ENGINE CRYOGENIC FUEL FEED SYSTEM Russian patent published in 2002 - IPC

FIELD: aeronautical engineering; flying vehicles working on cryogenic fuels. SUBSTANCE: system includes two or more booster pumps 1 working in parallel; these pumps are mounted in service sections 2 of tanks 3. Fitted in pipe line after each pump is check valve 4; after checks valves 4, fuel lines are combined in common engine feed pipe lines 5. Besides that, branch pipe 6 with jet 7 is connected to pipe line between each booster pump 1 and check valve 4; outlet of jet is connected with interior of tank; active fuel jet may be used as jet for driving the fuel transfer jet pump. EFFECT: enhanced reliability under normal operating conditions and in case of failure of one or several pumps. 1 dwg