An underwater vehicle propeller cavitation observation device
A technology of underwater vehicle and observation device, which is applied in the direction of measuring device, fluid dynamics test, machine/structural component test, etc. Water leakage and other problems, to achieve the effect of easy implementation, low manufacturing cost, and easy mass production
Active Publication Date: 2022-01-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Opening windows on the wall makes the aircraft have the risk of water leakage, which brings great hidden dangers to the safety performance of underwater vehicles
At the same time, due to the fixed position of the observation window, the observation area of the camera is relatively fixed, so that only the cavitation in certain areas of the propeller can be observed, which limits the observation range of the propeller cavitation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] In order to clearly illustrate the technical characteristics of this patent, the following describes this patent in detail through specific implementation methods and in conjunction with the accompanying drawings.
[0023] The present invention as figure 1 As shown, the tail end of the propeller is fixedly connected with a wake cap 2, which can also be called a rectifying cap and a hub cap, and the wake cap 2 includes a transparent glass cover 7;
[0024] The cavitation observation device includes a camera 3 installed inside the transparent glass cover 7, the camera 3 faces the blade cavitation area 9 of the propeller, and the camera rotates synchronously around the axis of the propeller through the wake cap. Therefore, the propeller blade cavitation area 9 is observed and photographed through the transparent glass cover 7 by means of the camera 3 . Since the camera 3 is inside the transparent glass cover 7 and rotates synchronously with the propeller, firstly, the ord...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a cavitation observation device for a propeller of an underwater vehicle, and relates to the field of hydrodynamic flow observation and measurement of rotating machinery. A method is proposed that can use ordinary low-speed cameras and does not require additional lighting sources for supplementary lighting, which can obtain a clear propeller cavitation shape without any interference to the wall flow of the underwater vehicle and the propeller inflow. The underwater vehicle propeller cavitation observation device. The tail end of the propeller is fixedly connected with a wake cap 2, and the wake cap 2 includes a transparent glass cover 7; the cavitation observation device includes a camera 3 connected in the transparent glass cover 7, and the camera 3 faces The blades of the propeller cavitate the region 9 and rotate synchronously with the propeller. The invention has the advantages of good observation effect, convenient use, low manufacturing cost, etc., and is easy to implement and mass produce. It also has the advantages of good use effect, good stability and high reliability.
Description
technical field [0001] The invention relates to the field of hydrodynamic flow observation and measurement of rotating machinery, in particular to an underwater vehicle propeller cavitation observation device. Background technique [0002] For underwater moving objects, once the propeller blades cavitate, it will seriously affect the propulsion efficiency and noise performance of the propeller. Therefore, how to observe the propeller cavitation of underwater vehicles has always been a key and difficult issue in the field of ships. one. [0003] The underwater vehicle propeller is a rotating machine, and it is in a state of high-speed rotation during work. At present, the special equipment for underwater shooting is highly specialized, high in cost, and bulky, and it is difficult to arrange it underwater, which seriously hinders the underwater vehicle propeller. The development of cavitation observation, but it is difficult to clearly obtain the cavitation of the propeller b...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 张传鸿
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS