Axisymmetric Vector Nozzle Adjustment Mechanism with Motion Decoupling

Abstract

The invention discloses an exercise-decoupling axial-symmetry thrust vectoring nozzle adjusting mechanism and belongs to the technical field of aero engines. The exercise-decoupling axial-symmetry thrust vectoring nozzle adjusting mechanism comprises a cartridge receiver, an adjustable ring, a first driven branch, a second driven branch, a third driven branch, a fourth driving branch, a fifth driving branch and a sixth driving branch. The cartridge receiver is taken as a motionless platform F and the adjustable ring is taken as a motion platform M. Two ends of the first driven branch, the second driven branch, the third driven branch, the fourth driving branch, the fifth driving branch and the sixth driving branch are respectively connected with the adjustable ring and the cartridge receiver. The first driven branch and the second driven branch respectively comprise a universal pair, a lower revolute pair and an upper revolute pair connected sequentially in series. The third driven branch comprises an upper revolute pair, a lower revolute pair and a universal pair sequentially connected in series. The fourth driving branch, the fifth driving branch and the sixth driving branch respectively comprise a lower spherical hinge pair, a sliding pair and an upper spherical hinge pair. With the exercise-decoupling axial-symmetry thrust vectoring nozzle adjusting mechanism, pure rotating output of the adjustable ring can be realized, the adjustable ring is not driven by a shaft to rotate when rotating around the shaft, so that the exercise-decoupling axial-symmetry thrust vectoring nozzle adjusting mechanism has the advantages of good exercise-decoupling performance, easy control and the like; the exercise-decoupling axial-symmetry thrust vectoring nozzle adjusting mechanism has less spherical hinge pairs, so that production cost and mounting difficulty are reduced.

Description

technical field [0001] The invention relates to a device in the technical field of aero-engines, in particular to a motion decoupling axisymmetric vector nozzle adjustment mechanism. Background technique [0002] Axisymmetric thrust vectoring technology is one of the key technologies of modern advanced fighter jets. It is characterized by manipulating the aircraft by changing the direction of the airflow of the engine tail nozzle to provide additional moments for yaw and pitch while achieving horizontal propulsion. The introduction has fully brought into play and improved the stealth, maneuverability, agility, short take-off and landing capability and supersonic cruise of fighter jets. Achieving thrust vectoring requires a corresponding thrust vectoring device, among which the Axial-Symmetric Vectoring Exhaust Nozzle (AVEN), which can rotate 360 ​​degrees, represents the development direction of engine exhaust system design and research. In the vector spraying device, the a...

AI Technical Summary

Problems solved by technology

However, for this type of mechanism, it cannot realize the pure rotation output of the adjustment ring, that is, when it rotates around a certain axis, it must produce accompanying movement, so its coupling is strong, the motion solution is more complicated, and the control is also more complicated; Many S pairs that are difficult to process make the manufacturing cost increase

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