The Sundstrand Power Systems T-62T-40-7 Gas Turbine Auxiliary Power Unit (APU) was adapted from an aircraft-borne APU to a marine application on the U.S. Navy’s Landing Craft Air Cushion (LCAC). Although the LCAC APU experienced less operating time than its aircraft version, the environmental conditions that exist cause unusual wear and component failures. Component and procedural improvements have been developed to extend the reliability of the T-62T-40-7 on board the LCAC.

Issue Section:
Gas Turbines: Marine
Topics:
Gas turbines, Aircraft, Failure, Power systems (Machinery), Reliability, Wear
1.
Naval Ships Warfare Center—Carderock Division, 1993, Preliminary Report of 1 Mar. 93, LCAC-37 Vibration Survey.
2.
Naval Air Warfare Center, 1992, Aircraft Division, Trenton, NJ, “Qualification of MIL-L-23699D Aircraft Engine Oil, Castrol Aerojet 5,” Final Report NAW-CADTRN-LR-PE-92-7, 3 Jan 92.
3.
Patterson, J., and Spring, S., 1992, “On-Line Detergent Washing: Reducing the Environmental Effects on the LCAC Gas Turbine Engines,” ASME Paper No. 92-GT-269.
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 by The American Society of Mechanical Engineers
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