飞跃北极数学模型(英文板)(编辑修改稿)

飞跃北极数学模型(英文板)(编辑修改稿)内容摘要：

it:km)The distance between Beijing and A1:The distance between A1 and A2:The distance between A2 and A3:The distance between A3 and A4:The distance between A4 and A5:The distance between A5 and A6:The distance between A6 and A7:The distance between A7 and A8:The distance between A8 and A9:The distance between A9 and A10:The distance between A10 and Detroit:Direct from Beijing to Detroit:Along the flight path of the original total time of flight：Along the direct flight from Beijing to Detroit total time flight:Time saved:By paring the results of the above methods and the actual situation,they are consistent with each means the report of the time saved from Beijing to Detroit is 4 hourshas scientific basis. The earth as an ellipsoidWhen we assume that when the earth is rotating ellipsoid，it’s told that the major semi axis (is the radius of the earth), and semiminor axis ,which is differ from . We can assume ellipsoid along the minor axis by the pression of the sphere obtained, if we ignore the small gap between the and and the sphere of the original points such as ,which are in the ellipsoid surface after pression. What39。 s more, the greater the latitude difference between two points on the arc length of the pressed the greater the points on the same latitude, little change in the pressed arc length.The conditions given by the subject shows: the latitude of the difference between adjacent points of are , the difference of latitude between Beijing and Detroit is ,and it39。 s a small here the pression method we use is effective and the pression ratio is constant。 Here es another situation:when assuming the Earth is spherical,we have calculated the length of the route,and put this result multiplied by ,so we can get。