2026-09-19T05:00:47Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1518982023-08-24T03:59:51Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Cordero, Zachary
Alyassini, Samair
Massachusetts Institute of Technology. Department of Mechanical Engineering
2023-08-23T16:17:31Z
2023-08-23T16:17:31Z
2023-06
2023-07-19T18:45:04.772Z
https://hdl.handle.net/1721.1/151898
0000-0003-4390-5080
Particle impact ignition is an important source of metal fires in the high-pressure oxygen environments found in the turbines of oxygen-rich turbopumps. Understanding of particle impact ignition has been hindered by experimental challenges in reproducing this phenomenon under controlled laboratory conditions. This study addresses these challenges through the development of a specialized particle impact rig that integrates laser-induced particle impact testing (LIPIT) into an oxygen-compatible pressure vessel, thus enabling precise control over environmental conditions (target temperature, oxygen pressure) as well as impact variables (particle size/shape, impact velocity). This thesis describes the design of the oxygen-compatible pressure vessel, emphasizing considerations such as stress analysis, materials selection, oxygen-compatibility, and integration with the LIPIT system. The thesis concludes with pathfinding experiments successfully demonstrating particle ignition in a prototype rig, providing in situ images of single particle ignition events using application-relevant materials and particle sizes. Future work will use this rig to characterize the effects of operating conditions and material choices on susceptibility to particle impact ignition with a view toward developing more durable oxygen-compatible hardware for next-generation staged combustion rocket engines.
S.M.
Massachusetts Institute of Technology
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https://rightsstatements.org/page/InC-EDU/1.0/
Laser-Induced Particle Impact Testing in High-Pressure Oxygen Environments
Thesis
application/pdf
Master
Master of Science in Mechanical Engineering
Publication
unknown
unknown
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<Abstract>Particle impact ignition is an important source of metal fires in the high-pressure oxygen environments found in the turbines of oxygen-rich turbopumps. Understanding of particle impact ignition has been hindered by experimental challenges in reproducing this phenomenon under controlled laboratory conditions. This study addresses these challenges through the development of a specialized particle impact rig that integrates laser-induced particle impact testing (LIPIT) into an oxygen-compatible pressure vessel, thus enabling precise control over environmental conditions (target temperature, oxygen pressure) as well as impact variables (particle size/shape, impact velocity). This thesis describes the design of the oxygen-compatible pressure vessel, emphasizing considerations such as stress analysis, materials selection, oxygen-compatibility, and integration with the LIPIT system. The thesis concludes with pathfinding experiments successfully demonstrating particle ignition in a prototype rig, providing in situ images of single particle ignition events using application-relevant materials and particle sizes. Future work will use this rig to characterize the effects of operating conditions and material choices on susceptibility to particle impact ignition with a view toward developing more durable oxygen-compatible hardware for next-generation staged combustion rocket engines.</Abstract>
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