why spacex rockets don’t burn up during re-entry?

Question

why spacex rockets don’t burn up during re-entry?

In: 1

Answer 1

The first stage just goes up and down, never getting to a very high velocity, more like just dropping a rocket from a high height with engines that can slow it down for a soft landing.

The second stage that deploys the satellites is orbiting the planet at a very high velocity, and it does burn up on reentry. SpaceX wanted to make this reusable too, but the burning up problem made it not worth it with too much added weight in heat shields and too much fuel needed to slow it down. So they’re accepting partial reuse until Starship comes online.

Answer 2

The first stage just goes up and down, never getting to a very high velocity, more like just dropping a rocket from a high height with engines that can slow it down for a soft landing.

The second stage that deploys the satellites is orbiting the planet at a very high velocity, and it does burn up on reentry. SpaceX wanted to make this reusable too, but the burning up problem made it not worth it with too much added weight in heat shields and too much fuel needed to slow it down. So they’re accepting partial reuse until Starship comes online.