Why can Dongfanghong 1 keep moving around the earth?

Dongfanghong No. 1 is China's first artificial earth satellite, which was successfully launched on April 24, 1970, which means that China has become the fifth country that can manufacture and launch artificial satellites after the United States, the Soviet Union, France and Japan. The satellite weighed 173 kilograms, had a design life of 20 days, and ended up working for 28 days, ceasing to work on May 14, 1970. But it is still moving around the earth, and it has been flying for 49 years, and scientists believe that Dongfanghong-1 will continue to move around the earth for a long time.

Dongfanghong-1 was sent by the Long March-1 carrier rocket into an orbital motion of 441 kilometers at perigee and 2,368 kilometers at apogee, and the atmosphere in this range is already extremely thin, and Dongfanghong-1 will be affected very little, so it will continue to move for a long time. When designing, Dongfanghong No. 1 pasted a lot of reflective coating materials, if you master the movement track of Dongfanghong No. 1, about when it will enter, we can find it in the night sky. If you go to find a satellite real-time monitoring software, you can find the trajectory of Dongfanghong 1.

The following is the real-time motion track of Dongfanghong No. 1 that I found on a ** last year.

Dongfanghong No. 1 has long run out of fuel, and it is now moving around the earth, relying on the earth's gravity to provide centripetal force. Due to the high orbit of Dongfanghong-1, the atmosphere is very thin, and without the frictional resistance of the air, its speed will not decrease, and then it will not re-enter the atmosphere. For example, the orbital altitude of the current International Space Station is generally not more than 400 kilometers, so it will be affected by air resistance at all times, so it needs to constantly consume fuel to increase its orbital altitude.

The successful launch of Dongfanghong 1 opened the prelude to China's space exploration, which is of great significance to China's aerospace, and some people propose to bring Dongfanghong 1 back to the Earth Existence Museum, in fact, this is not good, not to mention whether it can be technically realized, so that Dongfanghong 1 runs on the earth orbit is of greater significance.

The black hole of literature and science, the **** network invasion and deletion.

Because of its high position, it is subject to some space magnetic effects. It simply doesn't come down. If you want it to come down, you have to charge it with a lot of energy, but this is not worth it at all, so let it go.

I think it's a gravitational effect. Although Dongfanghong 1 has no power, he will continue to move until he is destroyed by the gravitational pull of the earth.

It can only move around the earth, the main reason is that its trajectory rotates back and forth like this, and the system is set up in this way, which is also the reason why Dongfanghong 1 was launched at that time.

Dongfanghong No. 1 is China's first artificial earth satellite. And since it is a satellite, it must naturally orbit the planet Earth. As for the reason, of course, there is a trajectory set by human beings.

The orbit of Dongfanghong-1 is particularly high, and it has very little air in its position. Then it can only go around the earth like this, it can't stop, the main thing is that there is too little air.

"Dongfanghong No. 1"The orbit of the satellite is 114 minutes.

The flight orbit is a near-Earth elliptical orbit with a perigee of 439 km, an apogee of 2384 km, and an inclination angle between the orbital plane and the Earth's equatorial plane.

On April 24, 1970, China's first artificial earth satellite "Dongfanghong 1", designed and manufactured by itself, was successfully launched by the "Long March-1" carrier rocket. The orbit of the satellite is 439 kilometers from the closest point of the earth, the farthest point is 2,384 kilometers, and the angle between the orbital plane and the earth's equatorial plane orbits the earth for 114 minutes.

So it's 114 minutes.

Dongfanghong-1 can still surround the earth and has not crashed into the atmosphere so far, because Dongfanghong-1 is equipped with solar panels, and it has been relying on solar panels to fly in space and keep itself from crashing.

It can be considered that Dongfanghong has been affected by many forces such as space and the earth's gravity after ascending into space, and the balance between these forces has just reached a balance, so Dongfanghong 1 has not fallen yet.

Just as the earth is not pulled into the sun by the sun's gravity, there is no gravity in space, and the moving objects will continue forever, and after having a stable orbit, Dongfanghong-1 will always orbit around the orbit.

The earth has traction on Dongfanghong-1, and Dongfanghong-1 is in a weightless state after ascending into space, and only needs a little traction to move, while the earth has such traction.