RESEARCH PAPERS: Power Transmission and Gearing

Evaluation of a High Performance Fixed-Ratio Traction Drive

[+] Author and Article Information
S. H. Loewenthal, D. A. Rohn

NASA Lewis Research Center, Cleveland, Ohio 44135

N. E. Anderson

Propulsion Laboratory, AVRADCOM Research and Technology Laboratories, Lewis Research Center, Cleveland, Ohio 44135

J. Mech. Des 103(2), 410-417 (Apr 01, 1981) (8 pages) doi:10.1115/1.3254921 History: Received February 01, 1980; Online November 17, 2009


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.

Copyright © 1981 by ASME
Topics: Traction
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