Wind field quality testing device suitable for low-temperature and low-air-pressure wind tunnel
A test device and low-pressure technology, applied in the field of aircraft ground test and spacecraft, can solve the problems of complex test system and many measurement channel resources, and achieve the effect of less resources, high angle control accuracy and small impact
Inactive Publication Date: 2019-01-08
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
View PDF8 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Moreover, the more measurement sensors are arranged, the more measurement channel resources are occupied, which makes the test system more complicated
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
[0026] The following is a detailed description of the wind field quality testing device suitable for low-temperature and low-pressure wind tunnels of the present invention with reference to the accompanying drawings, but the description is only exemplary and is not intended to limit the protection scope of the present invention.
[0027] See Figure 1, Figure 1a It is a front view of the wind field quality testing device suitable for low temperature and low pressure wind tunnels of the present invention, Figure 1b is a top view of the wind field quality testing device suitable for low-temperature and low-pressure wind tunnels of the present invention, wherein the device of the present invention mainly includes a mounting bracket 2 , a measuring frame 1 , a rotating mechanism 3 and a heat preservation cover 4 . The device is fixed on a certain section of the wind tunnel test section through the mounting bracket 2, and is generally installed on the air inlet section. Several win...
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 wind field quality testing device suitable for a low-temperature and low-air-pressure wind tunnel. The wind field quality testing device mainly comprises a mounting bracket,a measuring frame, a rotating mechanism and a heat preservation cover; the mounting bracket is fixed on a cross section of a wind tunnel test section, wherein a plurality of wind field parameter measuring sensors are arranged on the measuring frame according to a certain arrangement mode and a position requirement; the measuring frame is arranged on the rotating mechanism; the heat preservation cover is arranged between the measuring frame and the rotating mechanism, and is used for carrying out temperature control on the rotating mechanism, so that the rotating mechanism can be kept at the proper working temperature; and under the driving of the rotating mechanism, the plurality of wind field parameter measuring sensors rotate along with the rotation of the measuring frame, and measure wind field parameters at all positions of the same cross section. According to the wind field quality testing device suitable for the low-temperature and low-air-pressure wind tunnel provided by the invention, the rotation angle control precision of the device is better than 0.5 degrees and the rotation angle range is from 0 degree to 360 degrees, and the wind field quality testing device has the characteristics of being small in influence on the uniformity of the wind field, less in occupied measurement channel resources and high in angle control precision, and solves the evaluation and debugging of the wind field quality of a test wind tunnel under low temperature and low air pressure, so that the wind field environment really simulates the test requirement, and the requirements of relevant aerospace models are satisfied.
Description
technical field [0001] The invention belongs to the technical field of spacecraft and aircraft ground tests, and in particular relates to a low temperature and low pressure wind tunnel wind field realized by arranging wind temperature, wind speed and other sensors on the device when simulating a low temperature and low pressure wind speed environment on the ground quality test. Background technique [0002] With the development of my country's space missions, the exploration of Mars and other extraterrestrial planets has been gradually carried out. In order to achieve the purpose of comprehensive verification and model correction of landers, rovers and other star spacecraft, it is necessary to install the spacecraft in a place that can provide The wind tunnel in the low temperature and low pressure environment conducts sufficient environmental assessment, that is, the wind tunnel is required to perform a composite simulation of the temperature, pressure, and wind speed of the...
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 IPC IPC(8): G01M9/02G01M9/04
CPCG01M9/02G01M9/04
Inventor 简亚彬高庆华王晶李西园王润泽李天水洪辰伟张丽娜
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG