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Design method of big supercooling water droplet icing detector and detector

A technology of icing detector and design method, which is applied in the field of aviation detection, and can solve problems such as the inability to detect icing with SLD, the sensitivity of liquid water content, and the inability to distinguish the particle size of water droplets.

Inactive Publication Date: 2015-02-18
AERODYNAMICS NAT KEY LAB
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Problems solved by technology

The purpose of the present invention is to solve the problem that the existing detection method is only sensitive to liquid water content, but cannot distinguish the particle size of water droplets, and cannot be used for SLD icing detection
The purpose of the present invention is to solve the problem that the existing detection method is only sensitive to liquid water content, but cannot distinguish the particle size of water droplets, and cannot be used for SLD icing detection

Method used

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  • Design method of big supercooling water droplet icing detector and detector
  • Design method of big supercooling water droplet icing detector and detector
  • Design method of big supercooling water droplet icing detector and detector

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Embodiment 1

[0043] 1. Formulate the design goals for the configuration of the supercooled large water droplet detector.

[0044] Design a detector configuration with a curvature change, so that under normal water drop conditions, the water droplets will all hit the front of the configuration, and there is only one continuous impact area on the entire detector. However, under the SLD condition, in addition to the impact of supercooled water droplets on the front part, the back will also encounter the impact of supercooled water droplets, which is manifested as multiple discontinuous icing regions on the detector.

[0045] Taking the simplest three impact areas as examples below, a detector configuration is designed, the detector configuration includes a first protrusion and a rear part, the rear part is composed of a second protrusion, the first protrusion and the second protrusion The two protrusions are connected through grooves. That is, the detector is composed of two raised parts, fo...

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Abstract

The invention disclose a method for designing the configuration of a big supercooling water droplet icing detector based on a numerical computation method of movement and knock-on effect of supercooling water droplets. The existing icing detector can analyze whether an ice-formation condition exists or not through detecting the information such as liquid water content and temperature in the atmosphere. The invention aims to solve the problem that the conventional detecting method is only sensitive to the liquid water content, cannot differentiate water droplet sizes, and cannot be used for SLD icing detection. The detector comprises a first bulge and a rear part, wherein the first bulge is connected with the rear part through a groove. According to the invention, the configuration of the detector with curvature change is designed, so that in the conventional water dropping condition, water droplets all strike the front part of the configuration, so that only one continuous striking area is formed in the detector; while under the condition of SLD, the supercooling water droplets strike both the front part and the rear part, therefore, a plurality of incontinuous icing areas are formed in the detector.

Description

technical field [0001] The invention relates to the field of aerial detection, in particular to a design method of a supercooled large water drop icing detector and a detector. The invention can effectively determine whether there are supercooled large water droplets in the flight environment, thereby providing guarantee for the safety protection of the icing of the aircraft. Background technique [0002] There are sub-zero but still liquid supercooled water droplets high in the atmosphere, which can freeze quickly if they are slightly disturbed. When the aircraft passes through the cloud layer containing supercooled water droplets, the supercooled water droplets hit the surface of the aircraft, and icing will occur. Icing is one of the important hidden dangers of flight safety. For a long time in the past, researchers believed that the icing of aircraft was mainly caused by supercooled water droplets with a diameter of less than 50 μm, and the research work was mainly carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D15/20
CPCG01N15/00G01N15/0255G01N2015/0288
Inventor 易贤周志宏朱国林桂业伟王勋年
Owner AERODYNAMICS NAT KEY LAB
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