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AGBT Advanced Counter-Rotating Gearbox Detailed Design ReportAn Advanced Counter-Rotating (CR) Gearbox was designed and fabricated to evaluate gearbox efficiency, durability and weight characteristics for emerging propfan-powered airplanes. Component scavenge tests showed that a constant volume collector had high scavenge effectiveness, which was uneffected by added airflow. Lubrication tests showed that gearbox losses could be reduced by controlling the air/oil mixture and by directing the oil jets radially, with a slight axial component, into the sun/planet gears.
Document ID
19940005945
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Howe, D. C. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Sundt, C. V. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Mckibbon, A. H. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1988
Subject Category
Mechanical Engineering
Report/Patent Number
NAS 1.26:180883
NASA-CR-180883
Accession Number
94N10400
Funding Number(s)
PROJECT: RTOP 535-03-22
CONTRACT_GRANT: NAS3-24342
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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