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Light gyroplane empennage design considerations

Part of: 75 year anniversary of Aeronautical Engineering at Glasgow University

Published online by Cambridge University Press:  27 January 2016

S. S. Houston
S. S. Houston*
Affiliation:
Aerospace Sciences Research Division, University of Glasgow, Glasgow, UK
*
[email protected]
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Abstract

The light gyroplane is a class of aircraft popular with amateur constructors and pilots. As a result, there is limited design guidance available since formal technical resources are not available to the community. Rule-of-thumb, intuition and historical experience tend to influence design evolution. Empennage configuration is a prime example of this paradigm, and the objective of this Paper is to explore those factors that influence horizontal stabiliser effectiveness with particular reference to dynamic stability. An individual-blade rotorcraft mathematical model is coupled with a vorticity-based flowfield code, necessary to capture the highly interactional aerodynamics associated with empennage location at the rear of the airframe. A parametric study of horizontal stabiliser location shows that maximum benefit from the energising influence of the propeller slipstream is obtained if the surface is placed near the edge of the propeller wake. Further, traditional design parameters such as tail volume ratio offer an incomplete indicator of empennage effectiveness without consideration of airframe blockage and propeller slipstream. It is concluded that empennage sizing calculations can be straightforward, but require due consideration of the impact of the close-coupled nature of the vehicle on stabilising surface aerodynamic effectiveness.

Type
Research Article
Information
The Aeronautical Journal , Volume 115 , Issue 1170 , August 2011 , pp. 505 - 511
Copyright
Copyright © Royal Aeronautical Society 2011 

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References

1. Stinton, D. The Design of the Aeroplane, BSP Professional Books, Oxford, 1983, pp 382–428.Google Scholar
2. Bramwell, A.R.S. Longitudinal Stability and Control of the Single Rotor Helicopter, Reports and Memoranda of the Aeronaut Research Council 1304, 1959.Google Scholar
3. Prouty, R.W. Helicopter Aerodynamics, Helobooks, Mojave CA, USA, 2004, pp 375–382.Google Scholar
4. Ferguson, S.W. and Builta, K.E. Development of a Fly-By-Wire Elevator for the Bell Helicopter Textron 214ST, American Helicopter Society 35th Annual Forum Proceedings, Washington, DC, USA, May 1979.Google Scholar
5. Dumond, R.C. and Simon, D.R. Flight investigation of design features of the S-67 winged helicopter, J American Helicopter Society, 1973, 18, (3), pp 2–9.Google Scholar
6. Amer, K.B., Prouty, R.W., Walton, R.P. and Engle, J.E. Handling Qualities of Army/Hughes YAH-64 Advanced Attack Helicopter, American Helicopter Society 34th Annual Forum Proceedings, Washington, DC, USA, May 1978.Google Scholar
7. de lA CIERVA, J. The Development of the Autogiro, J of the Royal Aeronaut Society, 1926, 30, (181), pp 8–29.Google Scholar
8. Charnov, B.J. From Autogiro to Gyroplane, Praeger, Westport CT, 2003, pp 225–247.Google Scholar
9. Wheatley, J.B. An Analysis of the Factors that Determine the Periodic Twist of an Autogiro Rotor Blade, with a Comparison of Predicted and Measured Results, NACA TR600, 1937.Google Scholar
10. Houston, S.S. Longitudinal stability of gyroplanes, Aeronaut J, 1996, 100, (991), pp 1–6.Google Scholar
11. Coton, F., Smrcek, L. and Patek, Z. Aerodynamic characteristics of a gyroplane configuration, J Aircr, 1998, 35, (2), pp 274–279.Google Scholar
12. Houston, S.S. Identification of autogyro longitudinal stability and control characteristics, J Guidance, Control and Dynamics, 1998, 21, (3), pp 391–399.Google Scholar
13. Houston, S.S. Validation of a rotorcraft mathematical model for autogyro simulation, J Aircr, 2000, 37, (3), pp 403–409.Google Scholar
14. Anon., British Civil Airworthiness Requirements, Section T, Light Gyroplanes, Civil Aviation Authority CAP 643 Issue 3, 2003.Google Scholar
15. Riley, D. What’s up back there? exploring the propwash of a pusher gyro, Rotorcraft, March-April 2008.Google Scholar
16. Traum, M.J., Carter, R.G., Pitch Control Benefits of Elevators for Autogyros in Low-Speed Forward Flight, AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, USA, 2005.Google Scholar
17. Bramwell, A.R.S. Helicopter Dynamics, Arnold, London, USA, 1976, pp 171–174.Google Scholar
18. Brown, R.E. Rotor wake modeling for flight dynamic simulation of helicopters, AIAA J, 2000, 38, (1), pp 57–63.Google Scholar
19. Brown, R.E. and Houston, S.S. Rotor wake modelling for helicopter flight mechanics, J Aircr, 2000, 37, (4), pp 623–629.Google Scholar
20. Houston, S.S. Validation of a non-linear individual blade rotorcraft flight dynamics model using a perturbation method, Aeronaut J, 1994, 98, (977), pp 260–266.Google Scholar
21. Houston, S.S. Validation of a blade-element helicopter model for large-amplitude manoeuvres, Aeronaut J, 1997, 101, (1001), pp 1–7.Google Scholar
22. Houston, S.S. and Brown, R.E. Rotor wake modeling for simulation of helicopter flight mechanics in autorotation, 2003, J Aircr, 40, (5), pp 938–945.Google Scholar
23. Bramwell, A.R.S. Helicopter Dynamics, Arnold, London, 1976, pp 1–13.Google Scholar
24. Schumann, U. and Sweet, R.A. A direct method for the solution of Poissons equation with Neumann boundary conditions on a staggered grid of arbitrary size, J Computational Physics, 1976, 20, (2), pp 171–182.Google Scholar
25. Toro, E.F. A Weighted Average Flux Method for Hyperbolic Conservation Laws, Proceedings of the Royal Society of London, Series A: Mathematical and Physical Sciences, 1989, 423, (1864), pp 401–418.Google Scholar
26. Padfield, G.D. Helicopter Flight Dynamics, Blackwell Science, Oxford, UK, 1996, pp 260–264.Google Scholar
27. Padfield, G.D. On the use of approximate models in helicopter flight mechanics, Vertica, 1981, 5, (3), pp 243–259.Google Scholar