An investigation has been conducted on a series of two-dimensional after bodies to determine the effects of boattailing and angle of attack upon base and boattail pressures. Afterbodies vith boattail angles from 0° to 18 at angles of attack up to 14° were investigated at a free-stream Reynolds number sufficient to cause fully turbulent boundary layers to exist ahead of the after bodies. The models were tested at a free-stream Mach number of 5.98 which resulted in surface Mach numbers from approximately 3 to 7.
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