Aero-engine jet pipe throat area adjusting mechanism

Abstract

The invention belongs to the technical field of aero-engine jet pipe throat area adjusting design, and particularly relates to an aero-engine jet pipe throat area adjusting mechanism. The mechanism comprises: a plurality of supporting beams, wherein the supporting beams are used for being connected to the outer wall of a jet pipe connecting cylinder and distributed in the circumferential direction; a plurality of rocker arms, wherein each rocker arm is correspondingly hinged to one supporting beam; a plurality of pull rods, wherein one end of each pull rod is correspondingly hinged to one rocker arm, and the other end of each pull rod is correspondingly hinged to the outer wall of one convergence piece; and a plurality of actuating cylinders, wherein a cylinder body of each actuating cylinder is used for being hinged to the outer wall of a jet pipe connecting cylinder, and a piston rod is correspondingly hinged to one rocker arm so as to drive the corresponding rocker arm to rotate around the hinged part of the rocker arm and the corresponding supporting beam, so that the corresponding convergence piece is driven to move through the corresponding pull rod, and the throat area of a jet pipe is adjusted.

Description

Technical field[0001]The present application belongs to the technical field of avionics nozzle, and more particularly to an aviation engine nozzle larynet area regulating mechanism.Background technique[0002]The nozzle is an important part of the aerospace engine to discharge the body after high temperature, high pressure gas expansion, resulting in engine thrust, which mainly includes: nozzle connection, plurality of convergent sheets, multiple expansion sheets, where At one end of each of the convergent sheets hinged to the outlet end of the nozzle connection, in the circumferential distribution, the adjacent convergence sheet is sealed between the contact, constitute the air-forward size of the nozzle convergence section, and the radial dimension of the nozzle convergence section is away from the nozzle The connection barrier is gradually contracted, constitutes the nozzle throat; one end of each expanded sheet corresponds to the other end of one convergence sheet, and the adjacen...

AI Technical Summary

Problems solved by technology

[0004] 1) The structure is complex and needs to occupy a large space;

[0005] 2) In order to synchronize the adjustment of each convergent piece, a complex synchronization mechanism is designed, the load is large, the adjustment efficiency is low, and the adjustment of the convergent piece is hysteresis, which makes the adjustment of the throat area of ​​the nozzle lag behind, limiting the engine performance improvement

Images