Abstract
In this study, the effect of the air temperature on the flight performance of B747-400 was investigated for climbing and cruising and the correction coefficients corresponding to the deviation of temperature from the international standard atmosphere were computed. By applying these correction coefficients to the basic flight performance in the standard atmosphere, we can easily obtain the flight performance in arbitrary air temperature. Based on the flight performace corrected for the air temperature, a number of minimum fuel route simulations using forward dynamic programming were performed. From the results of the simulations, it was found that compared with the present daily routes provided by the U.S. Air Route Traffic Control Center, about 3% fuel saving was achieved on the average on the minimum fuel routes between Narita and San Francisco.
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