LIQUID-PROPELLANT ENGINE MIXING HEAD Russian patent published in 2013 - IPC F02K9/52 

FIELD: engines and pumps.

SUBSTANCE: mixing head comprises 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. Coaxial aligned-jet nozzles comprise hollow body connecting oxidiser unit chamber with burning zone, sleeve surrounding said body with clearance to connect primary fuel unit chamber with burning 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 mixing head, better mix formation.

4 dwg