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The preliminary design review was originally planned to be completed by June 2017. [5] While NASA received three inquiries for its August 2017 request for proposals, Lockheed was the sole bidder. [6] On April 2, 2018, NASA awarded Lockheed Martin a $247.5 million contract to design, build and deliver in late 2021 the Low-Boom X-plane.
Supersonic speed is the speed of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level , this speed is approximately 343.2 m/s (1,126 ft/s; 768 mph; 667.1 kn; 1,236 km/h).
At Mach 0.65, u is 65% of the speed of sound (subsonic), and, at Mach 1.35, u is 35% faster than the speed of sound (supersonic). An F/A-18 Hornet creating a vapor cone at transonic speed just before reaching the speed of sound. The local speed of sound, and hence the Mach number, depends on the temperature of the surrounding gas.
It was the final assessment for the Crew Dragon capsule and Falcon 9 launch system before they would be certified to carry humans into space. [6] Booster B1046.4 and an uncrewed capsule C205 were launched from Launch Complex 39A (LC-39A) on a suborbital trajectory, followed by an in-flight abort of the capsule at max Q and supersonic speed.
NASA used the pre-production XB-70 triple-sonic bomber prototype for high-speed research in the. 1960s. - NASA
SMART is a canisterised hybrid system, made up of a long-range missile carrier that can travel at supersonic speed and a lightweight torpedo as payload, for anti-submarine warfare (ASW) role. The objective behind the project was to develop a quick-reaction system that can launch torpedoes from standoff distance. [3]
Venus is testing its high-Mach-speed advanced propulsion system and has achieved supersonic flight with a drone using a rocket engine. Tie believes SpaceX's Starship could be one of the likeliest ...
These missiles travel faster than the speed of sound, usually using ramjet engines. The range is typically 100–500 km, but can be greater. Guidance systems vary. Examples: ASALM US ALCM prototype, test-flown to hypersonic Mach 5.5; 3M-54 Kalibr (4,500 km, Mach 3) (the "Sizzler" variant is capable of supersonic speed at the terminal stage only)