Results 71 to 80 of about 3,279 (236)
Low-noise, high-strength, spiral-bevel gears for helicopter transmissions [PDF]
Improvements in spiral-bevel gear design were investigated to support the Army/NASA Advanced Rotorcraft Transmission program. Program objectives were to reduce weight by 25 percent, reduce noise by 10 dB, and increase life to 5000 hr mean-time-between ...
Handschuh, Robert F. +3 more
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Jixie chuandong, 2001 To counter complexity of spiral bevel gear geometry, this paper presents a mathematical model for calculating the steady bulk temperature field of spiral bevel gears based on the thermal transferring theory. Firstly, the mesh generation of finite element
沈允文 +4 more
doaj
Data Fusion Tool for Spiral Bevel Gear Condition Indicator Data [PDF]
Tests were performed on two spiral bevel gear sets in the NASA Glenn Spiral Bevel Gear Fatigue Test Rig to simulate the fielded failures of spiral bevel gears installed in a helicopter.
Antolick, Lance J. +3 more
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Precision Forging Technics and Precision Forging Machining Experiment of Driven Spiral Bevel Gear
Jixie chuandong, 2016 In actual gear manufacturing,there is a large part of spiral bevel gears with big transmission ratio,and its driven gear cone angle is larger than sixty degrees.
Zhang Hua +4 more
doaj
Mathematical models for the synthesis and optimization of spiral bevel gear tooth surfaces [PDF]
The geometry of spiral bevel gears and to their rational design are studied. The nonconjugate tooth surfaces of spiral bevel gears are, in theory, replaced (or approximated) by conjugated tooth surfaces.
Goldrich, R. N. +2 more
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Design of Spiral Bevel Gear Tooth Surface Topology
Jixie chuandong, 2019 The driving performance of low-noise and high-strength spiral bevel gears（include spiral bevel gear and cycloid bevel gear） is required to be improved by advanced equipment.
Chunshui Wu, Jing Deng, Chuang Jiang
doaj
Ideal spiral bevel gears: A new approach to surface geometry [PDF]
The fundamental geometrical characteristics of spiral bevel gear tooth surfaces are discussed. The parametric representation of an ideal spiral bevel tooth is developed based on the elements of involute geometry, differential geometry, and fundamental ...
Coy, J. J., Huston, R. L.
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A basis for solid modeling of gear teeth with application in design and manufacture [PDF]
A new approach to modeling gear tooth surfaces is discussed. A computer graphics solid modeling procedure is used to simulate the tooth fabrication process.
Huston, Ronald L. +3 more
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Jixie chuandong, 2008 The reasons that noise is brought by spiral bevel gear’s driving and the conflict of improving gear strength and reducing gear noise are analyzed,and the present methods in order to improve gear strength and reducing gear noise are dissussed.Based on the
杨宏斌, 张广杰, 梁桂明
doaj
Integrating Condition Indicators and Usage Parameters for Improved Spiral Bevel Gear Health Monitoring [PDF]
The objective of this study was to illustrate the importance of combining Health Usage Monitoring Systems (HUMS) data with usage monitoring system data when detecting rotorcraft transmission health.
Delgado, Irebert, R. +2 more
core +1 more source