Projectile Supersonic Drag Characteristics
Final rept. Jan-Jun 1990
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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An observation of projectile free flight behavior - that above Mach 2.5, velocity is linear with distance - leads to a proposed simple functional form for the drag coefficient. Equations are derived that allow the determination of both the zero-yaw drag coefficient as a function of Mach number and the yaw-drag coefficient from as few as two test firings. Good agreement with free-flight range data has been obtained.