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Water tunnel experiment device of supercavtating vehicle vertically swinging around head

An experimental device, supercavitation technology, which is applied in measurement devices, fluid dynamics tests, and testing of machine/structural components, etc., can solve problems such as the actual physical problems that cannot accurately reflect the flapping motion of underwater vehicles, and achieve Avoid repeated disassembly and installation of experimental model work, flexible use, and improved accuracy

Active Publication Date: 2017-05-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the actual physical problem that the existing water tunnel equipment can only carry out a fixed angle of attack when the tail is supported, or the experimental model moves slightly around the fixed fulcrum of the tail, and cannot accurately reflect the actual physical problem of the slapping motion of the underwater vehicle. A water tunnel experimental device for a supercavitating vehicle that swings around its head

Method used

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  • Water tunnel experiment device of supercavtating vehicle vertically swinging around head
  • Water tunnel experiment device of supercavtating vehicle vertically swinging around head
  • Water tunnel experiment device of supercavtating vehicle vertically swinging around head

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine Figure 1 to Figure 8 Describe this embodiment, which includes a stepless eccentric flywheel drive mechanism, a rocker mechanism, a side support 7, a tail support 8, a water tunnel main body 10, a water tunnel inner panel 11, an expansion slot cover plate 13, and a Z-shaped expansion slot frame 9 and spacer 12;

[0028] The stepless eccentric flywheel driving mechanism includes a flywheel 1, a screw 2, a motor 6, a screw adjuster 15, a screw locker 16, a screw 20, an eccentric support 21, two thrust bearing seats 17, and two thrust bearings Gland 18 and two lead screw locking covers 19, one end face of flywheel 1 is provided with inverted T-shaped groove 1-1, and the other end face of flywheel 1 is provided with motor installation tube 1-2, motor 6 is installed with motor The cylinder 1-2 is connected, the lead screw 20 and the eccentric support 21 are both arranged in the inverted T-shaped groove 1-1, and the lead screw 20 is ...

specific Embodiment approach 2

[0033] Specific implementation mode two: combination image 3 To illustrate this embodiment, the bearing support 4 of this embodiment includes a bearing housing 4-1, a central shaft 4-2, a bearing end cover 4-3 and two ball bearings 4-4, and the two ball bearings 4-4 are respectively set At the shaft shoulders at the two ends of the central shaft 4-2, the bearing jacket 4-1 is set on two ball bearings 4-4, and one end of the bearing jacket 4-1 is fixed with a bearing end cover 4-3, and the bearing jacket 4- The other end of 1 is provided with flange 4-5. A TC skeleton type sealing ring is used for sealing between the central shaft 4-2 and the expansion slot cover plate 13 . Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0034] Specific implementation mode three: combination Figure 4 To illustrate this embodiment, a conical connection surface 4-2-1 is provided on the central axis 4-2 of this embodiment and at the connection with the drive swing arm 3, and the drive swing arm 3 is provided with a conical connection surface 4-2. -1 matched conical groove 3-2, drive swing arm 3 is connected with central shaft 4-2 by screw 23. Other components and connections are the same as those in the second embodiment.

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PUM

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Abstract

The invention relates to a water tunnel experiment device of a supercavtating vehicle vertically swinging around the head and aims to solve the actual physical problem that existing water tunnel equipment can only perform a fixed-attack-angle experiment or an experiment in which an experiment model moves around a tail fixed pivot in a small amplitude manner under a tail support condition, and the flapping motion of the underwater vehicle cannot be reflected accurately. The water tunnel experiment device is characterized in that a cavity formed by a water tunnel inner lateral plate, an extension groove cover plate and a Z-shaped extension groove frame in an enclosed manner is an extension groove, a driven swing arm is arranged in the extension groove, a bearing support is arranged on the outer side of the extension groove cover plate, a flange on the bearing support is fixedly connected with the extension groove cover plate, the long hole of a drive swing arm is connected with a screw, a tail support is arranged in a water tunnel body, a lateral support is transversely arranged in the water tunnel body, one end of the lateral support is fixedly connected with the tail support, the other end of the lateral support is fixedly connected with the driven swing arm, and two limit pieces are symmetrically fixedly mounted on two sides of the driven swing arm and are close to one end of the lateral support. The water tunnel experiment device is used for the water tunnel experiment of the underwater vehicle.

Description

technical field [0001] The invention relates to a fluid dynamics water tunnel experiment device, in particular to a supercavitation vehicle water tunnel experiment device which pitches and swings around the head. Background technique [0002] Cavitation occurs when the pressure in a certain area of ​​the liquid flow field decreases to the vaporization pressure of the liquid. The supercavitation vehicle uses the water medium around the vehicle to form a cavitation that wraps the projectile, reducing the wetted area on the surface of the vehicle, which reduces the frictional resistance of the vehicle, and improves the speed and range of the vehicle. During the motion of the flying body, under the action of gravity, there are three motion modes of riding, gliding and flapping in the cavity. Exploring the motion characteristics and dynamic characteristics of flying objects in cavitation has become the focus of research on supercavitation weapons in various countries. [0003] ...

Claims

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Application Information

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IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 王聪夏维学曹伟卢佳兴
Owner HARBIN INST OF TECH