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An Obstacle Assessment Method for Ultra-Long Runway

A technology of obstacles and runways, applied in the field of obstacle assessment of ultra-long runways

Active Publication Date: 2020-10-20
CHINA ACAD OF CIVIL AVIATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] But so far, the use of the limit parameter of 4,500 meters to evaluate the safety of airstrips is only based on experience, and there is no practical method for the construction of ILS for ultra-long runways in the future.

Method used

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Embodiment Construction

[0060] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0061] Obstacles that cause collision hazards are mainly considered in two aspects, one is obstacles along the specified flight path, and the other is obstacles that extend outward within a certain range along the specified flight path. The CRM model does not consider the visual phase below OCA / H and the maneuvering phase after landing, but the go-around phase is considered.

[0062] The following is an example to illustrate the composition of the OAS surface of a normal runway, as follows:

[0063] (1) Acquisition of modeling data

[0064] (2) Construct distribution function

[0065] Statistical analysis of the collected data shows that the vertical and horizontal deviation probabilities do not obey the Gaussian distribution, and the deviation values ​​are as follows: Figure 2a and Figure 2b shown. After further data analysis, Burgerhout proposed a probability...

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Abstract

The invention provides a design method of a super long runway and belongs to the civil aviation field. According to an obstacle assessment method for the super long runway, first, a probability modelof flight deviation of the super long runway along a flight path is constructed, and then an obstacle assessment surface (OAS) with a collision probability smaller than 10<-7> is constructed through the model, wherein the super long runway is a runway with length exceeding 4,500 meters. By use of the method, safety assessment of the influence an obstacle of the super long runway with the length exceeding 4,500 meters on flight can be realized, and therefore the safety level of plateau airport operation is ensured. Meanwhile, the method also can be used to obtain the OAS with the runway lengthwithin the range of (2,000, 6,000) meters.

Description

technical field [0001] The invention belongs to the field of civil aviation, and in particular relates to an obstacle evaluation method for an ultra-long runway. Background technique [0002] According to the expression in Section 1.4.8.4 of Chapter 1 of Precision Approach, Chapter 1 of ICAO Doc8168 5th Edition, Part 2 Traditional Procedures, Part 1, published in 2006, its composition is as follows: [0003] OAS (Obstacle Assessment Surface) is composed of approach surface, horizontal surface, go-around surface and side clearance evaluation surface. The approach evaluation surface is represented by W, the go-around evaluation surface is represented by Z, and the side clearance evaluation surfaces are represented by X and Y respectively. For the views and parameters, please refer to the document "ICAO Doc 8168, Ver.5, 2015". [0004] If during the ILS final approach, the height of obstacles around the runway does not exceed the obstacle evaluation surface of OAS, it can ensu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 李娜王仲
Owner CHINA ACAD OF CIVIL AVIATION SCI & TECH
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