Situation Awareness of Hazardous Mitigation for Transport Aircraft in Severe Atmospheric Turbulence

• Main Authors: TSAI,BING-RONG, 蔡秉融
• Other Authors: Chang,Ray-Chung
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/39960784210797374400

碩士 === 中華科技大學 === 飛機系統工程研究所 === 104 === Severe atmospheric turbulence has been a difficult issue for the aviation community. The main focus is the sudden plunging motion with abrupt changes in attitude and altitude, because it affects the flight safety the most. The evaluations of stability characteristics during sudden plunging motion through oscillatory derivatives of fuzzy-logic aerodynamic models were studied in the past few years. Although the fuzzy-logic aerodynamic models have robustness and nonlinear interpolation capability in predicting the degradation in stability and control characteristics, it can’t provide the improved control strategy and situation awareness in avoidance of passengers and cabin crews sustained injuries. To provide the mitigation concepts and formulate preventive actions for aircraft operation, a new study of situation awareness before and during the severe atmospheric turbulence encounters is undertaken. This thesis employs fuzzy-logic modeling technique to establish flight control models with the function of nonlinear dynamic inversion based on the datasets from the flight data recorder. The improved control strategy can be obtained through the flight control models. Then, situation awareness of hazardous mitigation can be determined based on the influence of crosswind, caused reasons of significant increase in angles of attack, and the improved control strategy. The necessary and appropriate applications to improve the flight controls of rudder, aileron, and elevator before and during severe atmospheric turbulence are demonstrated.