Advanced Rotorcraft Transmission program - A status reportThe work being conducted under the first phase of the joint Army/NASA Advanced Rotorcraft Transmission program is reviewed. The work includes the selection of the Tactical Tilt Rotor (TTR) system and the development plans for assessing advanced component technologies. The TTR drive-system arrangement is outlined, and the comparisons and trade studies of self-aligning bearingless planetary, split torque, and conventional single-stage planetary configurations are presented. The effects of transmission improvements are evaluated, and component development testing is discussed, including noise reduction by active force cancellation, hybrid bidirectional tapered roller bearings, and precision net forged spur gears.
Document ID
19910045952
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Drago, Raymond J. (Boeing Helicopter Co. Philadelphia, PA, United States)
Lenski, Joseph W., Jr. (Boeing Helicopters Philadelphia, PA, United States)