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The changing scene of structural airworthiness

Published online by Cambridge University Press:  04 July 2016

W. G. Heath
W. G. Heath*
Affiliation:
British Aerospace Aircraft Group, Manchester Division
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Extract

‘Now here, you see, it takes all the running you can do to keep in the same place’

Lewis Carroll:Through the Looking Glass

There are many examples in his two Alice books where Lewis Carroll, perhaps unwittingly, provides analogies with the world of reality. The lines quoted above are often used to portray the rapidly changing scenario in which we struggle to maintain the status quo of our social and political lives. The same is true in the world of structures: the scenario continually shifts as we discover new hazards which threaten our products. Aircraft speeds have increased, operators have demanded longer service lives, new materials have been introduced with their own susceptibilities, and so we must develop more comprehensive design requirements and better design techniques to ensure that each new aircraft maintains the existing standards of airworthiness—or at least the standards we imagine to exist.

Type
Research Article
Information
The Aeronautical Journal , Volume 84 , Issue 831 , April 1980 , pp. 81 - 92
Copyright
Copyright © Royal Aeronautical Society 1980 

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References

1. Mcfarland, M. W. (Editor). The Papers of Wilbur and Orville Wright. McGraw Hill, 1953.Google Scholar
2. Handbook of Strength Calculations AP 970. HMSO, 1928.Google Scholar
3. Design Requirements for Aircraft for the Royal Air Force and Royal Navy AvP 970. HMSO, 1935.Google Scholar
4. Grinsted, F. Suggested changes in the design basis for structural airworthiness of military aircraft. RAE Tech Note Structures 38, June 1949.Google Scholar
5. Mangurian, G. N. IS the present aircraft structural factor of safety realistic? Aeronautical Engineering Review p 63, September 1954.Google Scholar
6. Heath, W. G. Factors of safety—should they be reduced? AGARD-R-661, p 15, November 1977.Google Scholar
7. Montagnon, P. E. The case for factors of safety of 1·5 instead of 2·0, with special reference to the flight envelope. R & M 2578, January 1944.Google Scholar
8. Shanley, F. R. Historical note on the 1·5 factor of safety for aircraft structures. J Aero Sci, Vol 29, No 2, p 243, February 1967.Google Scholar
9. Struck, H. Factor of safety/limit load concept—maximum load concept. AGARD-R-661, p 1, November 1971.Google Scholar
10. Walker, P. B. Rational stressing cases for symmetric flight. R & M 1916, October 1944.Google Scholar
11. Harper, R. H. T. The Fifth Halford Memorial Lecture. The Aeronautical Journal of the RAeS, Vol 70, p 477, April 1966.Google Scholar
12. Muller, G. E. and Schmid, C. J. Factor of safety—USAF design practice. AGARD-R-661, p 27, November 1977.Google Scholar
13. Pugsley, A. G. A philosophy of aeroplane strength factors. R & M 1906, September 1942.Google Scholar
14. Hooke, F. H. A new look at structural reliability and risk theory. AIAA Journal, Vol 17, No 9, p 980, September 1979.Google Scholar
15. Vann, F. W. Loading actions from the designer's viewpoint. RAE TR 67166, p 33, July 1967.Google Scholar
16. Howard, H. B. The graphical and analytical determination of stresses in single span and continuous beams under end compression and lateral load with variations in shear, distributed load and moment of inertia. R & M 1233, June 1928.Google Scholar
17. Argyris, J. H. and Dunne, P. C. The general theory of cylindrical and conical tubes under torsion and bending loads. The Aeronautical Journal of the RAeS, Vol 51, pp 199, 757 & 884 February, September and November 1948. Vol 53, pp 461 & 558, May and June 1949.Google Scholar
18. Argyris, J. H. and Kelsey, S. Energy Theorems and Structural Analysis. (Reprinted from Aircraft Engineering). Butterworths 1960.Google Scholar
19. Tye, W. What are loading actions? RAE TR 67166, p 15, October 1966.Google Scholar
20. Frazer, R. A. and Duncan, W. J. The flutter of aeroplane wings. R& M 1155, August 1928.Google Scholar
21. Frazer, R. A. and Duncan, W. J. The flutter of monoplanes, biplanes and tail units. R & M 1255, January 1931.Google Scholar
22. Bairstow, L. and Page, A. Torsional vibrations on the tail of an aeroplane. R & M 276, 1916.Google Scholar
23. Pugsley, A. G. Control surface and wing stability problems. The Aeronautical Journal of the RAeS, Vol 41, p 975, November 1937.Google Scholar
24. Cox, H. R. Problems involving the stiffness of aeroplane wings. The Aeronautical Journal of the RAeS, Vol 38, p 73, February 1934.Google Scholar
25. Pugsley, A. G. The influence of wing density upon wing flutter. R & M 1946, June 1932.Google Scholar
26. Collar, A. R. The expanding domain of aeroelasticity. The Aeronautical Journal of the RAeS, Vol 50, p 613, August 1946.Google Scholar
