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Investigation of some parameters affecting the stability of a hingeless helicopter blade in hoverEquations of motion are used to investigate the effects of the choice of the mode shape and built-in coning angle on the stability boundaries of hingeless blades in hover. The results obtained indicate that the stability boundaries are dependent upon the mode shape to a considerable degree. It was also found that positive built-in coning is usually destabilizing while a negative amount of built-in coning can be quite stabilizing.
Document ID
19730007288
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Friedmann, P. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
September 2, 2013
Publication Date
August 1, 1972
Subject Category
Aircraft
Report/Patent Number
NASA-CR-114525
ASRL-TR-166-4
Accession Number
73N16015
Funding Number(s)
CONTRACT_GRANT: NAS2-6175
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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