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