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A binary plug nozzle with reverse thrust function

A plug-type nozzle and reverse thrust technology, which is applied to jet propulsion devices, machines/engines, etc., can solve the problems of low reverse thrust efficiency, no use, complex structure, etc., and achieve the effect of realizing reverse thrust and simple structure.

Active Publication Date: 2017-09-22
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, civilian engines generally have the function of reverse thrust, and only the RB199 engine in active service has the function of reverse thrust, but it uses an axisymmetric nozzle and a clam-type thrust reverser device, which has low reverse thrust efficiency.
Pratt & Whitney of the United States has developed a binary retractable nozzle with reverse thrust function, but it has not been put into use due to its complex structure.

Method used

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  • A binary plug nozzle with reverse thrust function
  • A binary plug nozzle with reverse thrust function
  • A binary plug nozzle with reverse thrust function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a binary plug nozzle with reverse thrust function, including a cylinder body 1, a side wall 2, a converging section 3, a plug cone 4, a baffle plate 5, an actuator 6, a sliding beam 7 and The connecting rod 8, wherein the actuator 6, the sliding beam 7 and the connecting rod 8 form a reverse thrust control mechanism. It is characterized in that: the inlet of the cylinder 1 is circular, the outlet is square, and the middle is evenly transitioned; the side wall 2 and the converging section 3 are tightly connected to the cylinder 1, and there are grooves A and chute B on the side wall 2; the plug cone 4 is a hollow structure, grooves C are provided on the upper and lower sides of the rear part, and bumps D are provided at both ends, and the plug cone 4 is fixed through the bumps D into the groove A on the side wall 2; the baffle 5 The end is hinged with the tail of the plug cone 4, and a hinge point is provided on its inner surface E, which is hing...

Embodiment 2

[0037] This embodiment provides a binary plug nozzle with anti-thrust function, including a cylinder body 1, a side wall 2, a converging section 3, a plug cone 4, a baffle plate 5, an actuator 6, a sliding beam 7 and The connecting rod 8, wherein the actuator 6, the sliding beam 7 and the connecting rod 8 form a reverse thrust control mechanism. It is characterized in that: the inlet of the cylinder 1 is circular, the outlet is square, and the middle is evenly transitioned; the side wall 2 and the converging section 3 are tightly connected to the cylinder 1, and there are grooves A and chute B on the side wall 2; the plug cone 4 is a hollow structure, grooves C are provided on the upper and lower sides of the rear part, and bumps D are provided at both ends, and the plug cone 4 is fixed through the bumps D into the groove A on the side wall 2; the baffle 5 The end is hinged with the tail of the plug cone 4, and a hinge point is provided on its inner surface E, which is hinged ...

Embodiment 3

[0046] This embodiment provides a binary plug nozzle with anti-thrust function, including a cylinder body 1, a side wall 2, a converging section 3, a plug cone 4, a baffle plate 5, an actuator 6, a sliding beam 7 and The connecting rod 8, wherein the actuator 6, the sliding beam 7 and the connecting rod 8 form a reverse thrust control mechanism. It is characterized in that: the inlet of the cylinder 1 is circular, the outlet is square, and the middle is evenly transitioned; the side wall 2 and the converging section 3 are tightly connected to the cylinder 1, and there are grooves A and chute B on the side wall 2; the plug cone 4 is a hollow structure, the upper and lower sides of the rear part are provided with grooves C, and there are bumps D at both ends, and the bumps D are put into the groove A on the side wall 2 to realize the fixing of the plug cone 4; the baffle 5 The end is hinged with the tail of the plug cone 4, and a hinge point is provided on its inner surface E, w...

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Abstract

A binary plug nozzle with anti-thrust function, including cylinder body, side wall, converging section, plug cone, baffle plate, actuator, sliding beam and connecting rod, wherein the actuator, sliding beam and connecting rod constitute the anti-thrust control mechanism. The side wall and converging section are fastened on the cylinder, the plug cone is fixed on the side wall, the end of the baffle is hinged to the tail of the plug cone, and can be opened and closed under the drive of the reverse thrust control mechanism, thereby realizing the reverse thrust function. The invention has the advantages of simple structure, which can not only realize the forward thrust, but also effectively realize the reverse thrust function.

Description

technical field [0001] The invention belongs to the field of aero-engine design, and mainly relates to a binary plug nozzle for an aero-engine. Background technique [0002] Adopting the engine with reverse thrust function can greatly reduce the sliding distance when the aircraft lands, thereby greatly improving the safety of the aircraft. At present, civilian engines generally have the function of reverse thrust. Among the active military engines, only the RB199 engine has the function of reverse thrust. However, it uses an axisymmetric nozzle and adopts a clam-type thrust reverser device, which has low thrust reverse efficiency. Pratt & Whitney of the United States has developed a binary retractable nozzle with reverse thrust function, but it has not been put into use due to its complex structure. In view of the broad application prospects of the binary plug nozzle, it is necessary to design a binary plug nozzle with the function of reverse thrust. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K1/60
Inventor 宁怀松杨深然
Owner AECC SHENYANG ENGINE RES INST