Wind field risk assessment method through airborne radar

Abstract

The invention relates to a wind field risk assessment method, and particularly relates to a wind field risk assessment method through airborne radar. The wind field risk assessment method through airborne radar comprises the steps that airborne radar performs real-time measurement on a wind field of a target area so as to obtain the estimated value of turbulence intensity of the wind field, and digital reconstruction of the wind field is performed; flight dynamics simulation is performed by utilizing the wind field after digital reconstruction with combination of flight parameters so that triaxial movement acceleration and triaxial rotation acceleration when a plane crosses through the wind field are obtained; and discretization, fast digital Fourier transform, frequency band weighting, full duration mean square root calculation and weighted summation are performed on the results in turn so that an equivalent total amount of vibration of the plane crossing through the wind field is obtained, and then the equivalent total amount of vibration is compared with a preset indicator of the equivalent total amount of vibration and thus risk assessment of the wind field is completed. More visual and detailed wind field information can be provided by the wind field risk assessment method through airborne radar than existing radar does so that assessment of the wind field is more comprehensive and reasonable.

Description

technical field [0001] The invention relates to a method for risk assessment of a wind farm. More specifically, the present invention relates to a method for risk assessment of wind farms using airborne radar. Background technique [0002] Flying through dangerous wind fields will cause aircraft turbulence and large body overload, which will not only seriously affect the ride quality of passenger aircraft, but also lead to dangerous incidents such as cabin injuries. Passenger injuries occur frequently when encountering turbulence. [0003] At present, the detection and early warning of turbulent wind fields such as turbulence and micro-downstroke wind shear by aircraft in service mainly rely on detection equipment with weather radar as the core. Current meteorological radars widely use the Doppler coherent system, which can provide the average radial velocity and spectral width data of the wind field, which contain the average and variance information of the wind field velo...

AI Technical Summary

Problems solved by technology

This method has some disadvantages: (1) the cost is high, and the flight test through the dangerous wind field has great risk; (2) it is difficult to fully consider the pulse vibration by using the root mean square of the normal overload as the evaluation basis; (3) Evaluate the root mean square of overload without considering the impact of vibration frequency on human health and comfort evaluation; (4) There are vibrations in all axes of the aircraft, and the normal overload root mean square is only used for vibration evaluation in a single direction. one-sided

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