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Evaluation of a load cell model for dynamic calibration of the rotor systems research aircraftThe Rotor Systems Research Aircraft uses load cells to isolate the rotor/transmission system from the fuselage. An analytical model of the relationship between applied rotor loads and the resulting load cell measurements is derived by applying a force-and-moment balance to the isolated rotor/transmission system. The model is then used to estimate the applied loads from measured load cell data, as obtained from a ground-based shake test. Using nominal design values for the parameters, the estimation errors, for the case of lateral forcing, were shown to be on the order of the sensor measurement noise in all but the roll axis. An unmodeled external load appears to be the source of the error in this axis.
Document ID
19860005834
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Duval, R. W.
(Advanced Rotorcraft Technology, Inc. Los Altos, Calif., United States)
Bahrami, H.
(NASA Ames Research Center Moffett Field, CA, United States)
Wellman, B.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1985
Publication Information
Publication: Rotorcraft Dynamics 1984
Subject Category
Aircraft Design, Testing And Performance
Accession Number
86N15304
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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