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

FIELD: engines and pumps.

SUBSTANCE: liquid-propellant engine (LPE) includes a gas generator, a turbo-pump unit, feed and control elements, a regeneratively cooled chamber with a shaped central body, in the inner cavity of which the above units are installed, a mixing head including a housing, a supply unit of oxidiser, mainly oxygen, a main fuel supply unit, and additional fuel supply unit an a fire bottom unit. In the above units there installed in concentric circles are coaxial uniaxial-jet injectors forming central and peripheral zones. The above 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 perimetre 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 the cavity made in the sleeve housing, and the inlet part is connected to the additional fuel cavity; the above cavity in the sleeve housing is connected through tangential channels to an annular groove made on the sleeve end and connected to combustion zone.

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

6 dwg