A systems engineering design of a retirement for cause life management process for life-limited F110-GE-400 engine parts
çExtreme temperatures and high component rotational speeds within a gas turbine engine and design constraints limit engineers' ability to design all engine components to last for the expected service life of the engine. Under the United States Navy's current life management philosophy whe...
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| Format: | Dissertation |
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Virginia Tech
2014
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| Online Access: | http://hdl.handle.net/10919/41669 http://scholar.lib.vt.edu/theses/available/etd-03172010-020231/ |
| Summary: | çExtreme temperatures and high component rotational speeds within a
gas turbine engine and design constraints limit engineers' ability to design all
engine components to last for the expected service life of the engine. Under
the United States Navy's current life management philosophy where life-limited
engine parts are retired at their B. 1 life, over $210 million (1995
dollars) worth of parts will be replaced with new parts before system
retirement in 2010.</p>
<p>
Using the systems engineering process, the retirement for cause
methodology is adapted for use with and application to the Navy's F11O-GE-
400 engine. A preliminary retirement for cause system design is established,
and all life-limited parts are evaluated for participation in the system. A life-cycle
cost savings of $270 million is calculated for the four parts selected
for management via the established retirement for cause system. Further,
this life-cycle cost savings can be achieved with a maximum up-front
investment of $4.57 million over two years. Methods for decreasing the upfront
investment costs are discussed.</p>
<p>
The retirement for cause system defined herein is a feasible and cost
effective alternative to the Navy's current life management system for the
selected F110-GE-400 engine parts. Flight safety and readiness are shown
not to be degraded with implementation of the retirement for cause system.
Limitations of this study consists primarily of data non-availability.</p> === Master of Science |
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