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Structural Identification Tests of the Ariane 5 EPS Stage.

Sinapius, M. and Füllekrug, U. (1995) Structural Identification Tests of the Ariane 5 EPS Stage. DLR-Interner Bericht. IB 232 - 95 C 04. 192 S.

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The EPS stage, the second upper stage of the Ariane 5 launcher, was tested in the launcher test stand in Lampoldshausen, Germany during the second half of 1994. The precalculations of its structural dynamic behaviour revealed the possibility of the occurrence of severe so-called POGO vibrations. In order to monitor and control the occurrence of these unstable variations, a so-called "red-line" system was developed based on modal data. Structural identification tests were performed by DLR to acquire a reliable data basis for POGO risk control. The tests comprised frequency response functions and free decay measurements. This report describes the test performance, data evaluation, and test results.

Item URL in elib:https://elib.dlr.de/39702/
Document Type:Monograph (DLR-Interner Bericht)
Additional Information: LIDO-Berichtsjahr=1995,
Title:Structural Identification Tests of the Ariane 5 EPS Stage.
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Open Access:No
Number of Pages:192
Keywords:Ariane 5, POGO vibrations, experimental modal analysis, Ibrahim time domain method.
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:UNSPECIFIED
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:51

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