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Full-Text Articles in Engineering
Direct Electrical Arc Ignition Of Hybrid Rocket Motors, Michael I. Judson Jr.
Direct Electrical Arc Ignition Of Hybrid Rocket Motors, Michael I. Judson Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Hybrid rockets motors provide distinct safety advantages when compared to traditional liquid or solid propellant systems, due to the inherent stability and relative inertness of the propellants prior to established combustion. As a result of this inherent propellant stability, hybrid motors have historically proven difficult to ignite. State of the art hybrid igniter designs continue to require solid or liquid reactants distinct from the main propellants. These ignition methods however, reintroduce to the hybrid propulsion system the safety and complexity disadvantages associated with traditional liquid or solid propellants. The results of this study demonstrate the feasibility of a novel direct …
High Regression Rate Hybrid Rocket Fuel Grains With Helical Port Structures, Sean D. Walker
High Regression Rate Hybrid Rocket Fuel Grains With Helical Port Structures, Sean D. Walker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Hybrid Rockets are popular in the aerospace industry due to their storage safety, simplicity, and controllability during rocket motor burn. However, they produce fuel regression rates typically 25% lower than solid fuel motors of the same thrust level. These lowered regression rates produce unacceptably high oxidizer-to-fuel (O/F) ratios that produce a potential for motor instability, nozzle erosion, and reduced motor duty cycles. To achieve O/F ratios that produce acceptable combustion charactersitics, traditional cylindrical fuel ports are fabricated with very long length-to-diameter ratios to increase the total burning area. these high aspect ratios produce further reduced fuel regression rate and trust …