DIRECT BASE DRAG MEASUREMENT WIND TUNNEL TESTS OF PROJECTILE BASE CONFIGURATIONS (SERIES BDWT-1)

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Authors
  1. Girard, B.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
In support of a new research orientation on the reduction of base drag to increase the effective range of projectiles, DREV initiated a research study consisting of computational fluid dynamics (CFD) and wind tunnel testing. This memorandum pertains to the wind tunnel tests. The tests were performed in the DREV 0.6 m x 0.6 m facility at Mach numbers of 1.5 and 2.0 with 19 configurations of base/after-body models. The models were installed on a special modular system devised at DREV which allowed direct measurement of base or after-body drag. Base models were tested for four different thicknesses of approaching turbulent boundary layer. Also, tests were made to explore the dependence of the base pressure distribution with turbulent boundary layer thickness for a flat base model. Because these tests were performed at supersonic regime, while most of the available data is related to subsonic regime, the complementarity of results is of major interest. The data will be used to validate CFD simulation work (with inviscid and viscid codes) and to identify most promising base configuration to reduce projectile base drag.
Report Number
DREV-TM-1999-028 — Technical Memorandum
Date of publication
01 Feb 1999
Number of Pages
322
DSTKIM No
99-00525
CANDIS No
510522
Format(s):
Hardcopy;Document Image stored on Optical Disk

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