v10 Chapter 2927： Hold your breath (1/2)

The mimicry experiment soon began, and the shadow of the spacecraft appeared on the big screen of the laboratory.

Then the spacecraft rose higher and higher and soon entered the predetermined orbit.

At this moment, everyone held their breath.

The spacecraft enters the predetermined orbit. This is the prerequisite for the start of the orbit change experiment. If this step is not done, then don't mention the active orbit change. The entire experiment is a failed experiment.

One minute, two minutes, three minutes...

”The spacecraft successfully entered the predetermined orbit.” A crisp rising tone sounded in everyone's ears.

The track is successfully connected!

Qin Luo squeezed his fists in excitement. Although he had expected it, when he saw it with his own eyes, Qin Luo still couldn't contain his excitement.

From this point of view, China’s manned spaceflight has taken a big step forward!

”Professor Zhou, when shall we start the next experiment?” Qin Luo turned to look at Zhou Minggang.

”According to the speed of our spacecraft, it should take about 1.5 hours to orbit the ground.” Zhou Minggang said, ”And the perigee will appear in 2 hours.”

”The spacecraft will enter the active orbit change program in 1 hour and 50 minutes and start to change orbit!”

”Professor Qin should know that throughout the world's experimental reports, the success rate of perigee changes is the greatest.”

Qin Luo nodded, indicating that he understood.

Indeed, as Zhou Minggang said, when the perigee changes its orbit, the gravity of the earth is the greatest, and it is also the best place to implement the orbit change.

This has been verified by countless experiments in the world.

In this way, after running smoothly for more than an hour, the spacecraft began to decelerate. At this time, the centripetal force provided by gravity is greater than the centripetal force required for circular motion, so the spacecraft moves centripetally, and the orbits become elliptical.