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Proceedings Paper

Preliminary design of smart structure fins for high-speed missiles
Author(s): James A. August; Shiv P. Joshi
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Paper Abstract

The preliminary design of aeroelastically tailored adaptive missile fins for supersonic speeds is presented. Due to the extreme operating environment of supersonic flight including high temperatures and pressures, a successful supersonic smart missile fin design has been more difficult to develop than previously developed subsonic smart missile fins. Currently research at the University of Texas at Arlington is being conducted to develop a light-weight, low-cost, smart missile fin capable of surviving the supersonic operating environment while providing performance comparable to existing missile fins. Efforts are being concentrated on using aeroelastic tailoring to enhance the effectiveness of existing actuators using smart structures, allowing a lower total actuator weight with better utilization of missile internal volume. Previous work (Barrett) has used piezoelectric elements to apply span-wise twist to a fixed fin or deflect an all-moving fin around a fixed spar. This research attempts to identify improvements and alternative designs for the all-moving smart fin to enable it to be used at supersonic speeds. Various techniques to reduce the control surface hinge moment are presented and compared to attempt to reduce control forces which allow smaller actuators to be used. Future work will focus on improved analysis of the aerodynamic interactions and the elimination of fuselage mounted actuators by the use of a combination of smart fin technologies.

Paper Details

Date Published: 1 May 1996
PDF: 8 pages
Proc. SPIE 2721, Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies, (1 May 1996);
Show Author Affiliations
James A. August, Univ. of Texas/Arlington (United States)
Shiv P. Joshi, Univ. of Texas/Arlington (United States)

Published in SPIE Proceedings Vol. 2721:
Smart Structures and Materials 1996: Industrial and Commercial Applications of Smart Structures Technologies
C. Robert Crowe, Editor(s)

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