• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.05a
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• pp.251-253
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• 2010

In the leakage test of a Main Oxidizer shut-off valve, gas leakage was found on the middle flange with a metal conical seal. The structural analysis was performed for three models with different numbers of bolts and flange shapes and then one model was selected in consideration of the minimum axial gap deformation as well as the weight increment due to the change of flange shapes. Experimental leakage tests for the simulated flanges of the selected model has resulted in no gas leakage, and consequently the structural analysis method for the design of the middle flanges has proved feasible.