27. Collar, A. R. The first fifty years of aeroelasticity. Aerospace, Vol 5, No 2, p 12, February 1978.Google Scholar
28. Heath, W. G. The computer and the stress office; ten years' experience. RAE TR 66239, July 1966.Google Scholar
29. Howard, H. B. Aircraft structures. The Aeronautical Journal of the RAeS, Vol 70, p 54, January 1966.Google Scholar
30. Tye, W. Gusts. The Aeronautical Journal of the RAeS, Vol 51, p 721, 1947.Google Scholar
31. British civil airworthiness requirements Section D—Aeroplanes. CAA London.Google Scholar
32. Sturgeon, J. R. Operational research on loading actions. RAE TR 67166, p 119, October 1966.Google Scholar
33. Sturgeon, J. R. Operational data acquisition and analysis for monitoring of military aircraft usage. The Aeronautical Journal of the RAeS, Vol 82, p 218, May 1978.Google Scholar
34. Heywood, R. B. Correlated fatigue data for aircraft structural joints. RAE Report Structures 184, June 1955.Google Scholar
35. The failure of metals by fatigue. Proc Symposium Melbourne University, December 1946, Melbourne Univ Press, 1947.Google Scholar
36. Miner, M. A. Cumulative damage in fatigue. J App Mech, Vol 12, No 3, pA–159, September 1945.Google Scholar
37. Walker, P. B. Fatigue of aircraft structures. The Aeronautical Journal of the RAeS, Vol 53, p 763, August 1949.Google Scholar
38. Williams, K. Fatigue life of wing components for civil aircraft. The Aeronautical Journal of the RAeS, Vol 56, p 842, November 1952.Google Scholar
39. Raithby, K. D. A method of estimating the permissible fatigue life of the wing structure of a transport aircraft. The Aeronautical Journal of the RAeS, Vol 65, p 729, November 1961.Google Scholar
40. Average gust frequencies. RAeS Data Sheet L.01.01., June 1958.Google Scholar
41. Heath-Smith, J. Turbulence encountered by Comet I aircraft. ARC CP 248,1956.Google Scholar
42. Heath-Smith, J. Turbulence encountered by Viking aircraft over Europe. ARC CP 311, 1957.Google Scholar
43. Heath-Smith, J. Atmospheric turbulence encountered by Hermes aircraft. ARC CP 334,1957.Google Scholar
44. Lederer, J. Infusion of safety into aeronautical engineering curricula. Proc Third Anglo-American Conference, Brighton 1951, p 25.Google Scholar
45. Hart, I. B. The World of Leonardo da Vinci. Macdonald, London 1961.Google Scholar
46. Harpur, N. F. Fail safe structural design. The Aeronautical Journal of the RAeS, Vol 62, p 363, May 1958.Google Scholar
47. Griffith, A. A. The phenomena of rupture and flow in solids. Phil Trans Roy Soc, Vol A221, 1921.Google Scholar
48. Eftis, J., Jones, D. L. and Liebowitz, H. Basic concepts in fracture mechanics. AGARDograph No 176, p 32, January 1974.Google Scholar
49. Sih, G. C. Handbook of Stress Intensity Factors. Lehigh University, 1973.Google Scholar
50. Rooke, D. P. and Cartwright, D. J. Compendium of Stress Intensity Factors. HMSO, 1976.Google Scholar
51. Paris, P. C. The growth of cracks due to variations in load. Dissertation, Lehigh University, 1960.Google Scholar
52. Airplane damage tolerance requirements. MIL-A-83444 (USAF), July 1974.Google Scholar
53. Kirkby, W. T. A comparison of design stress levels for structural components designed on ‘safe-life’ and on ‘damage tolerant’ principles. ARC 37588, January 1978, (Unpublished).Google Scholar
54. Heath, W. G. A fresh look at the fail safe philosophy. ARC 37583, January 1978, (Unpublished).Google Scholar
55. Continuing structural integrity of transport aeroplanes. CAA Airworthiness Notice, No 89, August 1978.Google Scholar
56. Maintenance Review Board. FAA Advisory Circular, No 121-22, December 1977.Google Scholar
57. W. G., Heath Fail safe? Tech Air, Vol 36, No 11, p 1, November 1979, and Vol 36, No 12, p 12, December 1979.Google Scholar
58. Hill, G. T. R. Advances in aircraft structural design. Proc Third Anglo-American Conference, p 1 ,1951.Google Scholar
59. Gordon, J. E. Plastics and plastic structures. Proc Third Anglo-American Conference, p 177, 1951.Google Scholar
60. Gordon, J. E. On the present and potential efficiency of structural plastics. The Aeronautical Journal of the RAeS Vol 56, p 704, September 1952.Google Scholar
61. W., Johnson, Phillips, L. N. and W., Watt The production of carbon fibre. British Patent Spec 1,110,791, February 1968.Google Scholar
62. Albericci, P. Improvements in or relating to the production of fibre reinforced synthetic resin articles. British Patent Spec 1,441,919, July 1976.Google Scholar
63. Heath, W. G. Carbon fibre composites—promises and problems. AGARD-CP-112, p 6-1, May 1973.Google Scholar
64. Report of the working party on carbon fibre composite materials. ARC 33530, April 1972, (Unpublished).Google Scholar
65. Goodman, J. W., Lincoln, J. W. and Bennett, T. H. The Air Force Structural Integrity Program for Advanced Composite Structures. AIAA/ASME Symposium on Aircraft Composites, San Diego, March 1977.Google Scholar
66. Recommendations for the environmental testing of carbon fibre composites for aircraft. Report HSA-MSM-GEN-0415 (unpublished), September 1978.Google Scholar