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Investigation of ssme alternate high pressure fuel turbopump lift-off seal fluid and structural dynamic interaction
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Elrod, David A. |
| Copyright Year | 1989 |
| Description | The Space Shuttle main engine (SSME) alternate turbopump development program (ATD) high pressure fuel turbopump (HPFTP) design utilizes an innovative lift-off seal (LOS) design that is located in close proximity to the turbine end bearing. Cooling flow exiting the bearing passes through the lift-off seal during steady state operation. The potential for fluid excitation of lift-off seal structural resonances is investigated. No fluid excitation of LOS resonances is predicted. However, if predicted LOS natural frequencies are significantly lowered by the presence of the coolant, pressure oscillations caused by synchronous whirl of the HPFTP rotor may excite a resonance. |
| File Size | 589618 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900010084 |
| Archival Resource Key | ark:/13960/t5z65f32h |
| Language | English |
| Publisher Date | 1989-12-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Dynamic Structural Analysis Cooling Engine Design Pressure Oscillations Steady State High Pressure Seals Stoppers Turbine Pumps Resonant Frequencies Space Shuttle Main Engine Coolants Resonance Excitation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
