Accession Number : AD0737096

Title :   An Experimental Investigation of the Roll Rate of a Finned Projectile at Mach Numbers 1.5 and at Angles of Attack up to 90 Deg.

Descriptive Note : Final rept.,

Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AIR FORCE STATION TENN

Personal Author(s) : Uselton,James C.

Report Date : FEB 1972

Pagination or Media Count : 13

Abstract : Free-spinning roll tests were conducted on a finned projectile model in the von Karman Facility (VKF) Supersonic Wind Tunnel (A). The tests were conducted at a Mach number of 1.50 and at a Reynolds number, based on model length, 2,200,000. Spin rate was obtained at angles of attack from 0 to 90 deg for fin cant angles of 0 and 2 deg. The zero cant angle fin configuration did not spin at any angle of attack. The spin rate for the 2-deg cant angle fin configuration decreased with angle of attack and had dual stable roll modes at some of the higher angles of attack. (Author)

Descriptors :   (*FIN STABILIZED AMMUNITION, SUPERSONIC CHARACTERISTICS), WIND TUNNEL MODELS, SPINNING(MOTION), ANGLE OF ATTACK, PROJECTILES, FINS, ROLL, TEST METHODS

Subject Categories : Ammunition and Explosives
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE