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Internal parallel connection type air intake passage capable of combining mode transition and variable-geometry adjustment and control method

A mode conversion and air inlet technology, which is applied in the direction of jet propulsion devices, gas turbine devices, machines/engines, etc., can solve the difficulty of increasing the weight of the actuator, the complexity of the actuator, the difficulty of controlling the actuator, thermal protection, and sealing Difficulties and other issues, to achieve the effect of light weight, less difficult control, and compact layout

Active Publication Date: 2020-06-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, two sets of actuating mechanisms are required, which will not only significantly increase the weight of the actuating mechanism, the complexity of the actuating mechanism, and the difficulty of controlling the actuating mechanism, but also have problems such as thermal protection and sealing difficulties.

Method used

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  • Internal parallel connection type air intake passage capable of combining mode transition and variable-geometry adjustment and control method
  • Internal parallel connection type air intake passage capable of combining mode transition and variable-geometry adjustment and control method
  • Internal parallel connection type air intake passage capable of combining mode transition and variable-geometry adjustment and control method

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Embodiment Construction

[0028] see Figure 1 to Figure 3As shown, the present invention discloses an internal parallel air intake channel with mode conversion combined with variable geometry adjustment, including a high-speed channel 1 extending from front to rear, and a low-speed channel located inside the high-speed channel and extending from front to rear side by side with the high-speed channel 2. The precursor compression surface 7-1, the splitter plate 4 of the high-speed / low-speed channel between the high-speed channel and the low-speed channel, the mode conversion component 6 , the variable geometry component 7 and the motor actuation component 8 . The splitter plate 4 includes a fixed plate 4-1 and a movable plate 4-2 hinged at the front end of the fixed plate. The movable plate 4-2 swings inward or outward from the hinged position with the fixed plate 4-1. The mode conversion assembly 6 mainly includes a drive rod 6-3 with a chute 6-2 at one end and a roller 6-4. The pin 6-1 on the movable...

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Abstract

The invention discloses an internal parallel connection type air intake passage capable of combining mode transition and variable-geometry adjustment. The internal parallel connection type air intakepassage comprises a high-speed passage, a low-speed passage, a mode transition component, a variable-geometry component and a motor actuating component. An air intake passage is in the low-speed mode,at the moment, the variable-geometry component adjusts the throat area and the internal shrinkage ratio of the air intake passage to ensure the starting performance of the air intake passage at low Mach number; when the flight Mach number is within the range of the mode transition mach number, the mode transition component and the variable-geometry component work simultaneously to realize synchronous operation of the mode transition process and variable-geometry adjustment; when the air intake passage is in the high-speed mode, at the moment, the mode transition component is combined with thevariable-geometry component to adjust the throat area and the internal shrinkage ratio of the air intake passage to ensure the compression performance of the air intake passage at high Mach number. The invention further provides a control method of the air intake passage.

Description

technical field [0001] The invention relates to the field of aircraft design, in particular to a combined engine inlet. Background technique [0002] The air-breathing combined engine has many advantages such as wide operating range, high reliability, reusability, horizontal take-off and landing, and high specific impulse, making it an ideal power plant for hypersonic vehicles. As an important part of the air-breathing combined engine propulsion system, the intake duct not only efficiently provides air with a certain pressure, temperature and flow rate to the engine in a wide range of Mach numbers, but also shoulders the responsibility of working mode conversion, outlet flow field, etc. Functions such as uniformity adjustment and isolation of upstream and downstream disturbances. For this reason, the wide Mach number range performance of this type of inlet is one of the key technologies for the development of air-breathing combined engines. [0003] The TBCC inlet is the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/042F02C7/057
CPCF02C7/042F02C7/057B64D33/02
Inventor 张悦王超李超谭慧俊陈亮
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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