Approximations to the reliability of phased missions
By: by Harald Ziehms
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1975
Place of publication: Monterey, California
Language: eng
Number of pages: 29
Subjects: Systems engineering; System analysis
Description: A system whose configuration (block diagram or fault tree) changes during consecutive time periods (phases) performs a 'phased mission.' Recently, Esary and Ziehms have shown that any multi-phase mission can be transformed into an equivalent, synthetic, single-phase system, and thus that the phased mission problem can in principle be solved by standard reliability methods. The author employs these ideas here to study approximations to mission reliability and to develop an algorithm which may be of practical interest. In addition, he extends the reliability calculus of Rubinstein, and Esary and Hayne, based on an approximate hazard transform, to phased missions. It is shown how this extended calculus can be used in situations where phases are not of known fixed duration.
Notes: Title from cover.

"NPS55Ey75091"--Cover.

"September 1975"--Cover.

Includes bibliographical references (p. 28).

"Approved for public release; distribution is unlimited"--Cover.

Technical report; 1975.

ck/ 7/30/09.