Accession Number : AD0656491

Title :   THEORETICAL SOLUTIONS AND NUMERICAL RESULTS FOR LOW-ASPECT-RATIO RECTANGULAR JET-FLAP CONTROL SURFACES.

Descriptive Note : Final rept. Oct 65-Oct 66,

Corporate Author : THERM ADVANCED RESEARCH INC ITHACA N Y

Personal Author(s) : Erickson,John C. , Jr. ; Kaskel,Alvin L.

Report Date : DEC 1966

Pagination or Media Count : 66

Abstract : The lifting problem of a finite-aspect-ratio, thin, jet-flap control surface of rectangular planform in unbounded, incompressible, subcavitating flow is considered in the improved low-aspect-ratio approximation of H. R. Lawrence. A general method of numerical solution is derived for any regular or singular blowing jet-flap geometry. Numerical solutions are carried out for the following specific configurations: regular blowing from a flat plate at angle of attack; regular blowing over deflected mechanical flaps of ten and twenty percent chord; and singular blowing from a flat plate at zero angle of attack. Tables and curves of the computed lift and pitching-moment coefficients and chordwise load distributions for these configurations are presented over a wide range of the governing parameters. (Author)

Descriptors :   (*SUBMARINES, CONTROL SURFACES), (*CONTROL SURFACES, JET FLAPS), ASPECT RATIO, NUMERICAL ANALYSIS, LIFT, MOMENTUM, ANGLE OF ATTACK, RECTANGULAR BODIES, MANEUVERABILITY

Subject Categories : Submarine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE