Accession Number : AD0607145

Title :   MEASUREMENT OF BASE PRESSURE IN FREE FLIGHT,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Mishin,G. I.

Report Date : 18 SEP 1964

Pagination or Media Count : 9

Abstract : The dependence of base pressure on the Mach number M on cylindrical bodies having the front section in the shape of a hemisphere in the range of M numbers from 1.32 to 2.91 and on the Reynolds number R sub L (varying proportionally to the velocity) from 0.9 . 1,000,000 to 2.0. 1,000,000 was investigated on a modernized ballistic unit. The experiments were carried out with respect to a method using the deflection of a rubber diaphragm placed in the bottom of the model and sealing off a small cavity filled with air at 1 atm and the temperature of the ambient medium.

Descriptors :   (*BASE FLOW, PRESSURE), WIND TUNNEL MODELS, CYLINDRICAL BODIES, AERODYNAMIC CHARACTERISTICS, PHOTOGRAPHIC ANALYSIS, USSR

Distribution Statement : APPROVED FOR PUBLIC RELEASE