INVESTIGATIONS OF THE SONIC BOOM PROBLEM AT THE INSTITUTE OF THEORETICAL AND APPLIED MECHANICS, SIBERIAN BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES

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 fl ow over a body of revolution at Mach number M = 2, that a decrease in the fl ow temperature near the body leads to a change in the fl ow 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 infl uence of the relative position and geometrical shape of confi guration 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 fl ight has been determined. The scheme (IZS method) for measuring in the experiment disturbed pressure profi les at a given distance from the investigated model has been described.
   
Author:  V. M. Fomin, V. F. Volkov, T. A. Kiseleva and V. F. Chirkashenko
Keywords:  supersonic fl ow, sonic boom, cryogenic action, monoplane, tandem wing confi guration, engine nacelle.
Page:  1110