Multi-dimensional aircraft collision conflict risk evaluation system
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A risk assessment, aircraft technology, applied in traffic control systems, instruments, flight plan management, etc., to solve problems such as conflicts
Active Publication Date: 2020-07-17
CIVIL AVIATION FLIGHT UNIV OF CHINA
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[0004] However, Cao Xiaowen's research did not improve the model, so that the current situation that the calculation of the collision probability results using the EVENT model formula requires a large amount of statistical data h
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Embodiment 1
[0055] A flow chart of a corresponding method for a multi-dimensional aircraft collision risk assessment system is shown in figure 1 As shown, the steps include:
[0056] S1, according to the size parameters of the aircraft model, the distance between the own aircraft and other aircraft in the three dimensions, and the standard deviation of the yaw distance, calculate the probability of the overlap between the own aircraft and other aircraft in the three dimensions.
[0057] S2, according to the probability that the own aircraft overlaps with other aircraft in the three dimensions, calculate the frequency of the lost interval of the own aircraft in the three dimensions every hour.
[0058] S3, according to the frequency of lost separation per hour in the three dimensions of the own aircraft, the speed difference between the own aircraft and other surrounding aircraft, the size of the aircraft type, the logarithm of aircraft flying in the same direction and opposite direction, ...
Embodiment 2
[0094] Assume that during a certain route flight phase, the width a between two routes 2 -a 1 =32km, take d=45km, σ 0 = 3.0, λ σ =0.03 Aircraft ground speed GS=900km / h, then T=180s, assuming V=V 1 =V 2 =V 3 U=U 1 =U 2 =U 3 W=W 1 =W 2 =W 3 , look for relevant information as shown in Table 1:
[0095] Table 1 parameter value table
[0096] parameter value E[S] 0.61 E[0] 0.01 L 120n miles U at
480konts U 13 konts V 60 konts W 1.0 konts Pz(0) 0.48
[0097] Now take two aircrafts B747-300 and A380 as the research object, seat A is B747-300, seat B is A380, take the average of the fuselage length, wingspan length, and fuselage height, then there is λ x =71.7m, λy =69.7m, λ z = 21.7m, bring these parameters into the calculation:
[0098]
[0099]
[0100] f 1 =1.2683×10 -9 times / flight hour
[0101] Refer to the aircraft altitude data, assuming the initial altitude difference H 2 -H 1 is 0.7...
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Abstract
The invention discloses a multi-dimensional aircraft collision conflict risk evaluation system in the field of civil aviation aircraft collision conflict prediction. The system is used for executing the steps of S1, calculating a probability that an aircraft overlaps with other aircrafts in three dimensions; S2, calculating loss interval rates of the aircraft in the three dimensions; S3, solving the probability that the aircraft collides with the other aircrafts in three dimensional directions; S4, comparing the collision probabilities of the aircraft in three dimensional directions to obtaina maximum probability and a dimension corresponding to the maximum probability; and S5, carrying out difference value calculation on the solved maximum probability and a safety standard, and giving safety evaluation according to the difference value. In the invention, multi-dimensional calculation of the collision conflict risk probability of the aircraft is realized. And the maximum value of thecollision conflict risk probability is solved, and a judgment basis for comprehensive safety evaluation of the aircraft is provided based on the maximum value.
Description
technical field [0001] The invention relates to the field of civil aviation aircraft collision conflict prediction, in particular to a multi-dimensional aircraft collision risk evaluation system. Background technique [0002] With the continuous development of my country's civil aviation, the importance of civil aviation safety has been increasingly valued. The increase in the number of flights and the number of routes has reduced the distance between aircraft under the RECAT standard. How to ensure that these improved separation distances are safe and how to ensure that the risk of collision between aircraft is always outside the specified safety risk is the focus of our research. [0003] In 2010, Cao Xiaowen proposed the use of EVENT model for lateral collision risk research (Cao Xiaowen. Research on lateral collision risk based on EVENT model [J]. Technology and Market, 2010,17(02):14.), in Reich On the basis of the collision risk model, an EVENT-based lateral collisio...
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