Accession Number : AD0256029

Title :   UNSTEADY AERODYNAMIC FORCES ON A SLENDER BODY OF REVOLUTION IN SUPERSONIC FLOW

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s) : BOND,REUBEN ; PACKARD,BARBARA B.

Report Date : MAY 1961

Pagination or Media Count : 1

Abstract : Linearized slender-body theory is applied to the computation of aerodynamic forces on an oscillating, or deforming, body in supersonic flow. The undeformed body is a body of revolution and the deformed body is represented by movement of a line through the centers of the cross sections which are assumed to remain circular. The time dependence is based on sinusoidal motion. For a body of vanishing thickness the slender-body theory yields the apparent mass approximation as it is obtained for incompressible crossflow around a cylinder. Both linearized slender-body theory and the apparent mass approximation are used to calculate the pitching-moment coefficients on a rigid slender body with a parabolic arc nose cone, and these coefficients are compared with some experimental results. (Author)

Descriptors :   *AERODYNAMIC CHARACTERISTICS, *BODIES OF REVOLUTION, *SUPERSONIC FLOW, BESSEL FUNCTIONS, CONTROL, CYLINDRICAL BODIES, DEFORMATION, DIFFERENTIAL EQUATIONS, DRAG, EQUATIONS, INTEGRAL TRANSFORMS, LIFT, LOAD DISTRIBUTION, MATHEMATICAL ANALYSIS, MOMENTS, OSCILLATION, PARABOLIC BODIES, STABILITY, STRESSES

Distribution Statement : APPROVED FOR PUBLIC RELEASE