SPACECRAFT POWER PLANT FUEL FEED SYSTEM Russian patent published in 2014 - IPC F02K9/50 

FIELD: aircraft engineering.

SUBSTANCE: proposed system comprises control unit, fuel tanks with deformable metal webs to divide said tanks into liquid and gas chambers. Pneumatic line with electrically driven air valves communicating high-pressure cylinder with fuel tank gas chambers, fuel and oxidizer lines with electrically driven fluid valves and pressure indicators. Note here that it comprises extra high-pressure cylinder connected with pneumatic line via independent pipe including two parallel pyro valves. Note here that said pneumatic line incorporates extra pair of parallel pyro valves arranged between high-pressure cylinder and independent pipe. Two pairs of electrically driven air valves connected in series are arranged downstream of the latter. Pressure indicators are arranged in one of fuel lines upstream of electrically driven fluid valve.

EFFECT: one-hundred-percent descent to Earth, higher reliability of operation.

1 dwg