| A novel rocket engine liquid propellant feed system, termed the Reciprocating Feed System, functions by storing the propellant at relatively low pressure in a large main tank and alternately expelling it into three small tanks where it is sequentially pressurized and fed into the engine. This concept was assessed analytically and experimentally to determine its potential for future propulsion systems. A system mass estimation tool was created and the Reciprocating Feed System was analyzed for various sized systems and compared to conventional systems. Results show considerable benefits, in cost, reliability, system mass, and deliverable payload, for systems operating at chamber pressures of approximately 200 to over 1,000 psi. A test system was designed, constructed, and operated at the flow rates and pressures required of 10,000 to 20,000 pound thrust engines. Results showed that the Reciprocating Feed System is a viable concept and is therefore a candidate for future propulsion systems. |
