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An Improved Method for Determining the Installation Position of the Icing Sensor

A technology for icing sensors and installation locations, applied in deicing devices, ground devices, transportation and packaging, etc., can solve the problems of reduced evaluation reliability and evaluation errors, and achieve reduced calculations, high reliability, and accurate evaluation results and reliable results

Active Publication Date: 2021-06-04
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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Problems solved by technology

However, there are still some evaluation errors in these methods, for example, under the conditions of relatively high temperature and large liquid water content, there are evaluation errors caused by low freezing rate, which leads to a decrease in the reliability of the evaluation

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  • An Improved Method for Determining the Installation Position of the Icing Sensor

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Embodiment Construction

[0059] The following description provides many different embodiments, or examples, for implementing various features of the invention. The elements and arrangements described in the following specific examples are only used to express the present invention in a concise manner, and are only used as examples rather than limiting the present invention.

[0060] An improved method for determining the installation location of the icing sensor is to further accurately evaluate the installation location of the sensor based on the existing simplified method of using the ratio of the water collection coefficient to evaluate the installation location, combined with the calculation of the icing phase, and specifically includes the following steps ,Such as figure 1 Shown:

[0061] 1-1. Calculate the air flow field of the aircraft with sensors;

[0062] The calculation formula of the air flow field is:

[0063]

[0064] This formula is the governing equation for the calculation of th...

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Abstract

The invention is applicable to the technical field of aircraft icing detection, and provides an improved method for determining the installation position of the icing sensor: calculating the air flow field of the aircraft with the sensor; calculating the water collection coefficient β1 at the position of the sensor and the The ratio β1 / β2 of the maximum water collection coefficient β2; if the ratio β1 / β2 is greater than 1, calculate the ratio h1 / h2 of the average icing thickness h1 on the sensor to the average icing thickness h2 on the windward side of the wing; if the ratio h1 / h2 is greater than 1, then this position is determined as the installation position of the sensor; if the ratio h1 / h2 is less than or equal to 1, then this position is not suitable for installing the sensor. The invention couples the ice type calculation with the liquid water analysis to judge the installation position of the sensor, avoids the evaluation error caused by the low freezing rate, and has higher evaluation reliability.

Description

technical field [0001] The invention belongs to the technical field of aircraft icing detection, and in particular relates to an improved method for determining the installation position of an icing sensor. Background technique [0002] When an aircraft flies through clouds containing supercooled water droplets, the supercooled water droplets can impinge on the surface of the aircraft and may freeze into ice. Icing will destroy the aerodynamic shape of the aircraft, change its aerodynamic characteristics, and may even lead to flight accidents when the icing is severe. In order to ensure flight safety, it is very important to accurately judge whether icing occurs. The icing sensor can send an alarm to the flight crew at the early stage of icing, automatically turn on or instruct the crew to turn on the anti-icing system, so as to avoid the occurrence of flight accidents caused by icing, which is an improvement measure for flight safety. The proper installation position of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D15/20B64F5/00
Inventor 石雅楠王强易贤刘宇杨升科李维浩
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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