COMPOSITE NOZZLE UNIT OF MULTI-CHAMBER PROPULSION INSTALLATION Russian patent published in 2023 - IPC F02K9/97 

FIELD: rocket and space technology.

SUBSTANCE: invention relates to rocket and space technology, namely to a device of propulsion installations. A composite nozzle unit of a multi-chamber propulsion installation includes shortened Laval nozzles with a shortened central body, the central body is made hollow, a thermal emission layer of material with efficient electron yield work of 0.01-3.3 eV is applied to its inner surface, an anode is located at a distance from 1 nm to 1 cm from the thermal emission layer, non-electroconductive elements are located between the thermal emission layer and the anode in contact with them, while the thermal emission layer and the anode form a cavity, the cavity between the thermal emission layer and the anode is vacuumized and sealed, the anode is electrically connected, via conductive elements, to an input of a voltage source, an output of the voltage source is connected to the thermal emission layer, the anode is adjacent to an element, inside which channels of an anode cooling system are located, a simple-ionized additive is located in the cavity between the thermal emission layer and the anode.

EFFECT: invention provides an increase in the reliability of a multi-chamber propulsion installation with a central body due to its thermal emission cooling.

1 cl, 1 dwg