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LONGITUDINAL FORCE AND MOMENT DATA AT MACH NUMBERS FROM 0.60 TO 1.40 FOR A FAMILY OF ELLIPTIC CONES WITH VARIOUS SEMIAPEX ANGLES
Louis S Stivers, Lionel L. Levy
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Abstract
An investigation was made to determine the aerodynamic characteristics of 4 elliptic cones having plan-form semipex angles ranging from about 9 to 31 degrees, and also for 1 of the cones modified on the upper surface to reduce the base area by about 1/2. Tests were made for ANGLES OF ATTACK FROM ABOUT -2 TO +21 degrees, at Mach numbers from 0.60 to 1.40, and for a constant Reynolds number of 1.4 million, based on the length of the models. For each model, lift, pitching-moment, and drag coefficients, and lift-drag ratios are presented for the forebody, and axial-force coefficients are presented for the base. Calculated lift and pitching-moment curves for the elliptic cones, and lift-curve slopes for each model at supersonic Mach numbers are shown for comparison with the corresponding experimental values. Lift-drag ratios are also given for the forebody and base combined. These data are presented without discussion.