Calculation method of thrust target value for civil aircraft
Thrust management is one of the important functions of civil aircraft flight management system.In different flight phases and flight states of the whole route,the flight management system needs to calculate the aircraft thrust requirements for engine,and then use the required thrust as the target thrust to generate the command of engine throttle control.Of which,thrust target value calculation is the core of thrust management.According to different flight characteristics of each phase,the calculation method of aircraft thrust target value was studied by using flight dynamics.The calculation process of climb,cruise,descent phases at different flight modes were analyzed in detail.Taking Boeing 737-800 flight record data as an example,the thrust target value calculation method was simulated and verified.The results showed that the calculated thrust value was consistent with the flight performance theory,and the relative error between the calculated thrust and the actual flight record data in typical flight phases was less than 3％.The thrust target value calculation method can provide a reference for civil aircraft thrust management system design.
civil aircraftthrust managementthrust target value calculationflight performanceflight dynamics
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