| Zhou Li(周莉),Xu Haojun,Su Chen,Lin Min.[J].高技术通讯(英文),2012,18(1):90~95 |
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| Quantitative assessment of flight safety under atmospheric icing conditions① |
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| DOI： |
| 中文关键词: |
| 英文关键词: atmospheric icing conditions, flight safety, quantitative assessment, risk probability, support vector regression, particle swarm optimization |
| 基金项目: |
| Author Name | Affiliation | | Zhou Li(周莉) | | | Xu Haojun | | | Su Chen | | | Lin Min | |
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| 中文摘要: |
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| 英文摘要: |
| A quantitative assessment method is proposed to sense the specific effects of atmospheric icing conditions on flight safety. A six degree-of-freedom computational flight dynamics model is used to study the effects of ice accretion on aircraft dynamics, and a pilot model is also involved. In order to investigate icing severity under different icing conditions, support vector regression is applied in establishing relationship between aircraft icing parameter and weather conditions. Considering the characteristics of aircraft icing accidents, a risk probability assessment model optimized by the particle swarm method is developed to measure the safety level. In particular, angle of attack is chosen as a critical parameter in this method. Results presented in the paper for a series of simulation show that this method captures the basic effects of atmospheric icing conditions on flight safety, which may provide an important theoretical reference for icing accidents avoidance. |
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