Bypass passive double-throat vectoring nozzle with reverse thrust function

Abstract

The invention discloses a bypass passive dual-throat vector spray pipe with a reverse pushing function. The bypass passive dual-throat vector spray pipe comprises a spray pipe body, wherein the inner flow channel of the spray pipe body comprises a throat channel front convergence section, a first throat channel, a second throat channel front expansion convergence section, a throat channel concave cavity and a second throat channel which are connected in sequence; bypass channels are arranged at the throat channel front convergence segment and close to the first throat channel; the inlets of the by-pass channels face the fluid inlet of the inner flow channel of the spray pipe body; the outlets of the by-pass channels are positioned in the first throat channel; the spray pipe body is a binary dual-throat spray pipe; the inner flow channel of the spray pipe is formed by splicing a spray pipe rear body rotating shaft bracket inner cavity and a spray pipe rear body inner cavity; a spray pipe rear body is divided along the inner flow channel of the spray pipe body into a spray pipe rear body upper plate and a spray pipe rear body lower plate; both the spray pipe rear body upper plate and the spray pipe rear body lower plate are positioned and connected through rotating shafts and spray pipe rear body rotating shaft brackets. The bypass passive dual-throat vector spray pipe has the advantages that no specially designed reverse pushing device is needed, so that the structural weight is greatly reduced, and the reliability is obviously improved.

Description

technical field [0001] The invention relates to a bypass-type passive double-throat vector nozzle, in particular to a bypass-type passive double-throat vector nozzle with reverse thrust function. It is mainly used in aircraft that require thrust vectoring propulsion system and thrust reverser at the same time, such as STOL aircraft and carrier-based fighters. Background technique [0002] With the development of science and technology, more and more aircraft are equipped with thrust vectoring aeroengines. For carrier-based fighter jets and short take-off and landing aircraft, not only thrust vectoring technology is needed to provide auxiliary power for the take-off phase, but also a thrust reverser device is needed to assist them in quickly decelerating to stop. The nozzle device with thrust vectoring technology and reverse thrust technology will have a good application prospect. [0003] Currently, there are many designs of thrust vectoring nozzles and thrust reversers. ...

AI Technical Summary

Problems solved by technology

[0004] However, few designs have combined the two

Not to mention the difficulty and difficulty of the fusion design of the two, simply speaking of the separation of the thrust vectoring nozzle and the thrust reverser device, most designs have remained on paper due to problems such as complex mechanical structure, bulkiness, poor reliability, and high cost. engineering applications

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