Accession Number : ADP004169

Title :   Theoretical Study of Non-Linear Unsteady Aerodynamics of a Non-Rigid Lifting Body,

Corporate Author : GEORGIA INST OF TECH ATLANTA SCHOOL OF AEROSPACE ENGINEERING

Personal Author(s) : Wu,J. C. ; Sankar,N. L. ; Chen,H. H.

Report Date : 1984

Pagination or Media Count : 11

Abstract : A recently developed general theory of aerodynamics is used in an investigation of non-linear unsteady flow problems involving a non-rigid lifting body. It is shown that this theory, developed on the basis of viscous flow equations, permits the important interactive fluid dynamic elements dominating the aerodynamics of non-linear unsteady flows to be identified and their contributions evaluated individually. Closed form expressions for the lift, the drag, and the power expenditure of the Weis-Fogh problem, considered as a special case of flexible lifting bodies, are presented and discussed.

Descriptors :   *Unsteady flow, *Wings, Lifting bodies, Flexible structures, Vortices, Nonlinear systems, Aerodynamic lift, Aerodynamic drag, Mathematical models, Viscous flow, Numerical methods and procedures, Rigidity, Flight, Aerodynamic forces, Theory, Nonlinear analysis

Distribution Statement : APPROVED FOR PUBLIC RELEASE