ROTARY CONTROL NOZZLE WITH A FLEXIBLE FOLDING HEAD Russian patent published in 2018 - IPC F02K9/97 F02K9/84 

FIELD: rocket technology.

SUBSTANCE: invention relates to rocket technology and can be used in development of rotary control nozzles of variable geometry for rocket engines. Rotary control nozzle of the rocket engine consists of a stationary and moving parts connected by a rocking unit, with a folding nozzle head and a mechanism for its decomposition located at the end of the socket of the moving part, mechanism is made in the form of several telescopic rods evenly spaced apart around the nozzle. Nozzle head is formed by a socket of a flexible composite material and supporting rings installed at intervals along the axis of the nozzle and connected by means of hinges with a mechanism for decomposing the head. Supporting ring nearest to the socket end of the moving part of the nozzle is fixed in the zone of the maximum cross-section of the socket of the moving part of the nozzle so that it forms a continuation of the moving part. Supporting rings in the folded state are arranged so that their maximum cross sections form an area similar to the anterior bottom of the previous stage.

EFFECT: invention provides increased ballistic efficiency of the rocket by reducing the overall length of the rocket in the presence of overall restrictions, reducing the length and weight of the interstage compartments, or by increasing the length and mass of the fuel charge of the rocket engine while maintaining the overall length of the rocket.

1 cl, 2 dwg