THEORETICAL AERODYNAMICS OF FLEXIBLE WINGS AT LOW SPEEDS. V. ENGINEERING METHOD FOR ESTIMATING PARAWING PERFORMANCE.
Final rept., Feb-Nov 65,
VIDYA DIV ITEK CORP PALO ALTO CALIF
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The purpose of this report is to present engineering methods for predicting the low-speed lift and drag characteristics of parawings. Most existing data, other than that obtained under this contract for delta parawings, are for large values of canopy slackness and for the special planform extensively tested by NASA. This planform, herein termed the NASA planform, has leading edges and root chord of equal length. Theory developed under this contract was found to furnish a satisfactory basis for an engineering prediction method for the lift and drag characteristics of triangular parawings. For NASA parawings, it was found necessary to place a satisfactory engineering prediction method. Calculative examples for both types of parawings are included. The desirability of further drag measurements with special emphasis on measuring support interference effects is pointed out. Author
- Fluid Mechanics