UNMANNED AERIAL VEHICLE AIR COOLING SYSTEM EJECTOR Russian patent published in 2024 - IPC F04F5/14 B64U20/90 B64D13/00 

FIELD: aircraft engineering.

SUBSTANCE: invention relates to aircraft engineering, particularly, to unmanned aerial vehicle air cooling system ejector, and can be used in unmanned aerial vehicles to cool their systems and assemblies. Unmanned aerial vehicle air cooling system ejector comprises an air intake, at least two heat exchangers and a mixing chamber, which is formed by walls of the flow channel and has different in shape inlet, middle and outlet cross sections along the length of the channel. In the area between the inlet and middle section of the flow channel behind the heat exchanger along the gas flow there is a manifold of the nozzle apparatus, consisting of tubes located across the gas flow in a horizontal projection, and on each tube there is a row of nozzles directed along the gas flow. Nozzles have a conical confusor at the inlet, a cylindrical part of the critical section and a conical diffuser at the outlet.

EFFECT: increased efficiency of ejector operation and, as a result, improved characteristics of unmanned aerial vehicle engine operation, due to reduced consumption of gas from the engine and increased service life of components of unmanned aerial vehicle systems due to proper cooling.

4 cl, 4 dwg, 2 tbl