A binary vector nozzle capable of realizing s-bend occlusion function

Abstract

A binary vector nozzle capable of realizing the S-curve shielding function belongs to the technical field of aero-engine nozzles, and is characterized in that: the front section of the rounded square cylinder (1) is connected to the engine as a supporting member of the entire nozzle; the first Actuator (2), first pull rod (3), convergence adjustment plate (4), front section of expansion adjustment plate (5), rear section of expansion adjustment plate (6), second actuator (8), second pull rod (9), the third actuator (10), the third pull rod (11), and the expansion adjustment plate (12) are used as the main load-bearing adjustment mechanism to realize the adjustment of throat area and outlet area, the function of S-bend blocking and the function of vector deflection . The invention retains the conventional binary vector nozzle throat area adjustment and the vector deflection function of different angle adjustments, and can realize the function of detecting high-temperature components completely blocked from directly behind the engine, has good infrared stealth performance, and makes up for the existing S Due to the non-adjustable defect of the curved nozzle, the vector deflection is realized, the structure is simple, the reliability is high, and the stealth is good.

Description

technical field [0001] The invention belongs to the technical field of aeroengine nozzles, relates to a binary vector nozzle capable of realizing the S-bend shielding function, and is also applicable to the field of aerospace engine nozzles in demand. Background technique [0002] Due to the non-adjustable length of the expansion section of the traditional aero-engine binary vector nozzle, and the inability to detect the complete shielding of high-temperature components from directly behind the engine, the infrared stealth performance is poor. Although the plug-type lost-volume nozzle can completely shield most of the high-temperature components, the adjustment range of the throat area of ​​this type of nozzle is limited. However, the current S-bend nozzles are all fixed nozzles with non-adjustable throat area, and the vector deflection function cannot be realized, and the aerodynamic loss of the S-bend nozzle is relatively large when stealth is not required. In order to ma...

AI Technical Summary

Problems solved by technology

[0002] Due to the non-adjustable length of the expansion section of the traditional aero-engine binary vector nozzle, and the inability to detect the complete shielding of high-temperature components from directly behind the engine, the infrared stealth performance is poor

Although the plug-type lost-volume nozzle can completely shield most of the high-temperature components, the adjustment range of the throat area of ​​this type of nozzle is limited

However, the current S-bend nozzles are all fixed nozzles with non-adjustable throat area, and the vector deflection function cannot be realized. When the stealth is not required, the aerodynamic loss of the S-bend nozzle is relatively large.

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