Air resonance of an advanced bearingless rotor in forward flightThe air resonance of an advanced bearingless rotor in forward flight is investigated using a finite element formulation in space and time. The flexbeam, the torque tube, and the outboard blade are modeled as individual elastic beams, and the formulation includes five rigid body degrees of motion. It is shown that a large increase in stability is achieved by increased negative pitch-lag coupling arising from the vertical offset of the cuff restraint pin. It is also shown that body inertia has a significant effect on stability.
Document ID
19880064536
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jang, Jinseok (Maryland Univ. College Park, MD, United States)
Chopra, Inderjit (Maryland, University College Park, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Aircraft Design, Testing And Performance
Meeting Information
Meeting: International Conference on Rotorcraft Basic Research