Five studies were performed under contract for concept definition of the Integrated Technology Rotor/Flight Research Rotor (ITR/FRR) Project. The purpose of these studies was to examine numerous hub design concepts with the potential of meeting the technical goals and specifications set for the ITR/FRR. Thirty-three concepts were proposed, including 21 bearingless designs. Although the level of effort in these studies was not equivalent to a preliminary design, many important design issues for advanced rotor nubs were examined, particularly with respect to bearingless-rotor designs. This papersummarizes the critical aspects of bearing less-hub design; they include the design of the flexbeam, the design of a torque structure for pitch control, and the means of augmenting rotor lead-lag damping. Representative designs from the concept definition studies are used to illuminate these design aspects. The capability of the designs to meet the ITR/FRR technical goals is also discussed.
Design considerations for bearingless rotor hubs
Entwurfsbetrachtungen fuer lagerlose Rotornaben
US Government Reports ; 1-28
1983
28 Seiten
Report
English
AIRCRAFT GIMBAL FOR BEARINGLESS GIMBALED ROTOR HUBS AND SWASHPLATES
European Patent Office | 2021
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