Spacecraft

Spacecraft comprising a body having at least one face, at least one radiator carried by said face and at least one thermal insulation device carried by the radiator, said thermal insulation device comprising:

• a first screen device able to cover a first area of said radiator, said first screen device comprising a thermally insulating and flexible sheet and
• a traction device able to pull in a pulling direction so that the insulating sheet covers the first area in a mode referred to as deployed mode,
• wherein said thermal insulation device comprises further at least two springs able to generate a constant reaction force, said springs being preformed so as to roll onto themselves at rest, said springs being fixed to the insulating sheet, said springs each having a first end fixed to a traction device and a second end (44) fixed to the radiator;
• and
• wherein the traction device is configured to on the first end of said springs of the first screen device, said traction device being able to release the first end of said springs in order to expose the first area to the space environment in a mode referred to as exposure mode.