About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Physical Metallurgy of Mechanochemical Ignition Processes in High Pressure Oxygen Environments |
Author(s) |
Zachary C. Cordero |
On-Site Speaker (Planned) |
Zachary C. Cordero |
Abstract Scope |
A key life-limiting component in next-generation reusable staged combustion rocket engines is the turbopump that pressurizes the propellants. The turbine entry temperature and O2 partial pressure in such devices are typically 350 to 750K and 300 to 600 bar, respectively; these O2 partial pressures are so high that they can cause conventional engineering alloys to ignite and burn uncontrollably. There are two main ignition mechanisms in the oxygen-rich turbine: frictional ignition due to rubbing of rotating components and particle impact ignition when small foreign objects entrained in the flow impact a solid surface. Both mechanisms have caused launch failures in expendable engines and delayed the development of reusable rocket engines. This talk will summarize our efforts to elucidate the physics underlying mechanochemical ignition phenomena by reproducing these processes in the laboratory. |
Proceedings Inclusion? |
Planned: |