Results 101 to 110 of about 4,061 (184)

Design study of a continuously variable roller cone traction CVT for electric vehicles [PDF]

open access: yes
Continuously variable ratio transmissions (CVT) featuring cone and roller traction elements and computerized controls are studied. The CVT meets or exceeds all requirements set forth in the design criteria.
Mccoin, D. K., Walker, R. D.
core   +1 more source

Advanced Rotorcraft Transmission (ART) program [PDF]

open access: yes
Work performed by the McDonnell Douglas Helicopter Company and Lucas Western, Inc. within the U.S. Army/NASA Advanced Rotorcraft Transmission (ART) Program is summarized.
Bossler, Robert B., Jr.   +1 more
core   +1 more source

A Universal Method for Generating Straight Bevel Gears

open access: yesJixie chuandong, 1994
An universal method for’ generating straight bevel gears is put forward in this paper.The straight bevel gears with non-standard pressure angle may be generated by the standard planing tool with nominal pressure angle of 20°,the crowned teeth having a ...
Dong Xuezhu
doaj  

A computer solution for the dynamic load, lubricant film thickness and surface temperatures in spiral bevel gears [PDF]

open access: yes
A complete analysis of spiral bevel gear sets is presented. The gear profile is described by the movements of the cutting tools. The contact patterns of the rigid body gears are investigated. The tooth dynamic force is studied by combining the effects of
Chao, H. C., Cheng, H. S.
core   +1 more source

Finite element analysis using NASTRAN applied to helicopter transmission vibration/noise reduction [PDF]

open access: yes, 1975
A finite element NASTRAN model of the complete forward rotor transmission housing for the Boeing Vertol CH-47 helicopter was developed and applied to reduce transmission vibration/noise at its source.
Howells, R. W., Sciarra, J. J.
core   +1 more source

Study on Instantaneous Mesh Stiffness of Straight Bevel Gear

open access: yesJixie chuandong, 1995
本文以三维有限元方法对多齿对同时啮合的直齿圆柱齿轮轮齿变形和刚度进行了详尽分析研究。并利用SGDCS齿轮动态效应试验台进行了轮齿变形的激光测试,测试结果与计算结果的变化趋势具有稳定的一致性。该研究为齿形修整提供了依据;对齿轮动力学的其它领域,特别是进行振动及噪声分析都具有十分重要的意义。也为锥齿轮国标的制定和修改提供了参考。
李剑锋   +4 more
doaj  

Technology and benefits of aircraft counter rotation propellers [PDF]

open access: yes
Results are reported of a NASA sponsored analytical investigation into the merits of advanced counter rotation propellers for Mach 0.80 commercial transport application.
Bradley, E.   +4 more
core   +1 more source

渐开线直齿锥齿轮等距修形正交优化设计

open access: yesJixie chuandong, 2013
For the phenomenon of meshing interference,impact and end contact of spur bevel gear in working,the idea of orthogonal design for isometric modification is put forward,the principle of isometric modification and its manufacturing process is introduced.In
张方友, 崔焕勇
doaj  

A basis for solid modeling of gear teeth with application in design and manufacture [PDF]

open access: yes
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
core   +1 more source

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