Go-around risk detecting and evaluating method for aircraft

Abstract

The invention relates to a risk detecting and evaluating method, in particular to a go-around risk detecting and evaluating technique based on an error back propagation neural network. The risk detecting and evaluating method comprises the following steps of (1) building a flying status data set; (2) building a go-around surplus distance data set; (3) conducting risk assessment; and (4) determining a relation between go-around surplus distances and land collision risks. The go-around risk detecting and evaluating method is wide in application, can conduct risk measurement on any flying state of the aircraft, provides reasonable references for go-around maneuvering safety under emergency circumstances and improves go-around safety.

Description

technical field [0001] The present invention relates to a risk assessment method, in particular to a dynamic assessment technology for aircraft go-around risk based on error back propagation (Back Propagation, BP) neural network. Background technique [0002] When the aircraft is about to land, if the pilot thinks it is unsafe to continue landing due to obstacles suddenly appearing on the runway or the observation is affected by the low visibility of the weather, or the aircraft body temporarily malfunctions, the pilot should increase the thrust to interrupt the landing of the aircraft and restart the aircraft. The process of turning into a normal ascent state is called a go-around. Go-around is a backup for normal landing, and it is not used in general, but it is an important measure to ensure flight safety. [0003] Go-around is one of the standing flight maneuvers, and there are certain risks in its maneuvering process. When the pilot decides to perform a go-around oper...

AI Technical Summary

Problems solved by technology

After the go-around point is determined, if the go-around decision is made after flying over this point, the pilot does not have enough time to correct the deviation or the visual height is high, which will cause the aircraft to collide with the ground, resulting in the risk of go-around and accidents

[0005] The traditional go-around risk assessment method only qualitatively classifies the go-around risk based on a single go-around point, and cannot quantitatively express the changing characteristics of the go-around risk. The evaluation results are qualitative and single; the traditional go-around risk assessment method does not analyze the transition from normal flight status to The change of the state quantity of the aircraft itself in the go-around state, the analysis of the influencing factors of the evaluation is relatively limited; the traditional go-around risk evaluation method only uses the go-around point (a certain point in the flight space) as the basis for judging the go-around risk, and takes less consideration of the overall flight process of the aircraft , the real-time performance is poor; in summary, the traditional go-around risk assessment method cannot fully express the risks existing in the process of the aircraft's go-around maneuver in real time

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