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  • resonant fixture design and test verification on shaker srs test

    Paper number

    IAC-13,C2,P,17.p1,x16924

    Author

    Dr. Aijun Ma, China Astronaut Research and Training Center, China

    Coauthor

    Mr. Meng Shi, China

    Coauthor

    Mrs. Hongying Liu, China

    Coauthor

    Mrs. Xuemei Feng, China

    Coauthor

    Mr. Rui Dong, China

    Year

    2013

    Abstract
    Space devices are often subjected to pyroshock events, such as an explosive charge to separate two stages in a multi-stage rocket or to separate the spacecraft itself from the base stage booster. As a result, system devices must be qualified to this severe environment. The severity of a pyroshock environment is usually characterized using a shock response spectrum (SRS). Recently, increased numbers of customers are asking the electrodynamic shaker facility to meet the SRS test requirements because the shaker is controllable and repeatable; however, the limitation of the armature amplitude and power amplifier voltage restricts shaker’s applicability. In order to improve the SRS test potential of a shaker, a resonant fixture is designed according to the knee frequency of the SRS by using the finite element method. The finite element model of a shaker armature and the resonant fixture is established for predicting the fixture’s dynamic response to pyroshock loadings. A real resonant fixture is manufactured by the guidance of the numerical simulation results. The resonant fixture is utilized to achieve a SRS testing; the test results are compared with those obtained by using a conventional fixture. The test data show that the designed resonant fixture can double the shaker’s SRS test capability.
    Abstract document

    IAC-13,C2,P,17.p1,x16924.brief.pdf

    Manuscript document

    IAC-13,C2,P,17.p1,x16924.pdf (🔒 authorized access only).

    To get the manuscript, please contact IAF Secretariat.