Effect of Winglets on Performance and Handling Qualities of General Aviation Aircraft

Recent flight and wind tunnel evaluations of winglets mounted on general aviation airplanes have shown improvements in cruise fuel efficiency, and climbing and turning performance. Some of these analyses have also uncovered various effects of winglets on airplane handling qualities. Retrofitting an airplane with winglets can result in reduced cross wind take-off and landing capabilities. Also, winglets can have a detrimental effect on the lateral directional response characteristics of aircraft which have a moderate to high level of adverse yaw due to aileron. 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 these flying quality problems.

[1]  P. W. Brown,et al.  Exploratory piloted simulator study of the effects of winglets on handling qualities of a representative agricultural airplane , 1980 .

[2]  Peter T. Reynolds.  The Learjet “Longhorn” Series - The First Jets with Winglets , 1979 .

[3]  P. L. Deal,et al.  Flight evaluation of the effect of winglets on performance and handling qualities of a single-engine general aviation airplane , 1980 .

[4]  Kent R. Crenshaw.  Stability and Control Characteristics of the Winglet Configured KC-135A , 1976 .

[5]  C. A. Shollenberger.  Application of an optimized winglet configuration to an advanced commercial transport , 1979 .

[6]  F. L. Jordan.  Development of test methods for scale model simulation of aerial applications in the NASA Langley Vortex Facility , 1980 .

[7]  R. D. Gilkey,et al.  Design and wind tunnel tests of winglets on a DC-10 wing , 1979 .

[8]  Charles R. Chalk,et al.  Background Information and User Guide for Mil-F-8785B (ASG), 'Military Specification-Flying Qualities of Piloted Airplanes' , 1969 .

[9]  S. G. Flechner,et al.  Experimental results of winglets on first, second, and third generation jet transports , 1978 .

[10]  Richard T. Whitcomb,et al.  A design approach and selected wind tunnel results at high subsonic speeds for wing-tip mounted winglets , 1976 .

[11]  J L Johnson,et al.  Full-Scale Wind-Tunnel Investigation of an Ayres S2R-800 Thrush Agricultural Airplane , 1979 .

[12]  Norm Conley.  Winglet Toe-Out Angle Optimization for the Gates Learjet Longhorn Wing , 1980 .

[13]  George W. Loptien.  The Effect of Winglets on the KC-135A Aircraft , 1978 .

[14]  R. Q. Boyles,et al.  Advanced System Design Requirements for Large and Small Fixed-wing Aerial Application Systems for Agriculture , 1979 .