Research on Modal Test Technology of LM-6A Solid-Liquid Strap-On Launch Vehicle

doi:10.3969/j.issn.1671-0940.2022.02.004

AEROSPACE CHINA ›› 2022, Vol. 23 ›› Issue (2): 25-33.doi: 10.3969/j.issn.1671-0940.2022.02.004

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Research on Modal Test Technology of LM-6A Solid-Liquid Strap-On Launch Vehicle

Aerospace System Engineering Shanghai, Shanghai 201109

Online:2022-10-13 Published:2022-10-14
About author:ZHU Chunyan (1985− ), received her Doctor degree from Fudan University. She works at Aerospace System Engineering Shanghai as a senior engineer, engaged in dynamic characteristics design of launch vehicle.

Abstract

Abstract: The LM-6A new generation solid-liquid strap-on launch vehicle has the structural dynamic characteristics of lower frequencies, denser modes and coupling modes in longitudinal, bending and torsion modal space. During the development phase of LM-6A, modal tests of partial stacks and the full vehicle were designed to obtain the structural dynamic properties. The structural dynamic models using the finite element method (FEM) have been verified and calibrated based on the modal test data. This paper describes the pre-test predictions and test execution, and details the comparison between the pre-test predictions and the test data. The successful maiden flight of LM-6A further confirmed the effectiveness of structural dynamic modeling and modal test for LM-6A.

Key words: font-family:arial, helvetica, sans-serif, font-size:15px, background-color:#FAFAFA, ">LM-6A, modal test of full vehicle, partial stack modal test

ZHU Chunyan, YANG Bing, DI Wenbin, CHANG Dongfang, MAO Yuming. Research on Modal Test Technology of LM-6A Solid-Liquid Strap-On Launch Vehicle[J]. AEROSPACE CHINA, 2022, 23(2): 25-33.

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ISSN 1671-0940

CN 11-4673/V

Research on Modal Test Technology of LM-6A Solid-Liquid Strap-On Launch Vehicle

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