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| Fuzzy Comprehensive Evaluation of Helicopter Flight Risk under Icing Conditions |
| Received:March 21, 2020 Revised:April 15, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.11.012 |
| KeyWord:icing conditions flight risk fuzzy comprehensive evaluation analytic hierarchy process |
| Author | Institution |
| TANG Yang-gang |
Aircraft Strength Research Institute of China, Xi′an , China |
| ZHANG Hui |
Aircraft Strength Research Institute of China, Xi′an , China |
| WU Jing-tao |
Aircraft Strength Research Institute of China, Xi′an , China |
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| Abstract: |
| The work aims to improve the flying safety of helicopter under icing conditions and evaluate the flight risks. A flight risk evaluation method was established based on the fuzzy comprehensive evaluation method, which took the effects of icing weather conditions, anti-icing/de-icing system status and pilot experience level into consideration. Based on the icing strength, the 4-level flight risk classification method was established. The weight of each factor was determined by analytic hierarchy process. Then, the normal distribution membership function was used to establish the evaluation matrix. The weighted average method was used to the weight set and the evaluation matrix. The evaluation result vector was processed to classify the final flight risk. The method was reasonable and feasible. |
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