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Design analysis for a nutating plate drive 4
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Author and Affiliation:
Loewenthal, S. H.(NASA Lewis Research Center, Cleveland, OH, United States);
Townsend, D. P.(NASA Lewis Research Center, Cleveland, OH, United States)
Abstract: A simplified design analysis was conducted on a nutating plate type drive system for a 2500 horsepower helicopter main rotor gear box. A drive system that split the output torque evenly between two nutating plates for the purpose of reducing the load on each nutating plate was analyzed. Needle bearings were used on the nutating plate pins. The results of the analysis indicate that the required load capacity of the pin bearings and the speed of the nutating plate bearings were beyond the state-of-the-art capacity of rolling-element bearings. The analysis further indicates that the nutating plate drive is less efficient, and results in a higher weight per horsepower than a conventional planetary helicopter transmission with similar design specifications.
Publication Date: Jan 01, 1972
Document ID:
19720020854
(Acquired Nov 22, 1995)
Accession Number: 72N28504
Subject Category: MACHINE ELEMENTS AND PROCESSES
Report/Patent Number: NASA-TM-X-68117, E-7050
Document Type: Technical Report
Publisher Information: United States
Meeting Information: Mech. Conf. and Intern. Symp. on Gearing and transmissions; 8-12 Oct. 1972; San Francisco
Meeting Sponsor: ASME;
AM. Gear MFR. Assoc.
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: HELICOPTERS; MECHANICAL DRIVES; NUTATION DAMPERS; ROTARY WINGS; SYSTEMS ANALYSIS; PERFORMANCE TESTS; ROLLER BEARINGS; SYSTEM EFFECTIVENESS
Imprint And Other Notes: Prosposed for presentation at Mech. Conf. and Intern. Symp. on Gearing and transmissions, San Francisco, 8-12 Oct. 1972; sponsored by ASME and AM. Gear MFR. Assoc.
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