v10 Chapter 2729： Fancy play (1/2)

Yes, they could tell that Qin Luo was really playing from the beginning.

”Row!”

After a long silence, Zhou Minggang nodded heavily.

There is no way, seeing Qin Luo's appearance is that his heart is determined, so that Qin Luo can change his mind?

Emmmmm, forgive them for less reading, they really don't have this ability!

Seeing the crowd, Qin Luo's face was filled with a bright smile, and said, ”Professors, there is one more thing.”

”Off-orbit technology is divided into active off-orbit and passive off-orbit. Which one do you think we should try first?”

Derailment is not a simple task.

He is divided into active and passive.

The conditions for distinguishing between the two are also very simple.

Whether it has the ability to change tracks.

Spacecraft with the ability to change orbit can directly provide the orbit-changing impulse from the engine, so the spacecraft will actively fall into the atmosphere after leaving its original orbit.

A spacecraft without active orbital change capability requires a special braking rocket.

The brake rocket is mounted on the spacecraft along the longitudinal axis, so that the rocket's thrust vector is consistent with the longitudinal axis.

First, the attitude control system adjusts the attitude of the spacecraft so that its longitudinal axis is at an angle θ with the local horizontal plane (called the braking angle). At this time, the direction of the longitudinal axis is called the braking direction. The thrust of the braking rocket acts in the braking direction for a period of time, so that the spacecraft gains an additional velocity ΔV in this direction.

Therefore, the speed of the spacecraft is changed from V1 to V2. Although the magnitude of V2 and V1 does not change much, the change of direction can make the spacecraft deviate from the original orbit to achieve the purpose of landing.

Compared with passive change, the maneuverability of active change is undoubtedly much better.

But correspondingly, the difficulty of the subject is much higher.

The time spent is usually several times that of passive orbit change research.

If the change is normal, Zhou Minggang thinks it would be better to take the initiative to change track.