A single-action system double-sliding beam type binary retractable nozzle control mechanism

Abstract

A double-sliding beam type two-dimensional convergent-divergent nozzle control mechanism for single actuator systems comprises driving mechanisms and double-sliding beam mechanisms. More specifically, each driving mechanism comprises mounting bases and actuator cylinders, the mounting bases are fixed on a two-dimensional convergent-divergent nozzle barrel A, one end of each actuator cylinder is articulated with one of the mounting bases, and the other end of each actuator cylinder is articulated with a sliding beam; each double-sliding beam mechanism is composed of two sliding beams, rockers and connecting rods, wherein one of the sliding beams can slide forward and backward in slideways on sidewalls, the other sliding beam can slide up and down in slideways on the sidewalls B, the two sliding beams are articulated with the rockers, one end of each first connecting rod is articulated with one of the rockers, the other ends of the first connecting rods are articulated with one of convergent sections E, one end of each second connecting rod is articulated with one of the sliding beams, and the other ends of the second connecting rods are articulated with one of divergent sections; the convergent sections and the divergent sections can be simultaneously controlled by the double-sliding beam mechanisms to turn, so that the throat area and outlet area of a two-dimensional convergent-divergent nozzle can be adjusted together. The double-sliding beam type two-dimensional convergent-divergent nozzle control mechanism has the advantages that: the structure is simple and compact, the number of moving connecting parts is less, and the throat area and outlet area of a two-dimensional convergent-divergent nozzle can be adjusted together effectively.

Description

technical field [0001] The invention relates to the design field of aero-engine nozzles, in particular to a single-action system double-sliding beam type dual retractable-expandable nozzle control mechanism. Background technique [0002] The control mechanism of the converging nozzle can be divided into single-actuation system and multi-actuation system according to the number of actuation systems. Bulky, while the single-action system has a simple structure and light weight, which can meet the needs of conventional retractable nozzles. At present, conventional axisymmetric diverter nozzles usually use single-action system control mechanisms, but these control mechanisms are not suitable for binary diverter nozzles. In order to effectively realize the control of binary retracting and expanding nozzles, it is necessary to design a control mechanism with simple and compact structure and few moving joints. Contents of the invention [0003] The purpose of the present invent...

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Problems solved by technology

[0002] The control mechanism of the converging nozzle can be divided into single-actuation system and multi-actuation system according to the number of actuation systems. Bulky, while the single-action system has a simple structure and light weight, which can meet the needs of conventional retractable nozzles

At present, conventional axisymmetric diverter nozzles usually use single-action system control mechanisms, but these control mechanisms are not suitable for binary diverter nozzles

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