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Hypermanoeuvrability and visual cloaking: new adaptive aerostructures technologies for UAVs

Published online by Cambridge University Press:  03 February 2016

R. Barrett
R. Barrett*
Affiliation:
adaptivebarrett@yahoo.com, Adaptive Aerostructures Laboratory, University of Kansas, Lawrence, Kansas, USA
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Abstract

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The paper begins with a summary of the performance characteristics of the most important classes of adaptive aerostructures which are relevant for UAVs and the materials which drive them. The paper describes several classes of UAVs that take advantage of the various kinds of adaptive aerostructures technologies. These technologies are shown to be suitable for very small and even hard-launched UAVs, hovering, high speed, low speed and convertible UAVs (i.e. UAVs that can transition between helicopter and aircraft/missile flight modes). The first class of UAVs presented highlights newly invented post-buckled precompressed (PBP) actuators which are particularly well suited to enhancing convertible coleopters or ‘ultra-high performance UAVs.’ These UAVs are capable of hovering for extended periods of time as a helicopter in gusty, windy, dusty, real tactical environments, then popping up, converting and dashing out like a missile at several hundred knots. The paper shows photos (i.e. no computer simulations) of convertible coleopter launches from armoured vehicles, a battle-damage assessment exercise and a live fire sequence with 40mm munitions. The paper concludes with a description of the visual signature suppression (VSS) system which was employed on a 2m UAV. The VSS system was shown to suppress the visual cross section to below 1·8cm2 which is the threshold for human aircraft observation. Accordingly, VSS equipped aircraft are said to ‘disappear’ in mid flight.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 114 , Issue 1156 , June 2010, pp. 391 - 398
Copyright
Copyright © Royal Aeronautical Society 2010 

References

1. Crawley, E.F. and De Luis, J., Use of piezoelectric actuators as elements of intelligent structures, AIAA J), October 1987, 25, (10), pp 987–997.Google Scholar
2. Baz, A. and Poh, S., Performance of an active control system with piezoelectric actuators, J Sound and Vibration, 22 October 1988, 126, (2), pp 327–343.Google Scholar
3. Prechtl, E.F. and Hall, S.R., Design of a high efficiency, large stroke electromechanical actuator, J Smart Materials and Structures, 1999, 8, pp 13–30, IOP Publishing, Bristol, UK.Google Scholar
4. Moskalik, A.J. and Brei, D., Analytical dynamic performance modeling for individual C-block actuators, J Vibrations and Acoustics, 1998, 121, pp 221–230.Google Scholar
5. Moskalik, A.J. and Brei, D., Force-deflection behavior of piezoelectric C-block actuator arrays, Smart Materials and Structures, 1999, 8, pp 531–543.Google Scholar
6. Ervin, J. and Brei, D., Recurve piezoelectric-strain-amplifying actuator architecture, IEEE/ASME Transactions on Mechatronics, December 1998, 3, (4), pp 293–301.Google Scholar
7. Clement, J., Brei, D., Moskalik, A. and Barrett, R., Bench-top performance characterization of a C-block driven active flap system, 1998, 39th Structures, Structural Dynamics and Materials Conference 20-23 April 1998, Long Beach, CA, Paper AIAA-98-2039, American Institute of Aeronautics and Astronautics, Washington, DC, USA.Google Scholar
8. Schwartz, R.W., Laoratanakul, P., Nothwang, W.D., Ballato, J., Moon, Y. and Jackson, A., Understanding mechanics and stress effects in rainbow and thunder actuators, SPIE Smart Structures and Materials, Active materials: Behavior and Mechanics, 2000, 3992, (363).Google Scholar
9. Barrett, R., Burger, C., and Melian, J.P., Recent advances in uninhabited aerial vehicle (UAV) flight control with adaptive aerostructures, 2001, Fourth European Demonstrators Conference, 10-15 December 2001, Edinburgh, Scotland.Google Scholar
10. Barrett, R. and Lee, G., Design criteria, aircraft design, fabrication and testing of sub-canopy and urban micro-aerial vehicles, 2000, AIAA/AHS International Powered Lift Conference, 1 November 2000, Alexandria, VA, USA.Google Scholar
11. Barrett, R. and Stutts, J., Development of a piezoceramic flight control surface actuator for highly compressed munitions, 1998, 39th Structures, Structural Dynamics and Materials Conference, 20-23 April 1998, Long Beach, CA, Paper AIAA-98-2034, American Institute of Aeronautics and Astronautics, Washington, DC, USA.Google Scholar
12. Barrett, R., Adaptive aerostructures, improving high performance, subscale military UAVs, 2004, 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 12th AIAA/ASME/AHS Adaptive Structures Conference, 19-22 April 2004, Palm Springs, CA, USA, AIAA paper 2004-1886.Google Scholar
13. Lesieutre, G.A. and Davis, C.L., Can a coupling coefficient of a piezoelectric actuator be higher than those of its active material?, J Intelligent Materials Systems and Structures, 1997, 8, pp 859–867.Google Scholar
14. Lesieutre, G.A. and Davis, C.L., Transfer having a coupling coefficient higher than its active material, 22 May 2001, US Pat 6,236,143.Google Scholar
15. Barrett, R. and Tiso, P., PBP Adaptive actuator device and embodiments, 18 February 2005, International Patent Application number PCT/NL2005/000054, via TU Delft.Google Scholar
16. Barrett, R., Vos, R., Tiso, P. and De Breuker, R., Post-buckled precompressed (PBP) actuators: enhancing VTOL autonomous high speed MAVs, 2005, 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 18-21 April 2005, Austin, TX, USA, Paper AIAA-2005-2113.Google Scholar
17. Vos, R., De Breuker, R., Barrett, R. and Tiso, P., Morphing wing flight control via post-buckled precompressed piezoelectric actuators, AIAA J Aircr, 13 June 2006.Google Scholar
18. Barrett, R., McMurtry, R., Vos, R., Tiso, P. and De Breuker, R., Post-buckled precompressed piezoelectric flight control actuator design, development and demonstration, J Smart Materials and Structures, October 2006, 15, (5), pp 1323–1331.Google Scholar
19. De Breuker, R., Vos, R., Barrett, R. and Tiso, P., Nonlinear semi-analytical modeling of post-buckled precompressed (PBP) piezoelectric actuators for UAV flight control, 2006, 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 14th AIAA/ASME/AHS Adaptive Structures Conference, 1-4 May 2006, Newport, RI, USA, AIAA-2006-1795.Google Scholar