SIDE FORCE PREDICTIONS FOR SLENDER BODIES AT HIGH ANGLES OF ATTACK (PREDICTIONS DES FORCES LATERALES S'EXERCANT SUR DES CORPS EFFILES SOUS DES ANGLES D'ATTAQUE ELEVES)

Authors
  1. Chan, Y.Y.
Corporate Authors
Institute for Aerospace Research, Ottawa ONT (CAN);Chief of Research and Development, Ottawa ONT (CAN) Director Research and Development Air
Abstract
Calculations of the side forces and moments acting on a slender body at high angles of attack are presented. The procedure is based on a model which relates the far field wake structure, in the form of a system of vortex filaments, to the induced forces. The geometry of the vortices and the inner boundary conditions are derived from experimental data with laminar separations. The circulation of the vortices is determined by the dynamics of the vortex system. Enhancement of the vortex strength by the nose shape is also considered. The flow about a body with an ogive nose is employed as a model for the development of the method. The established procedure is then applied to bodies with conical noses. The concept is shown to be general and can be applied in principle to different separation conditions and nose shapes, provided the inner conditions from these cases are properly specified.
Report Number
NAE-LTR-HA-79 — Laboratory Technical Report
Date of publication
15 Apr 1987
Number of Pages
64
DSTKIM No
88-00745
CANDIS No
53986
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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