>Atmospheric re-entry experimental spacecraft
Because the speed of the spacecraft orbiting the Earth is about 8km per second, the kinetic energy of the spacecraft has a tremendously large value.
When the spacecraft is returning to Earth, the kinetic energy is changed into thermal energy and the surface temperature of the spacecraft grows enormously.
If no precautions are taken for the spacecraft surface, the spacecraft will burn out quickly.
In order for the spacecraft to return safely to Earth, a research of an experimental spacecraft with ultra-light thermal protection materials is under study.
— Under construction —