COAXIAL SPRAY INJECTOR Russian patent published in 2001 - IPC

FIELD: power engineering. SUBSTANCE: the injector has a hollow tip, connecting the cavity of one component to the cavity of the combustion chamber, and a bush enveloping the tip with an annular gap and connecting the cavity of the other component of the combustion chamber. The bush internal cavity is shaped in the form of cylindrical surfaces of different diameter and length forming at least one annular contraction. The tip outlet section is positioned at a distance equal to (0 to 1.3) of the tip inside diameter from the bush outlet section, and through ducts are made in the tip, before the annular contraction at a distance equal to (1 to 4) of the tip diameter from the bush outlet section, the area of the ducts is less than the area of the tip flow section. EFFECT: enhanced economical efficiency of operation of the combustion chamber and specific thrust pulse in the design condition and in the throttling conditions due to a more qualitative fuel-air mixing. 4 dwg