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Aerodynamics and Fluid Mechanics
Embry-Riddle Aeronautical University
International Journal of Aviation, Aeronautics, and Aerospace
Downwash; downwash angle gradient; swept wings; tapered wings; VLM; longitudinal static stability.
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A New Method For The Prediction Of The Downwash Angle Gradient, Mondher Yahyaoui Dr.
A New Method For The Prediction Of The Downwash Angle Gradient, Mondher Yahyaoui Dr.
International Journal of Aviation, Aeronautics, and Aerospace
A new method for the prediction of the downwash angle gradient due to aircraft wings across the span of an aft horizontal tail in the incompressible regime is presented. The approach is quite general and accounts for all practical wing geometric parameters except for wing twist where it is shown that this parameter has very little effect on the downwash angle gradient. The method consists of an empirical law which requires the prior knowledge of three constants. These have been computed either based on experimental data when available or using numerical data obtained using the vortex-lattice method. These constants are …