Approach taken by Westland Aircraft Ltd to prevent many defects persisting through development period and causing unreliability in service; summary of Wessex Mk. 1 helicopter development program with regard to transmission, controls, rotors and mechanisms, and complete aircraft shows importance of development testing; growth of overhaul period begins with experience accumulated by strip examination of number of components on completion of initial overhaul period; average achieved life and mean time between failures; establishment of failure probability requirement.
Engineering reliability of shaft-driven helicopters
Roy Aeronautical Soc -- J
Royal Aeronautical Society -- Journal ; 67 , n 632
1963
14 pages
Article (Journal)
English
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