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The Apollo flight computer was the first computer to use silicon IC chips. [15] While the Block I version used 4,100 ICs, each containing a single three-input NOR gate, the later Block II version (used in the crewed flights) used about 2,800 ICs, mostly dual three-input NOR gates and smaller numbers of expanders and sense amplifiers.
It was conceived for the purpose of dictation but gained popularity with the general public after its use during the Apollo program lunar missions. It was released commercially in 1968. Sony TC-50 cassette tape recorder on display at the Houston Space Center. NASA furnished every astronaut with a Sony TC-50 from Apollo 7 in 1968 onward. [1]
To conform to these regulations the gate system must be checked with a calibrated force tester and the full results kept in a technical file for 7 years. If the gate is not tested it does not comply. Most gate kits can be fitted with safety equipment so that these limits are achieved and so cover that part of EN13241-1.
The engine developed about 1,600 pounds-force (7.1 kN) of thrust, which produced a velocity of 3,200 meters per second from lunar launch, to LOR, and CM docking. [ 7 ] [ 2 ] Lunar ascent by Apollo 17 ascent stage.
Engineers used the Neutral Buoyancy Simulator for working out kinks in designs, and astronauts provided feedback from their experiences in the simulator. For example, on August 6 and 7, 1969, astronauts Owen Garriott, Walter Cunningham, and Rusty Schweickart evaluated the Apollo Telescope Mount EVA film retrieval system. [3]: 1969-08 p. 27
Stephen White's Computer history site (the above article is a modified version of his work, used with permission) Digital Deli, edited by Steve Ditlea, full text of the classic computer book; Collection of old analog and digital computers at Old Computer Museum; ZX81 Computer Online Museum; Yahoo Computers and History
Apollo Launch Escape System diagram. If the rocket failed in the last five minutes before launch, the CM and the launch escape system (LES, see figure) would separate from the remainder of the rocket below with the LES propelling itself and the CM beneath it upward and eastward to the sea using a small solid-fueled motor (the launch escape motor) at the top of the tower on the launch escape ...
Front half of LOIRP's facilities. In February 2007, Wingo visited the four Ampex FR-900 tape drives for the first time in Evans's garage. Each drive was about 6 feet (1.8 m) tall, 3 feet (0.9 m) wide, as deep as a refrigerator, and weighed about 600 pounds (270 kg).