A Vector Realization Method of Binary Vector Nozzle in which the Regulating Plate of Expansion Section Doesn't Pass the Center Line

Abstract

The invention provides a binary vector nozzle vector realization method in which the expansion section adjustment plate does not pass the center line, comprising: constraining the end position of the expansion section adjustment plate on one side to the center line position, and increasing the deflection angle of the expansion section adjustment plate on the other side , to increase the area ratio of the nozzle, so that the airflow in the nozzle is converted from a fully expanded state to an overexpanded state, and the airflow is separated by the position-constrained side regulating plate to achieve the target aerodynamic vector angle under the condition that the expanding section regulating plate does not exceed the center line. The invention adopts binary vector nozzles controlled by hydraulic actuators for the converging section and the expanding section respectively, which can avoid the collision of the upper and lower adjusting plates caused by the out-of-control of the adjusting plate operating cylinder in the expanding section; at the same time, the expansion can be shortened. The segment adjustment plate is used as the stroke of the cylinder to achieve the purpose of weight reduction.

Description

technical field [0001] The present disclosure relates to the technical field of aero-engines, and in particular to a method for realizing vectoring of a binary vectoring nozzle in which an expansion section regulating plate does not cross the center line. Background technique [0002] With the continuous improvement of aircraft maneuverability and stealth performance requirements, more and more attention has been paid to the binary vector nozzle, which is easy to integrate with the rear fuselage of the aircraft and takes into account both infrared stealth performance and maneuverability. The vector thrust of the binary vector nozzle is generally realized by the deflection of the expansion section adjustment plate. [0003] When the traditional mechanically adjustable binary vector nozzle realizes the vector deflection, the upper and lower expansion section adjustment plates are generally controlled to deflect to one side at the same angle at the same time in the non-vector p...

AI Technical Summary

Problems solved by technology

When the nozzle is in a flight condition with a small throat area and a large vector angle, the traditional binary vector nozzle control method to achieve vector deflection will cause the end of the expansion section adjustment plate on one side to cross the centerline of the nozzle.

If there is no constraint on the movement of the end of the expansion section adjustment plate, then when the expansion section is used as the adjustment plate actuator out of control, there is a risk of collision between the upper and lower expansion section adjustment plates, resulting in damage to the nozzle and affecting the flight safety of the aircraft

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