NDLI: Study of turboprop systems reliability and maintenance costs

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Study of turboprop systems reliability and maintenance costs

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1978
Description	The overall reliability and maintenance costs (R&MC's) of past and current turboprop systems were examined. Maintenance cost drivers were found to be scheduled overhaul (40%), lack of modularity particularly in the propeller and reduction gearbox, and lack of inherent durability (reliability) of some parts. Comparisons were made between the 501-D13/54H60 turboprop system and the widely used JT8D turbofan. It was found that the total maintenance cost per flight hour of the turboprop was 75% higher than that of the JT8D turbofan. Part of this difference was due to propeller and gearbox costs being higher than those of the fan and reverser, but most of the difference was in the engine core where the older technology turboprop core maintenance costs were nearly 70 percent higher than for the turbofan. The estimated maintenance cost of both the advanced turboprop and advanced turbofan were less than the JT8D. The conclusion was that an advanced turboprop and an advanced turbofan, using similar cores, will have very competitive maintenance costs per flight hour.
File Size	15452329
Page Count	303
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19800005872
Archival Resource Key	ark:/13960/t11p2wm77
Language	English
Publisher Date	1978-06-01
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Service Life Propellers Gears Airline Operations Aircraft Maintenance Cost Estimates Reliability Analysis Turbofan Engines Turboprop Engines Engine Parts Modularity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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