Single-point belly supporting device of two-stage attack angle mechanism and control method

A technology of an angle of attack mechanism and a control method, which is applied in the field of aerodynamic wind tunnel testing in the aerospace industry, can solve problems such as model interference, large space occupation, and can not meet the test requirements, achieve smooth motion, avoid tilting moment, volume small effect

Active Publication Date: 2022-02-11
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This structural setting needs to meet the adjustment of the range of large angle of attack, so it takes...

Method used

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  • Single-point belly supporting device of two-stage attack angle mechanism and control method
  • Single-point belly supporting device of two-stage attack angle mechanism and control method
  • Single-point belly supporting device of two-stage attack angle mechanism and control method

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Embodiment Construction

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0032] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0033] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, it is a schematic structural diagram of this embodiment. In this embodiment, the main structure is a machete 2, a base 1 and a pole base 7. The pole base 7 moves along the machete 2, and the machete 2 moves along the base 1. movement, thereby enabling two-stage movement, thereby enabling a wide range of movement against the angle of attack.

[0034] Wherein, the machete ...

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Abstract

The invention discloses a single-point belly supporting device of a two-stage attack angle mechanism and a control method. The single-point belly supporting device comprises a base, a bent knife and a supporting rod base, wherein a first guide rail, a gear rack and a second guide rail are arranged on the two opposite outer side surfaces of the bent knife respectively, a bent knife supporting seat is arranged on the base, a first sliding block and a first gear are arranged on the bent knife supporting seat, a second sliding block and a second gear are arranged on the supporting rod base, the second sliding block is connected to the second guide rail, the second gear is meshed with the gear rack, the first gear and the second gear are meshed with the gear racks on the different side surfaces of the bent knife respectively, and the first gear and the second gear are independently connected with a driving motor. According to the invention, a two-stage angle-of-attack mechanism is adopted to reach a large angle-of-attack range of -30 degrees to 30 degrees, the size is small, the device is suitable for a narrow installation space, a double-motor-driven anti-backlash structure is adopted, the problems of installation errors, structural deformation, gear abrasion and the like are compensated, and the effect of keeping anti-backlash for a long time is achieved.

Description

technical field [0001] The invention relates to the technical field of aerodynamic wind tunnel tests in the aerospace industry, in particular to a single-point belly support device and a control method of a two-stage angle-of-attack mechanism. Background technique [0002] The commonly used belly support devices in wind tunnel tests are divided into single-rod belly braces, double-rod belly braces, multi-rod belly brace devices, etc., and the machete mechanism is a machete-shaped single-point belly The influence of the angle on the airflow is basically the same, and the data repeatability is good. [0003] There are two ways to set up the scimitar mechanism. The first is to set it outside the wind tunnel without considering the influence of the scimitar mechanism on the flow field of the wind tunnel. Therefore, the scimitar mechanism has a very large volume and can perform a large range of attack angles. adjustment. Such as the scheme described in the published patent CN10...

Claims

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Application Information

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IPC IPC(8): G01M9/04F16H19/04F16H57/12
CPCG01M9/04F16H19/04F16H57/12F16H2057/122
Inventor 曹清媛赵昱田昊杨本川
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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