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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).
A supersonic aircraft is an aircraft which can exceed the speed of sound (Mach 1.0) in level flight. Type ... Dual jet and rocket powerplants,
A supersonic transport (SST) is a civil aircraft designed to transport passengers at speeds greater than the speed of sound. The only supersonic civilian aircraft to see service were the Soviet produced Tupolev Tu-144 which first flew in 1968 and last transported passengers in 1978, with NASA retiring it from any use in 1997; and the Franco ...
NASA used the pre-production XB-70 triple-sonic bomber prototype for high-speed research in the. 1960s. ... wingtips that remained horizontal at subsonic speeds, but folded down once supersonic to ...
Jet engine design shifts significantly between supersonic and subsonic aircraft. Jet engines, as a class, can supply increased fuel efficiency at supersonic speeds, even though their specific fuel consumption is greater at higher speeds. Because their speed over the ground is greater, this decrease in efficiency is less than proportional to ...
Mach 2.02 (~2,154 km/h or 1,338 mph) cruising speed [73] for optimum fuel consumption (supersonic drag minimum and turbojet engines are more efficient at higher speed); [74] fuel consumption at Mach 2 (2,120 km/h; 1,320 mph) and at altitude of 60,000 feet (18,000 m) was 4,800 US gallons per hour (18,000 L/h).
The supersonic speed range is that range of speeds within which all of the airflow over an aircraft is supersonic (more than Mach 1). But airflow meeting the leading edges is initially decelerated, so the free stream speed must be slightly greater than Mach 1 to ensure that all of the flow over the aircraft is supersonic.
In a pre-computer age, flight engineers were crucial to aviation. Former Concorde flight engineer Warren Hazelby explains how he helped fly the supersonic jet.