Virtual Bookstore Citation Title APPROXIMATIONS TO THE RELIABILITY OF PHASED MISSIONS. Author(s) Ziehms,Harald ; Corporate Author(s) NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF Report Date 9/1/1975 Page Count 33 Abstract A system whose configuration (block diagram or fault tree) changesduring consecutive time periods (phases) performs a 'phased mission.' Recently,Esary and Ziehms have shown that any multi-phase mission can be transformed intoan equivalent, synthetic, single-phase system, and thus that the phased missionproblem can in principle be solved by standard reliability methods. The authoremploys these ideas here to study approximations to mission reliability and todevelop an algorithm which may be of practical interest. In addition, he extendsthe reliability calculus of Rubinstein, and Esary and Hayne, based on anapproximate hazard transform, to phased missions. It is shown how this extendedcalculus can be used in situations where phases are not of known fixed duration. Price: Available from National Technical Information Service (NTIS). http://www.ntis.gov   Prices are plus sales tax when purchased within New York State and shipping charges, if applicable