METHOD OF FEEDING FUEL COMPONENTS INTO LIQUID-PROPELLANT ROCKET ENGINE CHAMBER Russian patent published in 2013 - IPC F02K9/52 

FIELD: engines and pumps.

SUBSTANCE: method of feeding three-component fuel into liquid-propellant engine consists in feeding oxidiser, mainly, oxygen and fuel, mainly, kerosene and hydrogen into combustion product via coaxial stray atomisers including tubular case with, mainly, axial channel, and, at least, blind tube made integral with pylon and said tubular case secured coaxially at, at least, pylon. At least, one hole is made in said pylon to extend there along to blind tube axial channel on the side of its blind end. Blind tube channel is formed by blind axial channel on its outlet and, on its inlet, by pylon inlet through hole. Note also tubular case main axial channel features stepped flow section on outlet side. Stepped alteration of injector case flow section shows decrease from said pylons to outlet and is shaped to, at least, one confuser. Sleeve is fitted at tubular case outlet to make circular chamber communicated with kerosene feed unit chamber. Note here that said chamber accommodates helical channels. Flow of oxidiser, mainly, oxygen, is fed into combustion chamber as two flows, primary and supplementary. Note here that oxidiser flow rate is adjusted by varying flow section and atomiser geometrical sizes. Primary portion of oxidiser is fed via atomiser head channel while supplementary portion is fed tangentially via channels premade in atomiser hear pylons, their outer surfaces interacting with inner surface of tubular case. Note here that lengthwise axes of said channels are arranged at an ingle to atomiser lengthwise channel to provided for tangential component of supplementary flow portion rate and its swirling. Flow of fuel, mainly, hydrogen and combustion products based thereon is fed axisymmetrically to atomiser axis to location of aforesaid pylons and directed thereto to impart tangential rate component thereto. Fuel flow rate is controlled by varying geometrical sizes of regulator arranged to make an inlet chamfer at tubular case. Flow of kerosene is fed via circular chamber with tangential component of flow rate. Note here that, at first stage mode, oxygen, kerosene and hydrogen are fed in combustion chamber while, at second stage mode, oxygen and hydrogen are fed therein.

EFFECT: higher atomiser efficiency.

3 cl, 3 dwg