The Dependence of a Sonic Boom on the Relative Positions of Bodies in a Supersonic Flow

The level of a sonic boom that occurs in a supersonic air flow around two bodies-a disk and a thin revolving body-is calculated. The bodies are placed one after another. The thin body is in the aerodynamic shadow of the disk. The Mach number of the incident flow is 2. The calculations are performed using the combined body phantom method. By varying the position and size of the disk, it is possible to reduce the level of the sonic boom. Based on the calculation results, the gas-dynamic factors affecting the level of the sonic boom are described.