Minimax Reliability of Aircraft and Airline

Abstract

Development of inspection program for limitation of fatigue failure probability (FFP) of fatigueprone aircraft (AC) and fatigue failure rate (FFR) of airline (AL) is a problem of high priority. This problem is aggravated by stringent limitation of number of full-scale fatigue tests (only one or two airframe are tested). In previous authors publications [1-2] minimax solution of the problem was offered in assumption that in exponential approximation of fatigue crack size growth function, a(t) = a0 exp(Qt), only one parameter of fatigue crack trajectory (PFCT) is unknown. Here we consider the case of two unknown parameters