This report presents a summary of the testing conducted during the development of a 3000-HP Roller Gear Transmission. During this program a helicopter transmission using a 19.85 reduction ratio roller gear transmission was designed, manufactured, and subjected to extensive testing. A reliability analysis shows that a fully developed roller gear transmission offers comparable reliability to a conventional two-stage planetary unit. However, relating the development testing of the roller gear transmission to project the reliability is premature at this stage. The analysis does show that on-condition maintenance of the roller gear transmission is feasible. A summary of the testing and development of the roller gear transmission is included. Detailed reports on the design, manufacture, and bench and aircraft testing have been published separately. (Author)
3000-HP Roller Gear Transmission Development Program. Volume VI. Reliability and Maintainability Report
1977
179 pages
Report
No indication
English
Aircraft , Jet & Gas Turbine Engines , Gears , Transmissions(Mechanical) , Helicopters , High velocity , Plane geometry , Reduction gears , Ratios , Helicopter engines , Helicopter rotors , Horsepower , Dynamic tests , Test facilities , Test equipment , Gear teeth , Reliability , Maintainability , Roller gear transmissions , UH-1 aircraft , CH-54A aircraft , S-61 aircraft , S-65 aircraft
3000-HP roller gear transmission development program, volume II. Design report
Tema Archive | 1975
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