Discrete grid actuator stiffened panels for aeroeleastic use

Tamara J. Leeks; Terrence A. Weisshaar

doi:10.1117/12.275678

6 June 1997 Discrete grid actuator stiffened panels for aeroeleastic use

Tamara J. Leeks, Terrence A. Weisshaar

Proceedings Volume 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems; (1997) https://doi.org/10.1117/12.275678
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

Active aeroelastic panels have been proposed for transonic drag reduction and panel flutter control. These active panels use actuators to create deformation of the panel surface, but restrict the actuators to the inner panel surface. One such active panel configuration consists of long, thin actuator/stiffeners attached to the panel surface to create an active grid. The purpose of this study is to examine interactions between panel out-of-plane deformation, actuator geometry and placement, including how many are used. A Rayleigh-Ritz model is used to describe panel response to actuator input. The accuracy of this efficient model is demonstrated by comparison to more elaborate finite element analysis. The study includes static deflection and flutter investigations. One study conclusion is that gridwork actuator stiffeners can produce more panel deflection than a single actuator spread over the surface, but more material is needed. For small numbers of stiffeners, those with a rectangular cross section create more deflection than those with a square cross section. However, this trend does not hold for large numbers of stiffeners. Placing stiffeners in the airflow direction is the best configuration for increasing panel flutter dynamic pressure. Rectangular stiffener cross sections increase the dynamic pressure more than square stiffener cross sections.

Citation Download Citation

Tamara J. Leeks and Terrence A. Weisshaar "Discrete grid actuator stiffened panels for aeroeleastic use", Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); https://doi.org/10.1117/12.275678

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