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- W2062012411 abstract "The Space Shuttle Main Engine (SSME) development program experienced two similar appearing fuel feedline failures during the shutdown portion of two engine tests. Due to the extensive damage that resulted, an in-depth investigation was carried out to determine the causes of the failures, as well as establish a design alternative to allow continuation of engine development. Experimental air flow tests using a subscale model were performed with high-frequency pressure instrumentation such that pressure oscillation amplitude, frequency, and spatial characteristics could be determined. The test results led to the conclusion that the SSME was experiencing pressure oscillations of 38 psi at a frequency of approximately 100 Hz occurring over the last 3 ft of the nozzle. These pressure pulses were then used as a forcing function to determine the response of the feedline nozzle assembly using a structural dynamic model. The results were compared with strain data taken from actual tests. Results of this investigation yielded an understanding of the cause of the failures and led to a redesign which exceeds life requirements." @default.
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- W2062012411 date "1981-11-01" @default.
- W2062012411 modified "2023-09-26" @default.
- W2062012411 title "Structural response of the SSME fuel feedline to unsteady shock oscillations" @default.
- W2062012411 doi "https://doi.org/10.1121/1.2019029" @default.
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