|Table of Contents|

Static test of support ring used in launch vehicle power system test(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2014年06期
Page:
85-89
Research Field:
工艺与材料
Publishing date:

Info

Title:
Static test of support ring used in launch vehicle power system test
Author(s):
SHEN Bing-mei;  BU Yu;  LIU Rui-min
Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Keywords:
support ring;  static test;  MT inspection;  power system test;  launch vehicle
PACS:
V433.9-33
DOI:
-
Abstract:
A non-destructive static test scheme for a support ring used in a launch vehicle power system test was established to evaluate its stiffness and strength. In order to simulate the impact load of engine shutdown, the maximum load of static test was set to 2 times of the rated total thrust of the engine, including horizontal and vertical components, which were equally divided into 8 stages of load step. Twenty-seven three-direction strain measuring points and twelve axial displacement measuring points were set up to detect the stress and displacement of the key points on the ring. The measured results shows that, for the maximal load, the equivalent stress reaches 303 MPa, lower than the yield strength of the material; the axial deformation reaches 3.16 mm, lower than the allowable deformation; the maximum stress point is located on the pin holes of the legs. The change of the distance between the pin holes was measured and MT crack detection of the steel plate surface nearby was performed. The data indicates that, the support ring has enough stiffness and strength under 2 times of the rated load of power system , and can be used for the test.

References:

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Last Update: 1900-01-01