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A variable attack angle turbofan engine blade adjustment mechanism

A turbofan engine and adjustment mechanism technology, applied in the direction of engine components, engine functions, machines/engines, etc., to achieve the effects of reducing power consumption, improving power, and good applicability

Active Publication Date: 2017-12-12
JIANGSU GAOJING MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of these studies focus on the blade shape and fixed angle of attack of the blade, and the research and design of variable angle of attack are still rarely reported. is a new direction

Method used

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  • A variable attack angle turbofan engine blade adjustment mechanism
  • A variable attack angle turbofan engine blade adjustment mechanism
  • A variable attack angle turbofan engine blade adjustment mechanism

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Experimental program
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Embodiment Construction

[0011] The present invention will be further described below in conjunction with specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not as a limitation to the present invention.

[0012] Such as Figure 1 to Figure 3 As shown, a blade adjustment mechanism of a turbofan engine with a variable angle of attack includes a fairing 1, a cylindrical driving steering gear 2, a small top screw 3, a central gear drive frame 4, a first bearing 5, a central gear 6, Planetary gear 7, large ring gear 8, planet carrier 9, tension bolt 10, power main shaft 11, second bearing 12, pinion gear 13, small worm 14, small worm gear 15, rotating shaft 16, blade 17, connecting bolt 18, The blade hub 19 is characterized in that: the blade hub 19 is fixedly installed on the power main shaft 11, the rotating shaft 16 is rotatably installed in the corresponding hole of the blade hub 19, and the blade 17 is fixedly instal...

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PUM

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Abstract

The invention provides a novel turbofan engine blade adjusting mechanism with a variable attack angle, which is suitable for miniature turbofan engines. A main body of the novel turbofan engine blade adjusting mechanism comprises a planetary gear train speed-adjusting mechanism and a worm gear worm angle-adjusting mechanism. The novel turbofan engine blade adjusting mechanism is characterized in that power output by a main output shaft is used for driving turbofan blades to rotate at a high speed, and driving a planetary gear train to do synchronous and whole rotation at a high speed; and therefore, an adjusting driving force is not generated. A miniature servo motor is used for adjusting speed of the planetary gear train according to a calculated transmission ratio so as to drive the worm gear worm system to perform fine attack angle adjustment; and therefore, adjustable changes of the power of the engine are realized finally, and requirements for different power loads are met.

Description

technical field [0001] The invention provides a turbofan engine blade adjustment mechanism with a variable attack angle, which belongs to the technical field of automatic adjustment equipment design for turbofan blades. Background technique [0002] Micro-turbofan and turbojet engines are one of the key powers of miniaturized drones, and their performance is related to the overall service life and safety of the drone. At present, due to its more and more applications in the civilian field, its development has attracted more and more attention. Improving the power of a turbofan engine has always been a hot issue. In addition to increasing the rotational speed of the rotating shaft, changing the shape of the blade and the torsional angle of attack is also one of the focuses of research. And because the flow field analysis is becoming more and more accurate, it undoubtedly provides a strong theoretical basis for improving the dynamic characteristics of the blade. However, at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D7/00F16H37/02
CPCF01D7/00F05D2220/36F05D2260/40311F05D2260/74
Inventor 冯增瑞
Owner JIANGSU GAOJING MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
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