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User's Manual for Computer Program ROTORA detailed description of a computer program to calculate tilt-rotor aircraft dynamic characteristics is presented. This program consists of two parts: (1) the natural frequencies and corresponding mode shapes of the rotor blade and wing are developed from structural data (mass distribution and stiffness distribution); and (2) the frequency response (to gust and blade pitch control inputs) and eigenvalues of the tilt-rotor dynamic system, based on the natural frequencies and mode shapes, are derived. Sample problems are included to assist the user.
Document ID
19750006653
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Yasue, M. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Date Acquired
September 3, 2013
Publication Date
August 1, 1974
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-137553
ASRL-TR-174-2
Accession Number
75N14725
Funding Number(s)
CONTRACT_GRANT: NAS2-7262
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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