Passive Damping of Spacraft-Structures

Details Passive Damping of Spacraft-Structures Passive Damping of Spacraft-Structures

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.500r&link_type=abstract

IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,

Physics

Scientific paper

For a wide range of spacecraft structures dynamic loads are critical. The structural stresses caused by these loads can be reduced by the increase of mechanical damping. A simple, lightweight and reliable method is artificial friction damping which is applied in many areas of classical mechanical engineering. Friction damping covers potential to save mass and cost and can increase the service life of structures. It is capable of suppressing a wide range of mechanical vibrations. The method is low priced, simple in manufacturing and application as well as maintenance-free. The paper describes the work on the design, development and experimental testing of passive damping methods applied for S/C lightweight structures. The expected dynamic loads relevant for future Reusable Launch Vehicles (RLVs) are investigated from present point of view. A possibility is shown where friction elements are integrated between the layers of sandwich panels. In a further example friction elements are implemented into a fin-model representative for a RLV-demonstrator. Here, theoretical investigations show a mass saving potential of almost 30%. Further possibilities for application in future RLV technologies, mass saving as well as life-span extension potential of such passive damping devices are subjects of investigation.

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