Accession Number : AD0289882

Title :   APPLICATION OF THE NASA KERNEL-FUNCTION PROCEDURES TO GENERALLY DEFORMING WINGS

Corporate Author : AEROJET-GENERAL CORP AZUSA CALIF

Report Date : OCT 1962

Pagination or Media Count : 1

Abstract : A method is described for obtaining generalized aerodynamic forces by utilizing the NASA KernelFunction Procedures. An evaluation of the generalized aerodynamic forces and the consequent flutter conditions is made for the particular case of a uniform, cantilevered, 70 degree delta wing. The supersonic Kernel-Function Procedure was found to be inadequate for treating the elastic modes on this low-aspect-ratio wing; the subsonic procedure, however, appears to work satisfactorily. The theoretical flutter predictions are compared with the experimental results of NASA Report TM X-53 (AD-222 902). The Kernel-Function predictions for quasi-steady flow (k approaches O) appear to be superior to those for the complete unsteady case k = omega sub fc sub r/2V sub f. Based on this limited comparison, it appears that for this low-aspect-ratio wing the large transient effects predicted by linearized theory in the transonic regime may not actually exist. (Author)

Descriptors :   *DELTA WINGS, AERODYNAMIC CHARACTERISTICS, ASPECT RATIO, DEFORMATION, ELASTIC PROPERTIES, GAS FLOW, INTEGRAL EQUATIONS, LIFT, MATHEMATICAL ANALYSIS, SUBSONIC FLOW, SUPERSONIC FLOW, THEORY, VIBRATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE