How long does it take for China to fly to the United States?

There are two kinds of flights from China to the United States, direct flights and connecting flights. Depending on the departure and arrival in the city, it usually takes more than ten hours to fly directly. It takes more than twenty hours to transfer.

As we all know, the straight line between two points is the shortest, so why should the plane from China to the United States take a detour from the Bering Strait instead of taking a straight line? As we all know, there is a Pacific Ocean between China and America. Wouldn't it be closer to cross the Pacific Ocean directly? In fact, there are three main reasons why airlines do this.

First, the main reason is that this route is the shortest, "the shortest route"? Controversy followed. How is that possible? Obviously there is a curve on the map, isn't it the shortest straight line between two points? Bian Xiao, you are mistaken! Actually, no. The principle is simple. The map we are looking at now is a plan, and the earth itself is a sphere. The shortest distance between two points of a sphere should be a plane, the distance from these two points to the center of the earth. The arc formed on the sphere is the shortest distance. The straight lines we see on the map are completely different. I don't need to say anything. We can understand directly by looking at the picture.

Second, fly with the wind. People who have studied high school geography should know that this route to the United States belongs to the westerly belt, between the subtropical high belt and the subtropical low belt. The specific principle will not be explained. Flying with the wind not only reduces fuel consumption, but also greatly shortens the time to arrive in the United States, which can save fuel and shorten the time. You may find that when the plane returns, the time from the United States to new york is obviously more than one hour. This is because the plane didn't go back the same way.

Third, flight safety. As we all know, there is no land in the Pacific Ocean. Although there are many small islands, most of them have not been developed, and no country is willing to spend huge sums of money to build airports. There is a place that has been uninhabited for a long time. If the plane flies there for a long time and suddenly has problems, there will be no airport landing. In addition, the situation at sea is complex, many emergencies are unpredictable, and the probability of accidents is relatively high. Because it is far from land, it is not conducive to rescue.