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Materials for helicopter gearsSome of the power train transmission gears in helicopter drive systems can become critical components as performance requirements are increased; accordingly, increasing attention must be paid to new alloys in order to obtain required performance reliability and survivability. Candidate advanced alloys, with improved high temperature properties, while increasing the resistance to scoring and scuffing, tend to have lower ductility and fracture toughness. An attempt is made to identify design materials, and process problems and requirements. In addition, it is recommended that the characterization of candidate steels be accelerated; preliminary investigation indicates that new alloys may provide improved capability against surface distress.
Document ID
19800016828
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Date Acquired
September 4, 2013
Publication Date
October 1, 1979
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
PB80-153463
NASA-CR-163068
NMAB-351
Accession Number
80N25323
Funding Number(s)
CONTRACT_GRANT: MDA903-78-C-0038
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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