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Efficient control method of high-altitude airscrew collaborative jet

A technology of synergistic jet flow and control method, applied in propellers, aircraft parts, transportation and packaging, etc., can solve problems such as difficult to effectively improve the working efficiency of the propeller propulsion system, low working efficiency, small application range, etc., and expand the application range of working conditions , Improve aerodynamic efficiency, increase the effect of the maximum lift coefficient

Active Publication Date: 2015-06-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] It can be seen that the propeller design method of the traditional layout cannot meet the performance requirements of high-altitude and long-endurance aircraft, and some common flow control technologies at this stage have many shortcomings, such as: low work efficiency, small application range, and low controllable flow velocity. , therefore, it is difficult to effectively improve the working efficiency of the propeller propulsion system

Method used

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  • Efficient control method of high-altitude airscrew collaborative jet
  • Efficient control method of high-altitude airscrew collaborative jet
  • Efficient control method of high-altitude airscrew collaborative jet

Examples

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Embodiment 1

[0061] This embodiment provides a high-altitude propeller cooperative jet aerodynamic layout configuration installed on the propulsion system of a 20km high-altitude aircraft.

[0062] Such as figure 1 As shown, it is a three-dimensional view of high-altitude propeller cooperative jet efficient aerodynamic layout configuration; as figure 2 As shown, it is the main figure of high-altitude propeller cooperative jet efficient aerodynamic layout configuration; image 3 As shown, it is the rear body diagram of the high-altitude propeller cooperative jet efficient aerodynamic layout configuration; Figure 4 for figure 1 A partial enlarged view of the middle 5 area; Figure 5 for figure 2 Sectional view of the internal structure and schematic diagram of airflow circulation; the propeller includes blades, blade leading edge 3, blade trailing edge 4, hub and mounting holes 6; the coordinated jet device includes a coordinated jet blowing port 1 and a coordinated jet suction port 2...

Embodiment 2

[0070] This embodiment provides a high-altitude propeller cooperative jet aerodynamic layout configuration installed on the propulsion system of a 28km high-altitude aircraft. Among them, the propeller includes a blade, a blade leading edge 3, a blade trailing edge 4, a hub and a mounting hole 6; the coordinated jet device includes a coordinated jet blowing port 1, a coordinated jet suction port 2, a coordinated jet internal pipeline 8, and a coordinated jet flow device. Jet internal air pump7.

[0071] The blade diameter of the high-altitude propeller coordinated jet aerodynamic layout configuration in this embodiment is 2.2 m, and the number of blades is 2. Considering the structural weight, aerodynamic efficiency and aerodynamic requirements, the arrangement interval of the cooperative jet device along the span of the blade is 30% R-90% R (R is the radius of the blade), in order to obtain the best comprehensive performance.

[0072] Such as figure 1 As shown in Fig. 1, th...

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Abstract

The invention provides an efficient control method of high-altitude airscrew collaborative jet. The efficient control method comprises the following steps: setting configuration parameters and working parameters of collaborative jet devices; and configuring each collaborative jet device for propeller blades in a spanwise sectional type according to the configuration parameters; enabling each collaborative jet device to work according to the configured working parameters, so that the airfoil profile of each station reaches the best lift-drag ratio and the minimum energy loss. The operation process of each collaborative jet device is that an air pump simultaneously drives a front-edge negative-pressure region to spray air and a rear-edge high-pressure region to suck air, and actively controls the air stream on the surface of the airfoil profile in a flow mode, wherein the counter acting force of jet flow generated by air spraying and suction is decomposed to two directions, one is the rotation direction of a propeller, and further the rotation of the propeller is boosted, and the resistance is reduced; and the other one is the thrust direction of the propeller, the thrust of the propeller is enhanced, and finally the pneumatic efficiency of the propeller is improved. According to the invention, the operating efficiency of the propelling system of the high-altitude airscrew can be improved.

Description

[0001] This application is a divisional application based on the original application (application number: 201410386224.0). The application date of the original application is: August 07, 2014, the application number is: 201410386224.0, and the name of the invention is: a high-altitude propeller cooperative jet Efficient aerodynamic layout configuration and control method. technical field [0002] The invention belongs to the technical field of propellers, and in particular relates to a high-altitude propeller cooperative jet high-efficiency control method. Background technique [0003] With the continuous development of aviation technology, material technology and other science and technology, high-altitude airship propellers have broad application prospects in communication, remote sensing, early warning and other fields by virtue of the stable meteorological conditions in the stratosphere and good electromagnetic characteristics. hotspot. [0004] Compared with tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/18B64C11/20
Inventor 杨旭东朱敏宋超张顺磊宋文萍许建华宋笔锋安伟刚王海峰李育斌张玉刚
Owner NORTHWESTERN POLYTECHNICAL UNIV
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