Aeronautics Astronautics

Download Computers Take Flight: A History of NASA's Pioneering by James E. Tomayko PDF

By James E. Tomayko

Relates the method through which electronic fly-by-wire was once built at NASA's Dryden Flight examine heart in California from 1971 to 1985. Discusses fly-by-wire's contributions to the distance commute and the method through which the know-how used to be remodeled to different organisations and undefined.

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Additional info for Computers Take Flight: A History of NASA's Pioneering Digital Fly-By-Wire Project

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They also can compensate for drift in analog subcomponents. 19 Analysis of the choice between analog and digital computers shows that at the time any comparison made based on considerations of pure size and complexity does not show much difference. For simple systems like shortlived missiles and non-combat aircraft, analog computers are best in most instances. Conversely, most complex systems have long-living applications that benefit from software changes. ” Therefore, the final decision had some political aspects.

Eventually Avro had to install springs to provide imitation forces for the pilots. This aircraft is obscure because it had its official rollout on 4 October 1957, the same day the Soviets launched the first Sputnik. Nevertheless, when it had its first flight on 25 March 1958, fly-by-wire had come to high-performance aircraft, if only to provide a yaw damper extended to three-axis flight control. The Canadian government canceled the CF-105 in 1959. The beginning of the next decade marked a shift in the use of fly-by-wire.

Objections to redundant digital computers centered on size, power, and weight. Triplicating the logic circuitry and adding majority organs meant a penalty in all three areas. However, within a few years, transistors matured enough to replace vacuum tubes, core memories became more reliable and rugged (though still not very dense), and physical miniaturization together with lower power requirements all became common. Therefore, interest in using digital computers in control systems increased, and von Neumann’s elegant proofs became interesting to designers.

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