Wither invite!
Common saying says, "The day holds the post of you high to fly " however actually, when a lot of airliners are flying, always like the course of a few do with sb unconscious, go to Europe from our country Shanghai for instance Switzerland, the plane is not direct take the air line, pass from Anhui, in the sky must go to Beijing first stroll is curved, is this why?
Actually not only be to Switzerland, the plane of great majority of area of our country the eastpart part, in the process that flies to western country, can circle Beijing abduct first curved, look on the map, resembling was to walk along greatly orthogonal, this Beijing abduct also is called later Beijing big right angle.
Someone says, two linear the shortest, why should expend oily quantity to take far route?
Above all the earth is a circle, the map of the world that we see at ordinary times is booth makes the same score a ground to come, what see on the map is linear arrived spherical on, turned a turn into curved arc, saying to look so was to circle remote region, actually perhaps closer.
On the other hand, if plane from Shanghai all the time westerly flies should pass Qinghai-Tibet Platean area, too high height above sea level can affect plane voyage.
In fact because plane headway is rapid, the amount is much, the line that the plane sails has specific provision in the world, in our country inland, at present most airspace is not opened to civil aircraft.
If foreign plane wants from our country transient, must fly from Beijing, say to there is road in the sky so, have a piece of aeriform net however, all and transient airlines must fly according to the course that has planned.
If do not obey orders, do not allocate a flight according to what Beijing directs a center, the sequential likelihood that brings about then is about conceited.
