EXPANDABLE NOZZLE OF ROCKET ENGINE Russian patent published in 2019 - IPC F02K9/97 

FIELD: rocket equipment.

SUBSTANCE: invention relates to the field of rocket construction and can be used in the development and manufacture of rocket engines with nozzles of a large degree of expansion for the upper stages of rockets and spacecraft. Sliding nozzle of the rocket engine includes a fixed socket, extendable nozzles, multiple linkage centering mechanisms and a cylindrical ring installed inside the small diameter of the extension nozzle. Lever mechanisms are located inside the gas path of the nozzle and are pivotally connected on one side to a ring freely supported on the conical surface of a large diameter of the inner surface of the fixed socket and the end of the fixed socket associated therewith, and on the other side, they are pivotally connected to the cylindrical ring of the extension nozzle. Length of the links of the lever mechanism is chosen so that the length of the complete displacement along the axis of the nozzle of the end of the link connected with the cylindrical ring of the extension nozzle is longer than the path of the extension of the extension nozzle.

EFFECT: invention allows to ensure the discharge of the structural elements of the sliding nozzle, which have fulfilled their function, as well as reduce the length of the step.

1 cl, 3 dwg