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:

1966-12-01

Pagination or Media Count:

66.0

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