Design Considerations for Bearingless Rotor Hubs
Abstract
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 hubs were examined, particularly with respect to bearingless-rotor designs. This paper summarizes the critical aspects of bearingless-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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1983
- Accession Number
- ADA131660
Entities
People
- Paul H. Mirick
- Robert A. Ormiston
- William G. Bousman