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Contribution to the Calculation of the Linear and Non-Linear Behaviour of Hingless Rotor Blades with Uneven Blade Properties - A Simple Calculation Tool.

Büter, A. and Ehlert, U.-C. and Nitzsche, F. (2001) Contribution to the Calculation of the Linear and Non-Linear Behaviour of Hingless Rotor Blades with Uneven Blade Properties - A Simple Calculation Tool. In: 27th European Rotorcraft Forum, Proceedings CD, 1, 30-1-30-10. 27. European Rotorcraft Forum, Moskau, Russia, Sept. 2001.

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Abstract

This paper deals with a simple tool for the calculation of the linear and non-linear behaviour of hingeless rotor blades with uneven blade properties. The calculation bases on the Galerkin Method which was used for solution of the non-linear differential equations given by Hodges and Dowell [1] and aims for the fan diagram respectively rotor design. After a physical analysis of the coupled differential equations, the basics of the calculation tool are described. The calculation is divided into two steps: In step one the linear system of differential equations is solved by a numerical solver based on the Integration Matrix Method [2],[3],[4],[5]. The resulting static and dynamic deflections of the ”linear” rotor blade are the inputs for the second part, in which the non-linear differential equations is then solved by the Galerkin Method. The calculation tool is validated and here after valued with available databases for rotor blades and with solutions given by analytical calculations.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2001, monograph_id=30,
Title:Contribution to the Calculation of the Linear and Non-Linear Behaviour of Hingless Rotor Blades with Uneven Blade Properties - A Simple Calculation Tool.
Authors:
AuthorsInstitution or Email of Authors
Büter, A.UNSPECIFIED
Ehlert, U.-C.UNSPECIFIED
Nitzsche, F.UNSPECIFIED
Date:2001
Journal or Publication Title:27th European Rotorcraft Forum, Proceedings CD
Volume:1
Page Range:30-1-30-10
Editors:
EditorsEmail
Kamov Company, UNSPECIFIED
Status:Published
Event Title:27. European Rotorcraft Forum, Moskau, Russia, Sept. 2001
Organizer:European Rotorcraft Forum
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Institut für Strukturmechanik
Deposited By: Sibylle Wolff
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 16:17

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