Accession Number : AD0776372

Title :   The Prediction and Measurement of Overpressures from Rocket Motor Blast Waves on Helicopter Surfaces.

Descriptive Note : Final technical rept.,

Corporate Author : TENNESSEE UNIV KNOXVILLE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s) : Kesselring,J. P. ; Milligan,M. W. ; Tennant,J. S.

Report Date : 31 DEC 1971

Pagination or Media Count : 33

Abstract : An empirical model applicable to blast fields generated by recoilless rifles in a free-field environment yields reasonable predictions of transient overpressure resulting from rocket exhaust blast. A second model of the recoilless rifle type is presented for conditions where reflecting surfaces are present. Using the free-field model, the upper bounds of pressure can be predicted at fixed points knowing the rocket chamber pressure and its nozzle exit diameter. (Author)

Descriptors :   *Overpressure, *Rocket exhaust, *Blast, *Aerodynamic characteristics, *Helicopters, Mathematical models, Mathematical prediction, Recoilless guns, Surface properties, Shock waves, Computerized simulation, Plumes, Theory

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE