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The use of inverse simulation for preliminary assessment of helicopter handling qualities

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

Published online by Cambridge University Press:  04 July 2016

D. G. Thomson  and
R. Bradley
D. G. Thomson
Affiliation:
Department of Aerospace Engineering, University of GlasgowGlasgow, UK
R. Bradley
Affiliation:
Department of Mathematics, Glasgow Caledonian UniversityGlasgow, UK
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Abstract

This paper describes a method for using inverse simulation to obtain a preliminary assessment of helicopter handling qualities. Formal descriptions of standard manoeuvres, defined to establish the handling qualities of military helicopters, are used to drive an inverse simulation of a subject helicopter. The simulation generates the controls and states of the helicopter as it executes the manoeuvre and the results may be used to calculate values of quickness, a parameter defined to measure responsiveness. Initial results reveal that in the context of inverse simulation quickness is independent of vehicle configuration when, as specified in the requirements, the quickness is based on the helicopter's kinematic states. An alternative quickness parameter, associated with the control displacements required to fly the manoeuvre is shown to be capable of discriminating between the pilot workload involved in flying two different configurations through the same manoeuvre.

Type
Research Article
Information
The Aeronautical Journal , Volume 101 , Issue 1007 , September 1997 , pp. 287 - 294
Copyright
Copyright © Royal Aeronautical Society 1997 

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References

1. ANON, Aeronautical Design Standard, Handling Qualities Requirements for Military Rotorcraft. ADS-33D, July 1994.Google Scholar
2. Ockier, C.J. Flight evaluation of the new handling qualities criteria using the Bol05, J Am Hel Soc, January 1996, 41, (6), pp 67–76.Google Scholar
3. Padfield, G.D., Charlton, M.D., Mace, T. and Morton, R. Flying qualities evaluation of the UK attack helicopter contenders using the ADS 33 methodology — clinical criteria & piloted simulation trials, Proceedings of the 21st European Rotorcraft Forum, St Petersburg, Russia, August 1995, pp IV2.1-2.20.Google Scholar
4. Cooper, G.E. and Harper, R.P. The use of pilot rating in the evaluation of aircraft handling qualities, NASA TN D-5153, April 1969.Google Scholar
5. Thomson, D.G. and Bradley, R. Development and verification of an algorithm for helicopter inverse simulation, Vertica, 14, (2), May 1990, pp 185–200.Google Scholar
6. Whalley, M.S. Development and evaluation of an inverse solution technique for studying helicopter maneuverability and agility, NASA TM 102889, July 1991.Google Scholar
7. Mckillip, R.M. and Perri, T.A. Helicopter flight control system design and evaluation for NOE operations using controller inversion techniques, Proceedings of the 45th Annual Forum of the American Helicopter Society, AHS, Boston, May 1989, pp 669–679.Google Scholar
8. Gao, C. and Hess, R.A. Inverse simulation of large-amplitude aircraft maneuvers, J Guid Cont and Dyn, 1993, 16, (4), pp 733–737.Google Scholar
9. Padfield, G.D. A theoretical model for helicopter flight mechanics for application to piloted simulation, Royal Aircraft Establishment, TR 81048, April 1981.Google Scholar
10. Thomson, D.G. Development of a Generic Helicopter Mathematical Model for Application to Inverse Simulation, University of Glasgow, Department of Aerospace Engineering, Internal Report No 9216, Glasgow, UK, June 1992.Google Scholar
11. Bradley, R., Padfield, G.D., Murray-smith, D.J. and Thomson, D.G. Validation of helicopter mathematical models, Trans Inst Meas Contr, 12, (4), 1990, pp 186–196.Google Scholar
12. Thomson, D.G. and Bradley, R. Validation of helicopter mathematical models by comparison of data from nap-of-the-Earth flight tests and inverse simulations, Proceedings of the 14th European Rotorcraft Forum, Milan, Italy, September 1988, pp 78.1-78.17.Google Scholar
13. Thomson, D.G. and Bradley, R. Prediction of the dynamic characteristics of helicopters in constrained flight, Aeronaut J, 1990, 94, (940), pp 344–354.Google Scholar
14. Padfield, G.D., Jones, J.P., Charlton, M.T., Howell, S.E. and Bradley, R. Where does the workload go when pilots attack manoeuvres? An analysis of results from flying qualities theory and experiment, Proceedings of the 20th European Rotorcraft Forum, Amsterdam, Paper 83, October 1994.Google Scholar
15. Thomson, D.G. and Bradley, R. Modelling and classification of helicopter combat manoeuvres, Proceedings of 17th ICAS Congress, Paper No ICAS-90-5.9.1, Stockholm, Sweden, September 1990.Google Scholar
16. Pausder, H.-J. and Blanken, C.L. Investigation of the effects of band-width and time delay on helicopter roll axis handling qualities, Proceedings of Piloting Vertical Flight Aircraft — A Conference on Flying Qualities and human Factors, NASA/AHS Specialists Meeting, San Francisco, January 1993.Google Scholar
17. Bradley, R., Sinclair, M., Jones, J.G. and Turner, G. Wavelet analysis of helicopter response to atmospheric turbulence in ride quality assessment, Proceedings of the 20th European Rotorcraft Forum, Amsterdam, Paper 75, October 1994.Google Scholar