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The structural dynamics analysis of the main injector lox inlet tee and its redesign
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Romano, E. |
| Copyright Year | 1989 |
| Description | A ground test of a specially instrumented Space Shuttle Main Engine (SSME) revealed excessively high strains in the high pressure Liquid Oxygen (LOX) inlet line which carries LOX to the Main Injector. The inlet tee acts as a manifold which utilizes two splitter vanes to direct the flow of LOX into the main injector. When the high strains were discovered, it was thought that these splitter vanes, coupled with high energy flow was the source. This resulted not only in high strains in the LOX inlet tee, but excessive vibration at a frequency of 4000 Hz located at the gimbal bearing, and at the main injector. This was later to be known as The 4kHz Phenomenon. The dynamic analysis which was used to predict the response due to the 4kHz phenomenon and the analysis used to aid in the design modification required to the hardware to reduce or eliminate the phenomenon is examined. |
| File Size | 719486 |
| Page Count | 26 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900017042 |
| Archival Resource Key | ark:/13960/t9867dq58 |
| Language | English |
| Publisher Date | 1989-01-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Dynamic Response Dynamic Structural Analysis Vibration Injectors High Pressure Oxygen Gimbals Frequencies Intake Systems Design Analysis Ground Tests Liquid Oxygen Space Shuttle Main Engine Vanes T Shape Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
