Study on a Model of Flight Fatigue Dynamic Risk Index

摘要

Fatigue has been a threat to flight safety. Based on former researches about pilots' fatigue, fatigue risk and prevention measures of fatigue, a flight fatigue dynamic risk index is developed to evaluate the fatigue risk during flight operations. Flight fatigue dynamic risk index is defined as the ratio of required and human alertness during flight operations. The required alertness is the function associated with weather conditions, airport conditions, phase of flight, etc., while pilot alertness is calculated by an alertness prediction model which is based on the concept of alertness energy and constructed by human circadian oscillator, alertness energy consumption and restoration. The flight fatigue dynamic risk index prediction model should improve fatigue risk management system (FRMS).