Effects of frequency and amplitude on the yawing derivatives of triangular, swept, and unswept wings and of a triangular-wing-fuselage combination with and without a triangular tail performing sinusoidal yawing oscillations

William Letko, Herman S. Fletcher
naca-tn-4390
SEP 1958


An investigation has been made to determine the effects of frequency and amplitude on the yawing derivatives of triangular, swept, and unswept wings. Some data were also obtained for a triangular -wing-fuselage combination with and without a triangular tail performing sinusoidal yawing oscillations. The oscillation data were compared with data obtained from steady-state yawing tests and the results of the present investigation and those of a pure sideslip investigation are compared both individually and as an algebraic sum with the combination derivatives obtained from an investigation in which the oscillation was a combination of yawing and sideslipping.

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