Electric pump-fed liquid propellant rocket engine is an engine that uses electric pumps for propellant supply and cooling cycle. The engine breaks through the traditional pressurization mode of using inert gas to squeeze the propellant or gas-driven turbo pump, and has the advantages of simple system, light structure, high reliability and easy implementation of thrust adjustment. This study introduces the composition, working principle and technical advantages of the electric pump-fed liquid propellant rocket engine, evaluates the factors affecting the mass of the supply system with sensitivity analysis method, and analyses the key technologies of the electric pump-fed rocket engine.

section deals with propulsion systems: the chemical (liquid and solid) propellant engines, the … pressure vessels for solid propellant rockets and for liquid propellant rockets with pressurized … weight is devoted to the propulsion systems, mainly to the propellant itself. The extent of

This study presents a dynamic simulation framework to optimize thrust regulation in an electric pump-fed rocket engine using liquid oxygen-liquid methane propellants. The engine operates across a 20-100% thrust range. A comprehensive system model simulates transient interactions among electric pumps and injectors. It focuses on actuation timing effects on thrust control efficiency. The model integrates pump dynamics, combustion, and two-phase flow. It uses a time-stepped numerical method. Results show that synchronized pump actuation minimizes regulation time. Delays extend it. The oxidizer pump predominantly influences chamber pressure and mixture ratio due to its faster response. Pre-actuation of components modulates performance. Oxidizer pump adjustments reduce mixture ratio during thrust decrease. Injector pre-actuation elevates pressure ratios. An optimized timing sequence mitigates fluctuations in mixture ratio and injector pressure during deep-thrust transitions. Validation against experimental data confirms accuracy. Errors are below 1.2% for chamber pressure and mass flow rate. This methodology elucidates electric pump-fed engine dynamics. It offers a scalable tool for refining thrust regulation. It advances propulsion system design through computational modeling.

Selection of liquid or solid fuel depends on wfai rocket should do ___ 1 Huntsville Ala AP Which method of propelling a rocket is better with liquid or solid fuel a Ask this question of an ex pert and he will tell you It depends on what your rocket it supposed to do Dr Wernher von Braun di rector of the Marshall Space Flight Center says the Rus sians use liquid propulsion in their biggest space missions including the recent manin space flights The Saturn space booster the lVzmillion pound thrust vehicle that is the free worlds largest space vehicle also uses a liquid sys tem But in space vehicles of the future says Von Braun liquid and solid systems likely will be combined and some vehi cles might use nuclear and electronic propulsion Bystems as well In my opinion there will be in the foreseeable future important places in the science of rocketry for both liquid and solid boosters Von Braun said Undoubtedly the future will see more and more a mixture of propellants in multistage rockets liquid solid nuclear and electric We are conduct ing research in all of these areas and intend to use each to the

A8 THE EVENING STAR W Jiington 0 C Wdntd ay Ftbruory 4 1959 MISSILELAND U S A Plant Busy Building 2 Big Rocket Engines By WILLIAM HINES Stir Science Writer CANOGA PARK Calif At the plant where really big rocket engines first were standardized men are busy these days on two projects designed to propel American men and machines spaceward The projects are the 15mlllion pound clustering of Thor and Jupiter engines and the development of a singlechambered 18million pound rocket motor The men who are working on the projects are engineers of North American Aviations Rocketdyne Division The goal for the clustering job is about a year away As for the big fellow it is likely to be late 1963 before the task is finished The Pentagons AdI vanced Research Projects Agency has contracted for the cluster while the singlecham ber project is being done for the civilian National Aeronau tics and Space Administration Big Rocket Engine Maker I Rocketdyne makes motors for Thor Jupiter Atlas and Red stone missiles which means that the company does most of the rocket motor business at present The companys workshop for these projects is in the new tradition clean airy unclut tered