Spiral bevel and circular arc helical gears: Tooth contact analysis and the effect of misalignment on circular arc helical gears [PDF]
A computer aided method for tooth contact analysis was developed and applied. Optimal machine-tool settings for spiral bevel gears are proposed and when applied indicated that kinematic errors can be minimized while maintaining a desirable bearing ...
Coy, J. J. +4 more
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Tooth profile analysiis of circular-cut, spiral-bevel gears [PDF]
An analysis of tooth profile changes in the transverse plane of circular-cut, spiral-bevel crown gears is presented. The analysis assumes a straight-line profile in the mid-transverse plane.
Coy, J. J., Huston, R. L., Lin, Y.
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FAULT DIAGNOSIS OF SPIRAL BEVEL GEAR BASED ON LOCAL BISPECTRUM AND CONVOLUTIONAL NEURAL NETWORK (MT)
Jixie qiangdu, 2022 Aiming at the problem that the traditional fault diagnosis method has a low efficiency for spiral bevel gear fault diagnosis, a fault diagnosis method based on local bispectrum and convolution neural network（CNN） is proposed. By using local bispectrum of
YANG DaLian, LEI JiaLe, JIANG LingLi
doaj
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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Research of Tooth Cutting Theory and Milling Test on Small Module Spiral Bevel Gear
Jixie chuandong, 2020 The processing of traditional small module spiral bevel gears is duplex spread-blade method， on the specialized gear milling machine. The gear and pinion are generated normally by the method of duplex， which has high processing efficiency， but the ...
Bingyi Chui, Hua Zhang, Jianjun Yang
doaj
Computational gearing mechanics [PDF]
This is an expository report summarizing the research efforts and results under NASA Grant NSG-3188 to the University of Cincinnati. Since the grant has now ended this report also serves as a final report for the grant. The focus of the research has been
Huston, Ronald L.
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Developmental Summarization of Gleason Spiral Bevel Gear
Jixie chuandong, 2017 The spiral bevel gear is one of the most important and complicated transmission gear with large load carrying capacity and smooth transmission,it is widely applied in the aviation and spaceflight and automobile industry. The theoretic study and manufacturing level are the important symbol of one country’s mechanical industry level.
Li Yao, Zhao Shaofu, Liu Zhiqiang
openaire +1 more source
Development of a full-scale transmission testing procedure to evaluate advanced lubricants [PDF]
Experimental tests were performed on the OH-58A helicopter main rotor transmission in the NASA Lewis 500-hp Helicopter Transmission Test Stand. The testing was part of a joint Navy/NASA/Army lubrication program.
Decker, Harry J. +2 more
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Precision of spiral-bevel gears [PDF]
The kinematic errors in spiral bevel gear trains caused by the generation of nonconjugate surfaces, by axial displacements of the gears during assembly, and by eccentricity of the assembled gears were determined. One mathematical model corresponds to the
Coy, J. J. +3 more
core +1 more source
Identification and proposed control of helicopter transmission noise at the source [PDF]
Helicopter cabin interiors require noise treatment which is expensive and adds weight. The gears inside the main power transmission are major sources of cabin noise.
Coy, John J. +6 more
core +2 more sources