How many kilometers is the near earth distance of the Shenzhou 6 manned spacecraft in orbit

390 km from the ground.

The normal operating altitude of the Chinese space station is 400,450 km. For the docking of the space station with cargo spacecraft and manned spacecraft, the space station will drop in altitude, and the orbital altitude will rise to the normal operating altitude after docking.

In order to dock with the Shenzhou-12 spacecraft, the Tianhe Tianzhou complex has descended to an altitude of 390 kilometers a few days ago.

The Shenzhou-12 spacecraft was successfully launched at 9:22 a.m. today (June 17).

It was at the Jiuquan Satellite Launch Center, which also received a lot of attention at that time, and the tribe was in the Inner Mongolia area, and the main purpose of the land trip at that time was to explore the aerospace industry.

There are a total of 11 manned spacecraft in Shenzhou.

The Shenzhou series of manned spacecraft was launched by a Long March-2F rocket specially developed for it, and the launch base is the Jiuquan Satellite Launch Center, which is located at the Sizi Sakura Pants Leaky Wang Banner Space Landing Ridge in Ulanqab City, central Inner Mongolia.

The Shenzhou spacecraft is a spacecraft developed by China itself, with completely independent intellectual property rights, which is at or better than the international third-generation manned spacecraft technology. The Shenzhou spacecraft is composed of three cabins and one section, that is, a return module, an orbital module, a propulsion module and an additional stage, and is composed of 13 subsystems.

Total 40192km 3 4=Minute a) 40192 90=One minute away) Minute Journey = One somersault walk) References: Person, computer.

China's manned spacecraft "Shenzhou-6" flies about 28,440 kilometers per hour in orbit around the earth. This is the theoretical speed.

The speed at which an object moves in a uniform circular motion around the Earth near the ground is called the first cosmic velocity.

First, cosmic velocity refers to the velocity that a spacecraft must have when moving in a circular motion along the earth's surface, also known as orbiting velocity. First, there are two aliases for cosmic velocity: the minimum launch speed of the spacecraft and the maximum operating speed of the spacecraft.

In some cases, it is said that when a spacecraft is moving at the first cosmic velocity, it means that the spacecraft is moving along the Earth's surface. According to the theory of mechanics, it is possible to calculate v1 7 9 km seconds. The spacecraft is orbiting at an altitude of several hundred kilometers above the surface of the ground, and the gravitational pull on the ground is smaller than that on the ground, so its velocity is slightly less than v1

When a man-made object moves in a uniform circular motion around the Earth near the ground (height ignorance), its orbital radius is approximately equal to the Earth's radius r, its centripetal force is the Earth's gravitational attraction to the satellite, and its centripetal acceleration is approximately equal to the gravitational acceleration at the ground.

The gravitational force exerted on the object = gravitational force = centripetal force when the spacecraft moves in a circular motion along the earth's surface, i.e., mg=gmmr2=mv 2 r

mg=mv^2/r

So v 2 = gr

r ground = m g = m s

v= km/s

Calculation formula: v1 gr(m s), where g , r