Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-26T05:47:01.774Z Has data issue: false hasContentIssue false

Future advanced technology rotorcraft

Published online by Cambridge University Press:  04 July 2016

M. V. Lowson
Affiliation:
Westland Helicopters Ltd, Yeovil, England
D. E. H. Balmford
Affiliation:
Westland Helicopters Ltd, Yeovil, England

Extract

The ability of the helicopter to hover and therefore to take-off and land in confined areas has proven to be of significant value in an increasing range of applications. Rotorcraft have now established a significant role for specialist aeronautical applications both in the civil and military field.

Figure 1(a) shows a graph of the increase of helicopter usage in the civil market. To the traditional roles of point to point transport and special purpose public service operations has been added a massive increase in energy related use, particularly for off-shore oil exploration. Present fleet growth rate in the civil area is about 15% p.a. There is no sign that this demand will abate. There has also been a substantial increase in helicopter use on military operations, as illustrated in Fig. 1(b). Helicopters now account for between 40–50% of all service aircraft (excluding training and liaison) in both the United States and Britain. The flexibility offered by the helicopter has been critical in its tactical value for land operations. The ability of the helicopter to operate from small ships at sea in all weathers, and at night, has provided it with a unique role in naval applications. In Britain over 80% of naval aircraft are now helicopters.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1980 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

*

Chief Scientist, Member AIAA.

Deputy Chief Engineer Research.

References

1. Hafner, R. Quo Vadimus. AGARD meeting on Fluid Dynamics of fan supported aircraft. September 1967.Google Scholar
2. Cook, C. V. A review of tail rotor design and performance. ARC 38029, October 1978. (To be published in Vertica.)Google Scholar
3. Vorsteen, L. F. Composite structures for commercial transport aircraft. NASA TM 78730, June 1978.Google Scholar
4. Mayerjak, R. J. and Singley, G. T. III, Composite rotor hub. J Amer Hel Soc. Vol 23, pp 1017, October, 1978.Google Scholar
5. Lowson, M. V., Hawkings, D. L., Byham, G. M. and Perry, F. J. Helicopter rotor blades. US Pat 4077741, May 1975.Google Scholar
6. Beddoes, T. S. Onset of leading edge separation affects under dynamic conditions and low Mach number. Amer Hel Soc Forum 78-63, May 1978.Google Scholar
7. McHugh, F. J. What are the lift and propulsive forces at high speed for the conventional rotor. Amer Hel Soc Forum 78-2, May 1978.Google Scholar
8. McLaughlin, A., Venn, G. M. and Barnard, A. J. A vibration study of the Lynx airframe using the finite element method. 3rd Euro Rotorcraft Forum Paper 21, September 1977.Google Scholar
9. Leverton, J. W. Discrete frequency rotor noise. Prog Astro Aero, Vol 144, pp 559582, 1975.Google Scholar
10. Hawkings, D. J. and Lowson, M. V. Tone noise of highspeed rotors. Prog Astro Aero, Vol 44, pp 538558, 1975.Google Scholar
11. Panyalev, G. Mig 21 bis and F16A air combat potential: a comparison. Inter Def Rev, Vol 9, pp 14291434, 1978.Google Scholar
12. Lewis, R. B. II, Huey-Cobra manoeuvring investigation. 26th Amer Hel Soc Forum, 1968.Google Scholar
13. Lindenbaum, B. and Farga, D. E. A review of the US in service VSTOL programmes. Paper III AGARD Symposium on Rotorcraft.Google Scholar