If Lin Ju had to use a metaphor to describe the difference between riding a spaceship and other spacecraft, he thought the most similar experience would probably be on a roller coaster.
Unlike rockets and planes, Chapter 9 countered gravity with four air spike engines at the bottom; the two engines at the rear mainly provided thrust for horizontal movement, but both could be obtained simultaneously through attitude transformation.
For conventional space shuttles and rockets, the thrust source is relatively fixed, and the trajectory also needs to follow certain rules, most of the time Lin Ju could predict how the attitude would change in the next second.
But Chapter 9 was different; it was more like a quadrotor drone, with the four air spike engines providing a wide range of thrust vector adjustment, capable of flexibly switching attitudes under AI control.