Accession Number:

ADP006069

Title:

Dynamic Stability of Hypersonic Conical Lifting Vehicles According to Newton-Busemann Theory,

Descriptive Note:

Corporate Author:

WATERLOO UNIV (ONTARIO)

Personal Author(s):

Report Date:

1987-11-01

Pagination or Media Count:

13.0

Abstract:

In this paper a theory is given of the aerodynamic stability of hypersonic conical lifting vehicles performing small amplitude pitching motion about its steady flight by using the Newton-Busemann flow theory, which is the rational limit of gasdynamic theory as the flight Mach number M at infinity approaches infinity and the ratio material functions as independent variables which are a generalisation of the stream functions of geodesics of the body surface. The unsteady flow field is then calculated by perturbation of the steady flow in particular for conical shapes it requires only numerical quadrature. The theory is applied to conical wings of parabolic cross-section and the dependence of the stiffness and damping-in-pitch derivative on the angle of attack, the slenderness, concavity and convexity of the wing, and on the pivot axis position is studied systematically.

Subject Categories:

  • Fluid Mechanics
  • Aerodynamics
  • Research and Experimental Aircraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE