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Intercontinental ballistic missiles use celestial navigation to check and correct their course (initially set using internal gyroscopes) while flying outside the Earth's atmosphere. The immunity to jamming signals is the main driver behind this seemingly archaic technique.
Its complicated celestial navigation system gave it a claimed CEP of about 8,000 feet (2,400 m). The Snark was an air-breathing missile, intended to be launched from a truck-mounted platform by two solid-fueled rocket booster engines. The Snark was propelled by an internal turbojet engine for the rest of its flight.
Celestial navigation is a position fixing technique that was devised to help sailors cross the featureless oceans without having to rely on dead reckoning to enable them to strike land. Celestial navigation uses angular measurements (sights) between the horizon and a common celestial object. The Sun is most often measured.
[citation needed] Nortronics, Northrop's electronics development division, had developed an astro-inertial navigation system (ANS), which could correct inertial navigation errors with celestial observations, for the SM-62 Snark missile, and a separate system for the ill-fated AGM-48 Skybolt missile, the latter of which was adapted for the SR-71.
Celestial navigation The XSSM-A-5 Boojum , also known by the project number MX-775B , was a supersonic cruise missile developed by the Northrop Corporation for the United States Air Force in the late 1940s.
A Russian Yars intercontinental ballistic missile launcher rolls on Red Square during the Victory Day military parade in central Moscow on May 9, 2024. - Alexander Nemenov/AFP/Getty Images/File.
The D-5's equipment section contains critical guidance and flight control avionics, such as the Mk 6 navigation system. The equipment section also contains the third-stage TVC system, ordnance for ejecting from the second-stage motor, and the MIRV platform. The nose fairing shields the payload and third-stage motor.
His inventions continued into the postwar era of jet aircraft, to produce the Northrop F-89 Scorpion all-weather interceptor, the Northrop YB-49 long-range bomber, the Northrop Snark intercontinental missile, and automatic celestial navigation systems.