LIQUID PROPELLANT ENGINE Russian patent published in 2013 - IPC F02K9/42 

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises gas generator, turbo pump unit, feed and adjustment assemblies, mixing head including housing, unit to feed oxidiser, mainly, oxygen, primary fuel feed tank, extra fuel feed tank and fire bottom unit. Coaxial aligned-jet nozzles making central and peripheral zones are arranged in said units in concentric circles. Said coaxial aligned-jet nozzles include hollow body communicating oxidiser zone with fire zone, sleeve covering said body with clearance to communicate the primary fuel unit with fire zone. Note here that bodies of at least central zone nozzles have radial grooves at their outlets composed of alternating ledges and recesses. Note also that the sleeve between body ledges has channels with outlets open to fire zone and inlets communicated with extra fuel unit chamber.

EFFECT: three-component fuel rocket engine, better mix formation.

5 dwg