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PROBABILISTIC APPROACH TO DETERMINING THE RESERVE FACTOR OF A HELICOPTER STRUCTURE AT VARIOUS LIFE CYCLE STAGES

卷 50, 册 4, 2019, pp. 453-459
DOI: 10.1615/TsAGISciJ.2019031659
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摘要

The AR 29 Aviation Requirements and ARCH 2 Airworthiness Requirements for Civilian Helicopters are compared in terms of the reserve factor. Based on guidance developed at TsAGI, a probabilistic principle of determining the reserve factor in the strength calculation of the structure of any aircraft, including a helicopter, is given. A method to determine the reserve factor in order to confirm the sufficiency of a helicopter's structural strength at the flight test stage is proposed.

参考文献
  1. Aviation Regulations, Part 29: Airworthiness Standards for Rotorcraft of Transport Category, accessed January 23, from http://aviadocs.com/docs/2003_AP_ch29.pdf, 2016.

  2. Selikhov, A.F. and Chizhov, V.M., Probabilistic Methods in Airplane Strength Computations, Moscow: Mashinostroenie, 240 pages, 1987 (in Russian).

  3. Mikhailov, S.A., Nedel'ko, D.V., Saltykov, S.V., and Shakirov, M.Z., A Probabilistic Approach to Improve the Reliability of Helicopter Designs with Adjustable Elements, TsAGI Sci. J, 47(4):449-456, 2016.

  4. Mil', M.L., Nekrasov, A.V., Braverman, A.S., Grodko, L.N., and Leikand, M.A., Helicopters: Computing and Designing. Book 2: Vibrations and Dynamic Strength, Moscow: Mashinostroenie, 1967 (in Russian).

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