Investigations of the Sonic Boom Problem at the Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences

摘要

This paper is a review of the series of investigations carried out at the S. A. Khristianovich Institute of Theoretical and Applied Mechanics (ITAM, Siberian Branch of the Russian Academy of Sciences (RAS)) aimed at solving the sonic boom problem. It has been shown, with the example of flow over a body of revolution at Mach number M = 2, that a decrease in the flow temperature near the body leads to a change in the flow structure in the region of the formation of a hanging shock wave and a decrease (by 12%) in the sonic boom intensity on the ground. The results are presented of investigations of the influence of the relative position and geometrical shape of configuration elements of a supersonic passenger airplane on the sonic boom parameters at long distances from the disturbance source. The prospective aspect of the supersonic passenger airplane providing the minimum level of sonic boom in cruising flight has been determined. The scheme (IZS method) for measuring in the experiment disturbed pressure profiles at a given distance from the investigated model has been described.