The meteor flashed across a shining band of light, which looked like a bolt of lightning and disappeared into the night sky in an instant.
Rockets in China usually fly east or south after take-off.
First, fly east.
Chang Wuquan said that the direction of the earth's rotation is from west to east. If the rocket flies eastward, it is equivalent to "downwind". With the help of the speed increment brought by the earth's rotation, manpower and fuel can be saved. So rockets in China usually fly eastward. Of course, this east is not absolutely due east, but flies eastward within a certain range according to the actual launch demand.
Second, fly south.
If the passenger's destination is sun-synchronous orbit, the rocket can only fly south or north, which is determined by the inclination angle of the sun-synchronous orbit, Chang Wuquan said. For example, when the Long March II-C rocket launches an Earth observation satellite, the inclination of the target orbit is about 97, and its launching direction is about 19 1 (that is, the south).
The principle of rocket launch:
Rocket launch uses the reaction force of force, that is, a thrust opposite to rising to make it rise. A rocket is an aircraft propelled by the reaction force generated by the working fluid injected by the rocket engine. It carries combustibles and oxidants, and does not rely on oxygen in the air for combustion. It can fly in the atmosphere and outer space. With the consumption of rocket propellant in flight, the rocket mass is decreasing, and it is a variable mass flying body.