Research/Patents/US 5085041
US 5085041

DUAL MODE ENGINE HAVING A CONTINUOUSLY OPERATED OXIDIZER PUMP

Assignee

ROLLS-ROYCE PLC

Filed

Feb 17, 1989

Granted

Feb 4, 1992

Location

WARWICK EN GB

Abstract

An aerospace propulsor is powered by liquid hydrogen. The hydrogen is passed through a turbine which drives a liquid oxygen pump. During non-atmospheric flight, the liquid oxygen is directed to the propulsor's combustion chamber where it is mixed with the liquid hydrogen and combustion takes place. However during atmospheric flight, the liquid oxygen is pumped to drive a turbine which powers a fan adapted to provide additional pressurization of air entering the engine for combustion.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

May 23, 1989

Rescinded

Aug 2, 1991

Duration

2 years, 2 months

Inventor

  • 1JOHN L. SCOTT-SCOTT

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records