Forum: Reliability & Maintainability Questions and Answers
Topic: Reliability & Maintainability Questions and AnswersTopic Posted by: Reliability & Maintainability Forum (firstname.lastname@example.org )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998
Original Message:Posted by: Dan Mahoney
Date posted: Thu Oct 12 12:37:21 US/Eastern 2000
Subject: Missile Reliability
Say an expensive fielded missile system has demonstrated its flight reliability goal after 50 flights, but then 20% of the missile is upgraded with a new subsystem. How many new flights must the system undergo to get back to its demonstrated reliability value? Another 50?, 20% of 50?, something else?!? Can you somehow use 80% of the past experience? What if only 1 tenth of 1 percent of the missile was changed? Would that change the requirement? Any insights or guidance would be appreciated.