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A Study of the Spectral Gust Alleviation Factor

Published online by Cambridge University Press:  04 July 2016

E. Huntley
E. Huntley*
Affiliation:
University of Sheffield
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Extract

A great deal of research effort is going into the measurement of turbulent air velocities in relation to aircraft flight. There is a continuing need to review our knowledge of aircraft responses to air turbulence in order to appreciate the significance of the new information as it becomes available and in order to demonstrate which parameters in the problem are of most importance and therefore deserving of the closest study.

At the present stage of aircraft development we can see dramatic changes in aircraft speed, size and shape. Increased aircraft size, speed and height of operation imply larger values of the gust mass parameter μg than hitherto; they also mean that structural flexibility is becoming increasingly significant. Change of shape towards the slender configuration involves us not only in new appraisals of aircraft aerodynamics, steady and unsteady, but also in different modes of structural distortion from those typical of current subsonic turbojet transport aircraft.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 75 , Issue 730 , October 1971 , pp. 722 - 735
Copyright
Copyright © Royal Aeronautical Society 1971 

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References

1. Zbrozek, J. K. Gust alleviation factor. ARC R & M 2970, 1953.Google Scholar
2. Fung, Y. C. Statistical aspects of dynamic loads. Jour Aero Sci, Vol 20, No 5, 1953.Google Scholar
3. Press, H. et al, A re-evaluation of data on atmospheric turbulence and airplane gust loads for application in spectral calculations. NACA Rep. 1272, 1956.Google Scholar
4. Zbrozek, J. K. Longitudinal response of aircraft to oscillatory vertical gusts. RAE Rep Aero 2559, 1955.Google Scholar
5. Zbrozek, J. K. A study of die longitudinal response of aircraft to turbulent air. RAE Rep Aero 2530, 1955.Google Scholar
6. Pratt, K. G. and Bennett, F. V. Charts for estimating the effects of short period stability characteristics on air plane vertical acceleration and pitch angle response in continuous atmospheric turbulence. NACA TN 3992, 1957.Google Scholar
7. Diederich, F. W. The response of an aircraft to random atmospheric disturbances. NACA Rep 1345, 1958.Google Scholar
8. Etkin, B. A theory of the response of airplanes to random atmospheric turbulence. J Aerospace Sci, Vol 26, No 7, 1959.Google Scholar
9. Atmospheric turbulence and its relation to aircraft. Proceedings of a symposium at the RAE, Farnborough 1961, HMSO.Google Scholar
10. Hall, J. C. A re-analysis of existing gust data using the power spectrum technique. Symposium, Hatfield College of Technology, 1962.Google Scholar
11. Taylor, J. Manual on aircraft loads. AGARDograph 83, 1964.Google Scholar
12. Huntley, E. The longitudinal response of a flexible slender aircraft to random turbulence. ARC R & M 3454, 1964.Google Scholar
13. Houbolt, J. C. et al, Dynamic response of airplanes to atmospheric turbulence including flight data on input and response. NASA TR R-199, 1964.Google Scholar
14. Zbrozek, J. K. Atmospheric gusts. Journal Royal Aero nautical Society, Vol 69, 1965.Google Scholar
15. Huntley, E. A matrix formulation for the time response of time-invariant linear systems to discrete inputs. Int J Control, Vol 4, No 1, 49–72, 1966.Google Scholar
16. Huntley, E. Matrix methods for the analytic determin ation of the output autocorrelation functions of linear systems for stationary random inputs. Parts I and II. RAE TR 66387. 1966 (Published Int J Control, Vol 10, No 1, DP 1–27. 1969.)Google Scholar
17. Hazelwood, L. and Huntley, E. Algol programmes for the response analysis of linear systems with deter ministic or random inputs. (ARC CP 1124. July 1969.)Google Scholar
18. Fuller, A. T. The replacement of saturation constraints by energy constraints in control optimization theory. Int J Control, Vol 6. No 3, 1967.Google Scholar
19. Bisplinghoff, R. L. et al, Aeroelasticity. Addison-Wesley, 1955.Google Scholar
20. Huntley, E. Spectral gust alleviation factor. RAE Tech nical Report 68182, July 1968.Google Scholar