Free-Stream Characteristics of A Family of Low-Aspect-Ratio, All-Movable Control Surfaces for Application to Ship Design
DAVID TAYLOR MODEL BASIN WASHINGTON DC
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The free-stream characteristics of a family of low-aspect ratio, all-movable control surfaces are presented. These characteristics-i.e., force and moment coefficients, and chordwise and spanwise center of pressure locations - are plotted as functions of the angle of attack for each surface at various Reynolds numbers in both the ahead and the astern conditions. Investigations were made of the following three aspects ratios 1, 2, and 3 five section shapes, two tip shapes, faired and square and three sweep angles. Cross-plots were made to assess the effects of these parameters, and semi-empirical equations for the force and moment coefficients suitable for design applications are presented. Also included is a design technique for computing the control surface shaft torque.
- Marine Engineering