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Airship wind tunnel test model based on air blowing and suction flow control

A flow control and wind tunnel test technology, which is applied in the field of airship wind tunnel test models, can solve the problems that airship drag reduction technology wind tunnel tests cannot be carried out, and achieve the effect of enriching drag reduction design methods and promoting self-development

Pending Publication Date: 2021-12-07
CHINA SPECIAL TYPE FLIER RES INST
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Problems solved by technology

[0003] Existing airships usually adopt the aerodynamic shape of "rotated hull + X-shaped tail". Most of the wind tunnel test models are rigid shell structures with smooth surfaces. The hull is designed and manufactured in multiple sections, and the empennage is separated from the rear section of the hull. , each component is connected by bolts, which can be used for conventional force measurement or pressure measurement wind tunnel test research, but it cannot carry out wind tunnel tests of airship drag reduction technology based on blowing and suction flow control

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  • Airship wind tunnel test model based on air blowing and suction flow control
  • Airship wind tunnel test model based on air blowing and suction flow control

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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The present invention is based on the original airship wind tunnel test model, and additionally designs the blowing and suction flow control components, which not only embodies inheritance and saves model design, processing and installation costs, but also has innovation to complete specific test tasks. The wind tunnel test model of the airship based on blowing and suction flow control is composed of four parts: hull, empennage, balance installation components, and blowing and suction flow control components. The overall assembly situation is as follows: figure 1 shown.

[0026] a) Hull

[0027] The hull is designed and manufactured in five sections, namely the front section, the middle section, the ventilation section, the middle and rear section and the tail section. Each section of the hull is an aluminum ...

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Abstract

The invention belongs to the technical field of aircraft pneumatic tests, and discloses an airship wind tunnel test model based on air blowing and suction flow control. The model comprises an airship body, an empennage, a balance mounting assembly, and an blowing and sucking air flow control assembly, wherein the empennage is fixedly connected to the tail portion of the airship body through bolts, the balance mounting assembly is fixedly connected to the middle front portion of the airship body through bolts and serves as a force transmission structure between the airship body and a force measuring balance, and the blowing and sucking air flow control assembly is fixedly connected to the middle rear portion of the airship body through bolts. The airship blowing and sucking air flow control wind tunnel test is realized, the aerodynamic characteristics of the airship under different blowing and sucking air schemes are obtained, the influence rule of blowing and sucking air control parameters is analyzed, and the resistance reduction effect of airship blowing and sucking air flow control is evaluated.

Description

technical field [0001] The invention belongs to the technical field of aircraft aerodynamic tests, in particular to an airship wind tunnel test model based on air blowing and suction flow control. Background technique [0002] Blowing and suction flow control is an active flow control technology that can suppress the flow separation of surface airflow. It was developed from the research on flow control around aircraft wings and has been practically applied on some aircraft. It is an effective way to increase lift and reduce drag. measures, and the airfoil blowing and suction wind tunnel test technology is relatively mature. At present, there is still a blank in the wind tunnel test of airship blowing and suction flow control in China, and no data related to the design of the wind tunnel test model has been found. [0003] Existing airships usually adopt the aerodynamic shape of "rotated hull + X-shaped tail". Most of the wind tunnel test models are rigid shell structures wi...

Claims

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Application Information

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IPC IPC(8): G01M9/02G01M9/04G01M9/08B64F5/60
CPCG01M9/02G01M9/08G01M9/04B64F5/60
Inventor 胡涛黄龙太王昆仑田瑞阮远罗奔
Owner CHINA SPECIAL TYPE FLIER RES INST