Wind Tunnel Tests on a Nonaxisymmetric Projectile Shape at Mach Numbers 2.5 to 6.0.
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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Wing tunnel tests on spinning nonaxisymmetric projectile configurations at Mach numbers of 2.5 to 6.0 are reported. The projectile shapes are ogive- cylinder bodies which have been modified by machining three forward facing surfaces and three rearward facing surfaces on the projectile. The machined surfaces are twisted at a rate corresponding to a typical rifling twist. The forward facing surfaces produce a helical or corkscrew type effect and the rearward surfaces form a nonconical boattail and a triangular base. The objective of the test program was to study shapes which have improved stability characteristics which require less gyroscopic stabilization. A more slender, longer Ld projectile can then be flown which has lower drag and shorter time of flight to a moving target.
- Test Facilities, Equipment and Methods
- Ammunition and Explosives
- Fluid Mechanics