Analysis on reusability design technology of liquid rocket engine
To meet the needs of designing and developing reusable liquid rocket engine,the key design technologies of reusable liquid rocket engine are studied based on the engine systems of the space shuttle,Falcon 9 and X-37B.Combining literature research with engineering development experience,the design methods for engine reusability are analyzed from the aspects of operation and maintenance system con-struction,core component function design,cost design and control,and the key technical challenges are proposed.Research results show that:the deep variable thrust technology,the multiple start technology,the large angle adjustment technology of nozzle,and the diagnosis and monitoring technology of fault are the basic technical guarantee for the successful recovery of rockets;liquid rocket engine has significant high,low temperature and strong vibration conditions,the key technical problems including the technolo-gy of setting up the material performance database in extreme environment,the technology of life design and control,and the design technology of the full life cycle operation system are necessary to be solved urgently;the cost limit design technology based on the performance,reliability,maintainability,safety and supportability of the engine will become a high-tech to the reusability of the engine.
liquid rocket enginedesign technologyreusabilityfull life cyclecost limit design
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