Accession Number : AD0745144

Title :   A Discrete Potential Element Approach to Nonsteady Subsonic Lifting Surface Theory.

Descriptive Note : Doctoral thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Breckon,Richard Louis

Report Date : JUN 1972

Pagination or Media Count : 189

Abstract : A discrete potential element approach to subsonic numerical lifting surface theory has been developed and shown to be practical in predicting the nonsteady loading on harmonically oscillating, medium to low aspect ratio wings. A unique method of including the wake effect in the wing kernel function matrix prior to solution of the singular integral downwash equation was devised. Termination of the effective wake a finite distance downstream of the wing was also investigated. The discrete element method has been extended to the case of an oscillating wing, to investigate nonplanar interference effects. (Author)

Descriptors :   (*AERODYNAMIC CONTROL SURFACES, SUBSONIC CHARACTERISTICS), (*LIFT, MATHEMATICAL PREDICTION), WINGS, AERODYNAMIC LOADING, NUMERICAL ANALYSIS, EQUATIONS OF MOTION, DOWNWASH, WAKE, OSCILLATION, INTERFERENCE, THESES

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE