Sound Amplification by a Supersonic Jet

摘要

Thus, at certain incidence angles of the sawtooth-like sound waves of a finite amplitude to the linearly unstable shear layer of a supersonic jet, a significant amplification of sound radiated by such a jet at the external excitation frequency is possible. This radiation is connected with the intensity increase of disturbances generated in the jet under sound excitation and, as a consequence, with the intensity increase of Mach waves radiated by them.