LIQUID PROPELLANT ENGINE Russian patent published in 2013 - IPC F02K9/62 F02K9/52 

FIELD: engines and pumps.

SUBSTANCE: liquid-propellant engine comprises at least one gas generator, at least one turbo pump unit, feed and adjustment members, circular regenerative-cooling chamber with shaped center body accommodating aforesaid units, mixing head including case, oxidiser feed unit, mainly oxygen feed, primary fuel feed unit, extra fuel feed unit and fire plug 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 tip communicating oxidiser zone with fire zone, sleeve covering said tip with clearance to communicate the primary fuel unit with fire zone. Note here that tips of at least central zone nozzles have radial grooves at their outlets composed of alternating ledges and recesses. Note also that the sleeve between tip ledges has channels with outlets open to fire zone and inlets communicated with extra fuel unit chamber. Note that outer profile of said channels is equidistant with tip profile.

EFFECT: higher efficiency of three-component fuel mixing.

5 dwg