Determination method of wind shear load caused by downburst for passenger aircraft taking off and landing

Abstract

An embodiment of the present invention provides a method for determining a load of wind shear caused by a downburst during takeoff and landing of a passenger aircraft. The method includes: establishing a three-dimensional model according to structural information of the passenger aircraft; establishing a wind field model corresponding to the downburst , and add the three-dimensional model to the wind field model according to the position information of the passenger aircraft; divide the wind field model into different forms of grids by the preset grid division method; obtain the edge grid wind pressure of the wind field model and the wind field model For the type of wall boundary, the wind pressure data of each grid is calculated according to the wind pressure of the edge grid, the type of wall boundary and the division of the grid; the flight trajectory information of the passenger aircraft is combined with the wind pressure data of each grid to determine the flight trajectory of the passenger aircraft. Wind pressure data for the flight. The method can provide a method for studying the wind shear load caused by the downburst caused by the take-off and landing of the passenger aircraft, thereby increasing the safety of the passenger aircraft when encountering the wind shear caused by the downburst.

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 load of wind shear caused by downburst flow caused by the take-off and landing of passenger aircraft. Background technique [0002] As a form of thunderstorm strong wind, downburst is capable of causing disastrous strong winds at or near the ground. The formation mechanism of the downburst is that the uneven heating of the air by the sun produces the convective movement of the air. At high altitudes, more warm and moist air with strong buoyancy will gather. As the height increases, the warm and moist air gradually liquefies when it is cold. , its rising process stops. At this time, the liquefied air begins to accelerate and sink to the ground due to its increased density. When it hits the ground and begins to spread around, a downburst is formed. The aircraft has high requirements on the surrounding wind environme...

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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