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Load Alleviation for Large Aeroplanes by Active Mode Control of the Coplanar Motion of the Horizontal Tailplane
Kordt, M. and Ballauf, C. and Joos, H.-D. (2001) Load Alleviation for Large Aeroplanes by Active Mode Control of the Coplanar Motion of the Horizontal Tailplane. Proc. of IFASD International Forum on Aeroelasticity Structural Dynamics, 2001-06-05 - 2001-06-07, Madrid. ISBN 84-931375-6-1.
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Abstract
A standard FE-analysis of large aeroplanes reveals one or several 2-4 Hz modes of the horizontal tailplane (HTP), termed coplanar modes. They describe a coplanar or a fore / aft motion of the HTP. Due to their low eigenfrequencies, these modes can be easily excited by lateral gust, in particular by continuous turbulence on the fin. As the aerodyamic damping of these modes is small, strong resonance phenomena occur, yielding high loads at the HTP root. Via a mode control system, consisting of a dynamic feedback of the x-acceleration at the HTP-tip to the rudder, active damping and thereby a loads reduction of more than 20 % is demonstrated. The system is termed HTP-contol(ler).
| Document Type: | Conference or Workshop Item (Paper) | ||||||||
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| Additional Information: | LIDO-Berichtsjahr=2004, | ||||||||
| Title: | Load Alleviation for Large Aeroplanes by Active Mode Control of the Coplanar Motion of the Horizontal Tailplane | ||||||||
| Authors: |
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| Date: | 2001 | ||||||||
| Volume: | III | ||||||||
| Page Range: | pp. 323-330 | ||||||||
| Editors: |
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| ISBN: | 84-931375-6-1 | ||||||||
| Status: | Published | ||||||||
| Keywords: | active mode control, gust load alleviation | ||||||||
| Event Title: | Proc. of IFASD International Forum on Aeroelasticity Structural Dynamics | ||||||||
| Event Location: | Madrid | ||||||||
| Event Type: | international Conference | ||||||||
| Event Dates: | 2001-06-05 - 2001-06-07 | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | L AR - Aircraft Research | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||
| DLR - Research theme (Project): | L - Flexible Aircraft (old) | ||||||||
| Location: | Oberpfaffenhofen | ||||||||
| Institutes and Institutions: | Institute of Robotics and Mechatronics | ||||||||
| Deposited By: | elib DLR-Beauftragter | ||||||||
| Deposited On: | 16 Sep 2005 | ||||||||
| Last Modified: | 14 Jan 2010 18:38 |
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