Static aeroelastic deformation of flexible skin for continuous variable trailing-edge camber wing

Libo Liu; Weilong Yin; Fuhong Dai; Yanju Liu; Jinsong Leng

doi:10.1117/12.880323

27 April 2011 Static aeroelastic deformation of flexible skin for continuous variable trailing-edge camber wing

Libo Liu, Weilong Yin, Fuhong Dai, Yanju Liu, Jinsong Leng

Proceedings Volume 7977, Active and Passive Smart Structures and Integrated Systems 2011; 79771M (2011) https://doi.org/10.1117/12.880323
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

The method for analyzing the static aeroelastic deformation of flexible skin under the air loads was developed. The effect of static aeroelastic deformation of flexible skin on the aerodynamic characteristics of aerofoil and the design parameters of skin was discussed. Numerical results show that the flexible skin on the upper surface of trailing-edge will bubble under the air loads and the bubble has a powerful effect on the aerodynamic pressure near the surface of local deformation. The static aeroelastic deformation of flexible skin significantly affects the aerodynamic characteristics of aerofoil. At small angle of attack, the drag coefficient increases and the lift coefficient decreases. With the increasing angle of attack, the effect of flexible skin on the aerodynamic characteristics of aerofoil is smaller and smaller. The deformation of flexible skin becomes larger and larger with the free-stream velocity increasing. When the free-stream velocity is greater than a value, both of the deformation of flexible skin and the drag coefficient of aerofoil increase rapidly. The maximum tensile strain of flexible skin is increased with consideration of the static aeroelastic deformation.

Citation Download Citation

Libo Liu, Weilong Yin, Fuhong Dai, Yanju Liu, and Jinsong Leng "Static aeroelastic deformation of flexible skin for continuous variable trailing-edge camber wing", Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79771M (27 April 2011); https://doi.org/10.1117/12.880323

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