Publishing. ISBN 1-85233-099-6. NASA Manned Spacecraft Center (1972). Apollo 15 Preliminary Science Report. Scientific and Technical Office, NASA. Apollo 15 Flight Journal ...
Apollo 15 was launched on July 26, 1971, with David Scott, Alfred Worden and James Irwin. Scott and Irwin landed on July 30 near Hadley Rille, and spent just under two days, 19 hours on the surface. In over 18 hours of EVA, they collected about 77 kilograms (170 lb) of lunar material. [120] Apollo 16 landed in the Descartes Highlands on April ...