This paper is a review of some of the research work of the NASA Lewis Research Center Mechanical Components Branch. It includes a brief review of the NASA Lewis Research Center and the Mechanical Components Branch. The research topics discussed are crack propagation of gear teeth, gear noise of spiral bevel and other gears, design optimization methods, methods we have investigated for transmission diagnostics, the analytical and experimental study of gear thermal conditions, the analytical and experimental study of split torque systems, the evaluation of several new advanced gear steels and transmission lubricants and the evaluation of various aircraft transmissions. The area of research needs for gearing and transmissions is also discussed
Improvements in spiral-bevel gear design were investigated to support the Army/NASA Advanced Rotorcr...
Advanced-design spiral-bevel gears were tested in an OH-58D helicopter transmission using the NASA 5...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advan...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command are involved in a joint re...
The NASA Lewis Research Center and the U.S. Army Research Laboratory are involved in a joint researc...
A joint research program, to advance the technology of rotorcraft transmissions, consists of analyti...
The results of the NASA gear research is reviewed as well as those programs which are presently bein...
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an ...
Highlighted here is that portion of the Lewis Research Center's helicopter propulsion systems progra...
A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Arm...
This is an expository report summarizing the research efforts and results under NASA Grant NSG-3188 ...
Transmissions studied for application to helicopters in addition to the more conventional geared tra...
Low-contact-ratio spur gears were tested in the NASA gear noise rig to study the noise radiated from...
A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Arm...
An experimental study to investigate the bending stress in aerospace-quality spiral bevel gears was ...
Improvements in spiral-bevel gear design were investigated to support the Army/NASA Advanced Rotorcr...
Advanced-design spiral-bevel gears were tested in an OH-58D helicopter transmission using the NASA 5...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advan...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command are involved in a joint re...
The NASA Lewis Research Center and the U.S. Army Research Laboratory are involved in a joint researc...
A joint research program, to advance the technology of rotorcraft transmissions, consists of analyti...
The results of the NASA gear research is reviewed as well as those programs which are presently bein...
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an ...
Highlighted here is that portion of the Lewis Research Center's helicopter propulsion systems progra...
A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Arm...
This is an expository report summarizing the research efforts and results under NASA Grant NSG-3188 ...
Transmissions studied for application to helicopters in addition to the more conventional geared tra...
Low-contact-ratio spur gears were tested in the NASA gear noise rig to study the noise radiated from...
A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Arm...
An experimental study to investigate the bending stress in aerospace-quality spiral bevel gears was ...
Improvements in spiral-bevel gear design were investigated to support the Army/NASA Advanced Rotorcr...
Advanced-design spiral-bevel gears were tested in an OH-58D helicopter transmission using the NASA 5...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advan...