SR-72 "Aurora": dull hypersonic spy
Modern SR-72 is equipped with a ram air - jet engines, allowing it to fly at hypersonic speeds. These engines are fundamentally different from the turbojet. Lacking the compressor and the turbine, the air therein contracts and expands by means of complex systems of shock waves to the front of the aircraft and fuselage.
Top secret hypersonic aircraft - intelligence "Aurora"
When traveling at hypersonic velocity air moves faster, and it requires special fuel and pulse detonation engine, which can produce from 60 to 100 per second explosions. In conjunction with the shock wave is created by a rather peculiar sound and hear people. Moving at a speed greater than 1M, accompanied by the creation of a shock wave, with the cone it will spread more widely, the greater the speed.
