Accession Number : AD0615506

Title :   MEASUREMENT OF BASE PRESSURE IN FREE FLIGHT,

Corporate Author : REDSTONE SCIENTIFIC INFORMATION CENTER REDSTONE ARSENAL ALA

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

Report Date : MAR 1965

Pagination or Media Count : 9

Abstract : The dependency of base pressure on Mach number M in cylindrical bodies with hemispherical ends, in the range of M numbers 1.32 to 2.91 and Reynolds numbers (changing proportionately to the velocity) from 900,000 to 2,000,000, was investigated on a modern ballistic projectile. Tests were performed by a method in which the deflection of the upper diaphragm was measured. This diaphragm was in the bottom of the projectile and covered a small chamber which was filled with air under atmospheric pressure and having the same temperature as that of the surrounding medium.

Descriptors :   (*BASE FLOW, PRESSURE), (*CYLINDRICAL BODIES, FREE FLIGHT TRAJECTORIES), ANGLE OF ATTACK, LEAST SQUARES METHOD

Distribution Statement : APPROVED FOR PUBLIC RELEASE