METHOD FOR SUPPLYING FUEL COMPONENTS TO LIQUID-PROPELLANT ENGINE CHAMBER Russian patent published in 2013 - IPC F02K9/52 

FIELD: engines and pumps.

SUBSTANCE: supply method of fuel components to the liquid-propellant engine (LPE) chamber consists in supply of oxidiser and fuel to the cavity of the combustion chamber by means of coaxial jet injectors containing a tubular housing with the main axial channel, as well as a blind tube at least on one pylon, which is fixed coaxially to the housing inside it and made as an integral part of the pylon and the tubular housing; along the pylon there is at least one inlet through hole from external surface of the injector to the axial channel in the blind tube. The blind tube channel is formed on the outlet side with its blind axial channel and on the inlet side with an inlet through hole in the pylon. The main axial channel of the tubular housing on the side of the outlet has stepped change of the flow passage, which is made so that the flow passage of the housing is reduced from pylons to the outlet part, in the form of a confuser. A sleeve is installed on the outlet part of the tubular housing so that an annular cavity, in which channels are made, is formed between external surface of the housing and internal surface of the sleeve. Tubular housing is split-type. On external surface of the blind tube, which is arranged in outlet part of the tubular housing, there made are pylons interacting with internal surface of the tubular housing outlet part; at that, longitudinal axes of the pylons are installed at an angle to longitudinal axis of the injector. In the pylons there are the channels, the outlet part of which is directed at an angle to longitudinal axis of the injector, which is different from the installation angle of longitudinal axes of the pylons. The inlet part of the channels is connected to the cavity of the blind tube, and the outlet part is connected to the annular cavity formed with the tubular housing and the blind tube; at that, the blind tube is split-type and consists of a pylon part and a tip; at that, a jet nozzle is installed at their joint point. Oxidiser flow supplied to the combustion chamber in the form of the main and additional flows is provided by means of a jet nozzle. The main part of oxidiser flow is supplied axisymmetrically through the channel inside the injector tip, and the additional part is supplied tangentially through the channel in pylons of the injector tip; at that, longitudinal axes of the channels are made at an angle to longitudinal axis of the injector, thus providing tangential component of velocity of the additional part of the flow and its swirling. Fuel flow is supplied axisymmetrically to the injector axis and directed to the pylons, thus providing tangential component of velocity. Direction of tangential component of velocity of oxidiser from channels in the pylons is interconnected to opposite side in relation to tangential velocity component of fuel supplied through screw channels in the annular cavity between the sleeve and external surface of the tubular housing.

EFFECT: increasing the economy of the working processes both at operation of the injector as three-component (oxygen-kerosene-hydrogen) and as two-component (oxygen-hydrogen).

3 cl, 4 dwg