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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.
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.
The second day of Apollo 15 centered around the second planned midcourse correction and a preliminary check of the lunar module, Falcon. Mission Control first got the crew to perform a 0.7 second burn of the SPS engine before the planned second course correction. This was designed to isolate the location of the short in the Delta-V Thrust switch.
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. During the coast back to Earth, he would ...
The initial A–G [11] [14] list was expanded to include later mission types: [1]: 466 H-type missions—Apollo 12, 13 (planned) and 14—would perform precision landings, and J-type missions—Apollo 15, 16 and 17—would perform thorough scientific investigation.
You may think you've seen photos of the moon landing before, but you haven't like this.
Orbital photo of the Hadley-Apennine site; Apollo 15 landing site is marked with a circle. Hadley–Apennine is a region on the near side of Earth's Moon that served as the landing site for the American Apollo 15 mission, the fourth crewed landing on the Moon and the first of the "J-missions", in July 1971.
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.