The effect of wingtip modifications on the stability and control characteristics of an agricultural airplane has been studied by means of a nonplanar quasi-vortex-lattice method. The method is used to compute the changes in steady state and perturbed state lateral-directional stability and control derivatives produced by wingtip mounted winglets, vortex diffuser vanes, and tip extensions. The study shows that the combination of excessive positive dihedral effect produced by the winglets and adverse yaw due to aileron deflection can have a detrimental effect on the roll control characteristics of the airplane. Introduction of an aileron-rudder-interconnect, and reduction of the effective dihedral by canting-in of the winglets, or addition of a lower winglet can eliminate the roll control problems.
Effects of Wingtip Modifications on Handling Qualities of Agricultural Aircraft
Sae Technical Papers
Business Aircraft Meeting and Exposition ; 1981
1981-02-01
Aufsatz (Konferenz)
Englisch
Method to Assess Lateral Handling Qualities of Aircraft with Wingtip Morphing (AIAA 2018-1015)
British Library Conference Proceedings | 2018
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