Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sensing mechanism of two-dimensional airfoil model

A two-dimensional airfoil and model technology, which is applied in the field of aerodynamics, can solve problems such as difficult to remove air bubbles, cumbersome process, and difficult realization of flow direction, etc., and achieve the effects of short response time, high repeatability, and improved work efficiency

Active Publication Date: 2020-08-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in actual application, the air bubbles are not easy to get rid of. Once the lower end is out of the water, the air bubbles need to be re-exhausted after entering. The process is more cumbersome.
In addition, it is not easy to realize the flow velocity direction at the measuring point.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sensing mechanism of two-dimensional airfoil model
  • Sensing mechanism of two-dimensional airfoil model
  • Sensing mechanism of two-dimensional airfoil model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] figure 1 It is a schematic diagram of the sensing mechanism of the reverse view of the two-dimensional airfoil model of the present invention. Such as figure 1 As shown, the sensing mechanism of the two-d...

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

No PUM Login to View More

Abstract

The invention relates to a sensing mechanism of a two-dimensional airfoil model. The sensing mechanism comprises a pressure sensor group, a plurality of first conduits, a second conduit and a cavity,wherein the pressure sensor group is vertically fixed in a mounting hole in a surface of the two-dimensional airfoil model, and a pressure measuring surface of each pressure sensor in the pressure sensor group is vertical to the surface of the two-dimensional airfoil model; a plurality of mounting holes perpendicular to the surface of the two-dimensional airfoil model are formed in the surface ofthe two-dimensional airfoil model; the cavity is fixed in the two-dimensional airfoil model; reference pressure ends of the pressure sensors in the pressure sensor group are connected to the cavity through the first conduits, and the plurality of pressure sensors in the pressure sensor group are in one-to-one correspondence with the plurality of first conduits; the cavity is connected with the first end of the second conduit, and the second end of the second conduit is arranged in the atmosphere outside the two-dimensional airfoil model. According to the mechanism disclosed in the invention, measurement precision of the two-dimensional airfoil surface pressure distribution can be improved.

Description

technical field [0001] The invention relates to the field of aerodynamics, in particular to a sensing mechanism of a two-dimensional airfoil model. Background technique [0002] The rotor is the key component of the helicopter, which can provide the helicopter with lift, thrust, and force and moment required for maneuvering flight. The aerodynamic analysis of the rotor is the core issue of helicopter aerodynamics. [0003] Two-dimensional airfoil surface pressure measurement in a wind tunnel is one of the main means to study rotor aerodynamics. However, the pressure measurement device used in the existing experimental equipment mainly uses pitot tubes. When using pitot tubes to measure pressure, there are the following disadvantages : [0004] The pitot tube itself will disturb the flow field, which will reduce the measurement accuracy, and the error will be more obvious when measuring the dynamic pressure. [0005] When using the Pitot tube for experiments, theoretically,...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01L11/00
CPCG01M9/06G01L11/00G01M9/08G01L15/00G01L19/147
Inventor 孔卫红刘明治李攀史勇杰陈仁良
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com