12 May 1995 Shape control of an adaptive wing for transonic drag reduction
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Theory and experiments to control the static shape of flexible structures by employing internal translational actuators are summarized and plants to extend the work to adaptive wings are presented. Significant reductions in the shock-induced drag are achievable during transonic- cruise by small adaptive modifications to the wing cross-sectional profile. Actuators are employed as truss elements of active ribs to deform the wing cross section. An adaptive-rib model was constructed, and experiments validated the shape-control theory. Plans for future development under an ARPA/AFWAL contract include payoff assessments of the method on an actual aircraft, the development of inchworm TERFENOL-D actuators, and the development of a method to optimize the wing cross-sectional shapes by direct-drag measurements.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fred Austin, William C. Van Nostrand, "Shape control of an adaptive wing for transonic drag reduction", Proc. SPIE 2447, Smart Structures and Materials 1995: Industrial and Commercial Applications of Smart Structures Technologies, (12 May 1995); doi: 10.1117/12.209348; https://doi.org/10.1117/12.209348

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