NDLI: Structural dynamics, stability, and control of helicopters (Document No: 19780022196)

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Structural dynamics, stability, and control of helicopters (Document No: 19780022196)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Meirovitch, L. Hale, A. L.
Copyright Year	1978
Description	The dynamic synthesis of gyroscopic structures consisting of point-connected substructures is investigated. The objective is to develop a mathematical model capable of an adequate simulation of the modal characteristics of a helicopter using a minimum number of degrees of freedom. The basic approach is to regard the helicopter structure as an assemblage of flexible substructures. The variational equations for the perturbed motion about certain equilibrium solutions are derived. The discretized variational equations can be conveniently exhibited in matrix form, and a great deal of information about the system modal characteristics can be extracted from the coefficient matrices. The derivation of the variational equations requires a monumental amount of algebraic operations. To automate this task a symbolic manipulation program on a digital computer is developed.
File Size	1420965
Page Count	56
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19780022196
Archival Resource Key	ark:/13960/t5t776m3p
Language	English
Publisher Date	1978-07-01
Access Restriction	Open
Subject Keyword	Aircraft Stability And Control Dynamic Structural Analysis Structural Stability Helicopters Gyroscopic Stability Analysis Mathematics Mathematical Models Computer Programs Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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