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Helicopter Modelling

Published online by Cambridge University Press:  04 July 2016

Robert A. Ormiston
Robert A. Ormiston*
Affiliation:
Ames Directorate, US Army Air Mobility R&D Laboratory, Moffat Field, California
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Extract

I am pleased to have the honour of presenting the 18th Henson and Stringfellow Memorial Lecture. The subject of helicopter modelling is certainly appropriate because of the pioneering experiments that Henson and Stringfellow carried out with steam-powered plane models more than 50 years in advance of the Wright brothers. Although true powered flights were not quite achieved, these models were notable for excellence in overall design, the efficiency of their small steam engines, and their ultimate influence in later developments that culminated in the first successful aeroplane. Although not as well known, models were also extensively employed in the early development of the helicopter and have since become almost indispensable for advancing helicopter technology. The main emphasis of this lecture will be devoted to the diverse ways in which small-scale helicopter models are presently employed in advancing this technology. To best accomplish this objective, I have chosen specific examples of helicopter models to illustrate their versatility and wide range of application. The presentation of these models will also serve a secondary purpose—to demonstrate the advanced level of technology that now exists for producing these sophisticated and fascinating models.

Type
Supplementary Paper
Information
The Aeronautical Journal , Volume 77 , Issue 755 , November 1973 , pp. 579 - 591
Copyright
Copyright © Royal Aeronautical Society 1973 

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References

1. Ballantyne, A. M. and Pritchard, J. L. The Lives and Work of William Samuel Henson and John Stringfellow. The First Henson and Stringfellow Memorial Lecture. Journal of the Royal Aeronautical Society, Vol 60, PP. 363–401, June 1956.Google Scholar
2. Gibbs-Smith, C. H. Aviation: An Historical Survey. HMSO, London 1970.Google Scholar
3. De La Cierva, J. and Rose, D. Wings of Tomorrow—The Story of the Autogiro. Brewer, Warren & Putnam.Google Scholar
4. Kelley, B. Contributions of the Bell Helicopter Company to Helicopter Development. The Aeronautical Journal of the Royal Aeronautical Society, March 1972.Google Scholar
5. Culver, I. H. Progress of the Rigid Rotor Concept. The Aeronautical Journal of the Royal Aeronautical Society Vol 72, February 1968.Google Scholar
6. Burkam, J. E., Penni Helicopter. American Aircraft Modeler, January 1970.Google Scholar
7. Segel, R. M. and Fradenburgh, E. A. Develpment of the TRAC Variable Diameter Rotor Concept. Paper presented at the AIAA/AHS VTOL Research, Design, and Operations Meeting, AIAA Paper No 69-221, Atlanta, Georgia, February 1969.Google Scholar
8. Welkerson, J. B., Reader, K. R., and Linck, D. W. The Application of Circulation Control Aerodynamics to a Helicopter Rotor Model. Paper presented at the 29th Annual National Forum of the American Helicopter Society, Preprint No 704, Washington DC, May 1973.Google Scholar
9. Bridgman, P. W. Dimensional Analysis. Yale University Press, 1937.Google Scholar
10. Brooks, G. W. The Application of Models to Helicopter Vibration and Flutter Research. Proceedings of the Ninth Annual National Forum of the American Helicopter Society, May 1953.Google Scholar
11. Goland, L. On the Design of Models for Helicopter Research and Development. Aeronautical Engineering Laboratory. Report No 240, Princeton University, October 1953.Google Scholar
12. Fradenburgh, E. A., and Kiely, E. F. Development of Dynamic Model Rotor Blades for High Speed Helicopter Research. Paper presented at the Symposium on Aeroelastic and Dynamic Modelling Technology, Wright- Patterson Air Force Base, Ohio, September 1963.Google Scholar
13. Simons, I. A. Some Objectives and Problems Associated with Model Testing. The Aeronautical Journal of the Royal Aeronautical Society, Vol 74, July 1970.Google Scholar
14. Albrecht, C. O. Factor in the Design and Fabrication of Powered Dynamically Similar V/STOL Wind Tunnel Models. Paper presented at the American Helicopter Society Symposium on Status of Testing and Modelling Techniques for V/STOL Aircraft, Essington, Pennsylvania, October 1972.Google Scholar
15. Taylor, R., Juries, J. and MacDonald, H. I. Jr. Reduction of Helicopter Control System Loads With Fixed System Damping. Paper presented at the 29th Annual National Forum of the American Helicopter Society, Preprint No 733, Washington DC, May 1973 Google Scholar
16. Marr, R. L., and Neal, G. T. Assessment of Model Testing of a Tilt-Prop rotor VTOL Aircraft. Paper presented at the American Helicopter Society Symposium on Status of Testing and Modelling Techniques for V/STOL Aircraft, Essington, Pennsylvania, October 1972.Google Scholar
17. Halley, D. H. ABC Helicopter Stability, Control and Vibration Evaluation on the Princeton Dynamic Model Track. Paper presented at the 29th Annual National the American Helicopter Society, Preprint No 744, Washington, DC, May 1973.Google Scholar
18. Ormiston, R. A. and Peters, D. A. Hingeless Rotor Response with Non-uniform Inflow and Elastic Blade Bending. Journal of Aircraft, Vol 9, No 10, October 1972.Google Scholar
19. Kuczynski, W. A., Sharpe, D. L., and Sissingh, G. J. Hingeless Rotor—Experimental Frequency Response and Dynamic Characteristics with Hub Moment Feedback Controls. Paper presented at the 28th Annual National Forum of the American Helicopter Society, Preprint No 612, Washington DC, May 1972.Google Scholar
20. Ormiston, R. A., and Bousman, W. G. A Study of Stall-Induced Flap-Lag Instability of Hingeless Rotors. Paper presented at the 29th Annual National Forum of the American Helicopter Society, Preprint No 730, Washington DC, May 1973.Google Scholar
21. Hohenemser, K. H. and Crews, S. T. Model Tests on Unsteady Rotor Wake Effscts. Journal of Aircraft, Vol 10, No 1, January 1973.Google Scholar
22. Crews, S. T., Hohenemser, K. H., and Ormiston, R. A. An Unsteady Wake Model for a Hingeless Rotor. To be published in the Journal of Aircraft. Google Scholar
23. McCroskey, W. J. and Fischer, R. K. Jr. Detailed Aerodynamic Measurements on a Model Rotor in the Blade Stall Regime. Journal of the American Helicopter Society, Vol 17, No 1, January 1972.Google Scholar