LIQUID-PROPELLANT ENGINE Russian patent published in 2013 - IPC F02K9/52 F02K9/60 

FIELD: engines and pumps.

SUBSTANCE: liquid-propellant engine includes a gas generator, a turbo-pump unit, power supply and control units, a chamber with a mixing head, which includes a housing, a unit for supply of an oxidiser, mainly oxygen, a main fuel supply unit, an additional fuel supply unit and a fire bottom unit. In the above units there installed in concentric circles are coaxial uniaxial-jet injectors forming central and peripheral zones. Coaxial uniaxial-jet injectors include a hollow tip attaching the oxidiser cavity to combustion zone, a sleeve enclosing the tip with a gap and attaching the first fuel cavity to combustion zone. In tips of at least injectors of central zone there are radially located slots in the outlet part, which are made in the form of alternating projections and cavities; radially located slots are made so that perimeter of central part of the jet, which is restricted with generatrixes of beams, is not more than 3s, and beam length - 2.3…2.5s, where s is beam thickness. Number of beams is equal to three; in the sleeve between projections of the tip there are channels, the outlet part of which opens to combustion zone, and the inlet part is connected to the additional fuel cavity.

EFFECT: improving completeness of mixture formation at operation on three-component fuel.

5 dwg