How does the airplane find its way in the sky when it flies in the vast sky?

The course, altitude, and speed are guided by navigation in various places, and there are also navigation stations under the route in remote areas. For example, a civil aircraft will input the latitude and longitude of the parking stand into the computer before leaving the airport, as a starting point, fly away from the airport and set the altitude, speed and course according to the tower command, and hand over to the next air traffic control command after flying out of the air traffic control area.

Recognize the way according to the prescribed route and ground navigation.

1. Along the development of the aircraft, the earliest navigation tool used by the aircraft was only the compass, so the earliest navigation method was called landmark-compass pilotage, and the pilot determined the position and course of the aircraft through the landmarks and routes marked on the chart.

2. Later, people discovered the self-stability of the gyroscope, so they used the gyroscope to determine the course change of the aircraft, which is called inertial navigation, but inertial navigation has two disadvantages: the navigation error increases with time and needs to be constantly calibrated; The datum position must be entered before use. The subsequent appearance of radio navigation solved this problem.

3. Radio navigation is the use of radio navigation stations installed on the ground (VOR DME NDB TACAN OMEGA, etc.) to measure the position of the aircraft and determine the polar coordinates of the aircraft relative to the radio. In the 20th century, satellite navigation began to become popular. The current satellite navigation is mainly GPS navigation in the United States.

In modern heading transport aircraft, most of the above navigation methods are used together.

In fact, there are invisible "roads" in the sky, which are routes that have been explored and "repaired" in advance. The Civil Aviation Administration of China divides the "road" in the air into three layers according to the flight speed of the aircraft, just like the lanes on our flat roads. The flight of the aircraft on the route does not rely on the human eye to identify the "road", but completely relies on the electronic navigation system, which can automatically locate the latitude, longitude and altitude where the aircraft is located, and will direct the aircraft to fly at a certain altitude and route.

The route that an airline aircraft flies is called an air communication line, or route for short. The route of the aircraft not only determines the specific direction, departure and arrival points and stopover points of the aircraft, but also stipulates the width and flight altitude of the route according to the needs of air traffic control, so as to maintain the order of air traffic and ensure flight safety. (This is the definition) hypothetical diagram of the European space plane.

How exactly does an airplane determine its route in the air? First, the pilot inputs the departure and arrival airports, as well as the navigation points to pass through on the way, into the plane's computer. When the aircraft is lifted into the air, data is constantly exchanged between the navigation point and the aircraft, which guides the aircraft's automatic flight system to control the aircraft to the next navigation point.

That is, the line of the aircraft in the air is controlled by the ground navigation station.

Recognize the airplane and place it on the appropriate black shadow, it can fly in the sky.