Accession Number : AD0895225

Title :   Reynolds Number Effect on Drag of the Angled Arrow Projectile,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Nestingen, I. M. ; Greene, J. E.

Report Date : 02 MAR 1951

Pagination or Media Count : 18

Abstract : This report presents the results of a series of shots fired in the NOL pressurized ballistics firing range to determine the effect of Reynolds number on drag of the Angled Arrow Projectile at Mach numbers of 1.86 and 2.87. Drag values were determined for a Reynolds number variation of nine million. The results obtained at M = 1.86 indicate an increase in drag coefficient of approximately 4.55 per cent for a change in Reynolds number from 2,000,000 to 11,000,000. At M - 2.87 an increase in drag coefficient of approximately 20 percent was obtained for a similar variation in Reynolds number. The drag values are in fair agreement with wind-tunnel tests and with the estimated free-flight values of the full-scale missile at high altitude.

Descriptors :   (*SABOT PROJECTILES, DRAG), (*GUIDED MISSILES, SABOT PROJECTILES), (*GUIDED MISSILE MODELS), WIND TUNNEL MODELS, SUPERSONIC CHARACTERISTICS, MODEL TESTS, VELOCITY, GUN LAUNCHERS, FIN STABILIZED AMMUNITION, SPARK SHADOWGRAPH PHOTOGRAPHY, FIRING TESTS(ORDNANCE), EXTERIOR BALLISTICS, PRESSURE, ANGLE OF ATTACK, SURFACE ROUGHNESS, HIGH ALTITUDE, FREE FLIGHT TRAJECTORIES, FLECHETTES, REYNOLDS NUMBER.

Subject Categories : Guided Missile Dynam, Config & Cntrl Surfaces
      Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE