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Common drive type rear duct ejector in adjustable mechanism of variable cycle engine

A variable cycle engine and driving technology, which is applied in the direction of machines/engines, jet propulsion devices, etc., can solve the problems of large cumulative error, many connecting rods, and many actuators, so as to reduce adverse effects and prevent jamming Phenomenon, the effect of improving reliability

Active Publication Date: 2014-07-23
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the shape of the casing is too high, and the casing needs to have a step for arranging the actuator at a suitable position; there are too many actuators; there are too many connecting rods, and the cumulative error is large

Method used

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  • Common drive type rear duct ejector in adjustable mechanism of variable cycle engine
  • Common drive type rear duct ejector in adjustable mechanism of variable cycle engine
  • Common drive type rear duct ejector in adjustable mechanism of variable cycle engine

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Embodiment Construction

[0059] Such as figure 1 , Figure 2a , Figure 2b , Figure 3-5As shown, the device of the present invention consists of a cylinder 1, a double arm connecting arm 2, a rotating shaft 3, a sleeve 4, a bearing 5, a bearing seat 6, a retaining ring 7, a valve body connecting rod 8, an inner casing 9, and an outer machine Cassette 10, valve body 11, synchronous ring connecting rod 12, synchronous ring connecting hinge seat 13, synchronous ring 14, synchronous ring support 15, single-arm connecting arm 16, linear bearing guide rail 17, linear bearing 18, linear bearing fixing frame 19 composition.

[0060] The overall layout of the device is as follows figure 1 , Figure 2a , Figure 2b As shown, the synchronous ring 14 is installed and positioned on the outside of the casing 10 through the synchronous ring support 15, and the synchronous ring 14 is connected to the connecting arms (double-arm connecting arm 2 and single-arm connecting arm 16) in four places: in area I, two ...

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PUM

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Abstract

A common drive type rear duct ejector in an adjustable mechanism of a variable cycle engine comprises actuator cylinders, two-arm link arms, rotating shafts, a sleeve, a bearing, a bearing pedestal, an elastic collar, a valve body connecting rod, an inner casing, an outer casing, a valve body, a synchronous loop connecting rod, a synchronous loop connecting rod hinged support, a synchronous loop, a synchronous loop support, single-arm link arms, a linear bearing guide rail, a linear bearing and a linear bearing fixing support. By using the external actuator cylinders and the synchronous loop, the common drive type rear duct ejector in the adjustable mechanism of the variable cycle engine has the advantages of being small in airflow channel blockage, reliable in moving, synchronously coordinative, capable of being applied and practiced easily and the like.

Description

technical field [0001] The invention relates to a common-driven rear duct ejector in an adjustable mechanism of a variable cycle engine, which is used to realize the state conversion of the rear duct ejector to adjust the working state of the engine, and belongs to the high performance in aerospace technology Gas turbine engine technology field. Background technique [0002] The foreign variable cycle engine design started in the 1970s, while the domestic variable cycle engine design began in this century. The adjustable mechanism of the variable cycle engine mainly includes three parts: the mode switching valve, the front ducted ejector, and the rear ducted ejector. The rear ducted ejector is located after the low-pressure turbine and before the afterburner. The conversion valve and the front duct ejector cooperate with the adjustment, which is an indispensable part of the adjustable mechanism. [0003] The rear duct ejector proposed by US Patent 4069661 in 1978 directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/28
Inventor 胡殿印毛建兴张龙申秀丽陈宇竹
Owner BEIHANG UNIV
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