Affiliation:
1. NASA Lewis Research Center, Cleveland, Ohio 44135
2. Propulsion Laboratory, AVRADCOM Research and Technology Laboratories, Lewis Research Center, Cleveland, Ohio 44135
Abstract
The results of a test program to evaluate a compact, high performance, fixed-ratio traction drive are presented. This transmission, the Nasvytis Multiroller Traction Drive, is a fixed-ratio, single-stage planetary with two rows of stepped planetrollers. Two versions of the drive were parametrically tested back-to-back at speeds to 73,000 rpm and power levels to 180 kW (240 hp). Parametric tests were also conducted with the Nasvytis drive retrofitted to an automotive gas turbine engine. The drives exhibited good performance, with a nominal peak efficiency of 94 to 96 percent and a maximum speed loss due to creep of approximately 3.5 percent.
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5 articles.
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