Helicopter Transmission Research at NASA Lewis Research Center

Abstract : A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Army Aviation Systems command has existed since 1970. Program goals are to reduce weight and noise and to increase life and reliability. This paper reviews significant advances i technology for gears and transmissions and describes the experimental facilities at NASA Lewis for helicopter transmission testing. A description of each of the rigs is presented along with some significant results from the experiments.