elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Passiv damping on spacecraft sandwich panels

Romberg, Oliver and Tausche, M. and Pereira, C. and Panning, L. (2007) Passiv damping on spacecraft sandwich panels. 10th European Conference on Spacecraft Structures, Materials & Mechanical Testing, 10. - 13. Sept., Berlin, Germany.

[img] PDF (PASSIV DAMPING OF SPACECRAFT SANDWICH PANELS) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
218kB

Abstract

For reusable and expendable launch vehicles as well as for other spacecraft structural vibration loads are safety critical design drivers impacting mass and lifetime. Here, the improvement of reliability and safety, the reduction of mass, the extension of service life, as well as the reduction of cost for manufacturing are desired. Spacecraft structural design in general is a compromise between lightweight design and robustness with regard to dynamic loads. The structural stresses and strains due to displacements caused by dynamic loads can be reduced by mechanical damping based on passive or active measures. Passive damping systems can be relatively simple and yet are capable of suppressing a wide range of mechanical vibrations. Concepts are low priced in development, manufacturing and application as well as maintenancefree. Compared to active damping measures passive elements do not require electronics, control algorithms, power, actuators, sensors as well as complex maintenance. Moreover, a reliable application of active dampers for higher temperatures and short response times (e. g. re-entry environment) is questionable. The physical effect of passive dampers is based on the dissipation of load induced energy. Recent activities performed by OHB have shown the function of a passive friction-damping device for a vertical tail model of the German X-vehicle PHÖNIX but also for general sandwich structures. The present paper shows brand new results from a corresponding ESA-funded activity where passive damping elements are placed between the face sheets of large spacecraft relevant composite sandwich panels to demonstrate dynamic load reduction in vibration experiments on a shaker. Several passive damping measures are investigated and compared.

Document Type:Conference or Workshop Item (Speech)
Title:Passiv damping on spacecraft sandwich panels
Authors:
AuthorsInstitution or Email of Authors
Romberg, OliverDeutsches Zentrum für Luft- und Raumfahrt
Tausche, M.OHB-Systems AG
Pereira, C.RUAG Aerospace
Panning, L.Institut für Dynamik & Schwingungen
Date:September 2007
Status:Published
Keywords:Spacecraft structural design, dynamic loads, mechanical damping, algorithms, power, actuators, sensors as well as complex maintenance
Event Title:10th European Conference on Spacecraft Structures, Materials & Mechanical Testing
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:10. - 13. Sept.
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systemanalyse Raumsegmente
Deposited By: Nicola Behrens
Deposited On:04 Jan 2010 15:24
Last Modified:15 Jan 2010 02:18

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.