Охлаждаемый составной сопловой блок многокамерной двигательной установки Russian patent published in 2023 - IPC F02K9/97 

FIELD: rocket and space technology.

SUBSTANCE: invention relates to rocket and space technology, namely to the device of propulsion systems. A cooled composite nozzle block of a multi-chamber propulsion system, including shortened Laval nozzles with a shortened central body, the outer surface of the thermionic layer is coated with a material from the electride group with an effective electron work function of 0.01-3.3 eV, characterized by high electrical and thermal conductivity during heating, while the central body with the thermionic layer is made in the form of a cathode, and an anode is installed near the edge of the central body at a distance of at least 0.1 mm from the edge of the central body, electrically non-conductive elements are located between the cathode and the anode in contact with them, while the anode is connected through conductive elements with voltage source input, the voltage source output is connected to the central body, which, in turn, is in electrical contact with the thermionic layer.

EFFECT: invention provides increased reliability of the cooled composite nozzle block of a multi-chamber propulsion system due to thermionic cooling of the central body.

1 cl, 1 dwg