Strength Matching Method of Face Gear Pair Considering Service Space Limitation to Improve Strength Performance. [PDF]
Materials (Basel), 2022 Chu X, Zeng H, Wang Y, Huang Y.
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Testing of UH-60A helicopter transmission in NASA Lewis 2240-kW (3000-hp) facility [PDF]
The U.S. Army's UH-60A Black Hawk 2240-kW (3000-hp) class, twin-engine helicopter transmission was tested at the NASA Lewis Research Center. The vibration and efficiency test results will be used to enhance the data base for similar-class helicopters ...
Coe, H. H. +2 more
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Hypoid spiral bevel gears – development, design limits and possibility to manufacturing on spiral bevel gears machine [PDF]
Mechanik, 2016 openaire +1 more source
Research on CNC machining technology of straight bevel gears based on hypocycloids. [PDF]
Sci RepTian C, Wang T, Tian Y, Zhang X.
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An analytical method for designing low noise helicopter transmissions [PDF]
The development and experimental validation of a method for analytically modeling the noise mechanism in the helicopter geared power transmission systems is described. This method can be used within the design process to predict interior noise levels and
Bossler, R. B., Jr. +2 more
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Study on the Wear Performance of 20CrMnTi Gear Steel with Different Penetration Gradient Positions. [PDF]
Materials (Basel)Zhang Y, Wei S, Yang W, Guan J, Li G.
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Results of NASA/Army transmission research [PDF]
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an interest in advancing the technology for helicopter propulsion systems. In particular, that portion of the program that applies to the drive train and its
Coe, Harold H. +2 more
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Data-Driven Multi-Objective Optimization Approach to Loaded Meshing Transmission Performances for Aerospace Spiral Bevel Gears. [PDF]
Materials (Basel)Zhou Z, Shao W, Tang J.
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Dynamic simulation of a motor longitudinally mounted on a centralized electric drive systems for pure electric vehicles under torque ripple and transmission error excitations. [PDF]
Sci Prog, 2023 Liao Z +5 more
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NASA transmission research and its probable effects on helicopter transmission design [PDF]
Transmissions studied for application to helicopters in addition to the more conventional geared transmissions include hybrid (traction/gear), bearingless planetary, and split torque transmissions. Research is being performed to establish the validity of
Coy, J. J. +2 more
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