Method for determining wind shear load caused by downburst when passenger plane takes off and lands

Abstract

The embodiment of the invention provides a method for determining a wind shear load caused by downburst when a passenger plane takes off and lands. The method comprises the steps of building a three-dimensional model according to structural information of the passenger plane; establishing a wind field model corresponding to the downburst, and adding the three-dimensional model into the wind fieldmodel according to the position information of the passenger plane; dividing the wind field model into grids in different forms through a preset grid division method; obtaining the edge grid wind pressure of the wind field model and the wall surface boundary type of the wind field model, and calculating the wind pressure data of each grid according to the edge grid wind pressure, the wall surfaceboundary type and the division condition of the grids; and determining the wind pressure data of the passenger plane flying on the flight path according to the flight path information of the passengerplane and the wind pressure data of each grid. By the adoption of the method, the load of wind shear caused by downburst when the passenger plane takes off and lands can be studied, and then the safety of the passenger plane during wind shear caused by downburst can be improved.

Description

technical field [0001] The invention relates to the technical field of wind pressure analysis of passenger aircraft, in particular to a method for determining the wind shear load caused by a downburst when a passenger aircraft takes off and lands. Background technique [0002] As a form of thunderstorm strong wind, downburst can cause disastrous strong wind on the ground or near the ground. The formation mechanism of the downburst is that the sun heats the air unevenly to generate convective movement of the air. At high altitudes, more warm and humid air with strong buoyancy will gather. As the altitude increases, the warm and humid air will gradually liquefy when it is cold. , its ascent process stops, and at this time, the liquefied air begins to sink towards the ground at an accelerated rate due to its own density change. The aircraft has high requirements on the surrounding wind environment during take-off and landing, and a sudden downburst will form a strong wind shea...

AI Technical Summary

Problems solved by technology

The aircraft has high requirements on the surrounding wind environment during take-off and landing, and a sudden downburst will form a strong wind shear near the ground, which is likely to cause the aircraft to crash during take-off and landing, causing the crew to and passenger casualties

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