1986, ISBN: 9781156271568

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: … Mehr…

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The Lunar Orbiter Image Recovery Project (LOIRP) is a NASA project to digitize data tapes from the five 1966 and 1967 Lunar Orbiter spacecraft that were sent to the Moon. The tapes from the Lunar Orbiter missions were primarily used to locate landing sites for the manned Apollo missions, and once those Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The Lunar Orbiter Image Recovery Project (LOIRP) is a NASA project to digitize data tapes from the five 1966 and 1967 Lunar Orbiter spacecraft that were sent to the Moon. The tapes from the Lunar Orbiter missions were primarily used to locate landing sites for the manned Apollo missions, and once those missions were over, the data was largely forgotten. The original tapes were carefully archived for 20 years in Maryland. When the tapes were released back to NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, in about 1986, the decision of whether to scrap the tapes became the responsibility of archivist Nancy Evans. She instinctively decided that the tapes should be preserved. She recalled, "I could not morally get rid of this stuff". Within a few years, Nancy Evans was able to start a small project with funding from NASA and some assistance from Mark Nelson at Caltech. Eventually, they managed to find four rare Ampex FR-900 tape driveshighly specialized drives that had only been used by government agencies such as the FAA, USAF, and NASA. (The FR-900's transport was adapted from the 2" Quadruplex videotape format, only in the FR-900's case, the drive was designed to record a wideband analog signal of any type for instrumentation or other purposes, rather than specifically a video signal as in 2" Quad's case.) Over time, they also collected documentation and spare parts for the tape drives from government surplus. The project was successful at getting raw analog data from the tapes, but in order to generate the images, they discovered that they needed the specialized demodulation hardware that had been used by the Lunar Orbiter program, which no longer existed. They attempted to get funding from NASA or private sources to build. More: Books, , Lunar-Orbiter-Program~~Books-Llc, , , , , , , , , , Books LLC<

2010, ISBN: 1156271568

Kvalitets paperback, [PD: 01/05/2010], [PU: Books LLC], Seiten: 40

2010, ISBN: 1156271568

Kvalitets paperback, [PD: 01/05/2010], [PU: Books LLC], Seiten: 40