Roštilj mode vesoljskih plovil

In the Apollo spacecraft, there were various reasons why it was undesirable to allow these temperature extremes to exists for long. For example, test had shown that the heatshield material around the command module would crack and flake if it were allowed to get to cold, while the tanks for the RCS thrusters had to be kept at moderate temperatures at all times to šrevent freezing and overpressurisation. The simple solutiuon was to rotate the spacecraft gently around its long axis, side-on to the Sun. This technique was formally known as passive thermal control (PTC) but for many comentators, a far more descriptice term was the "barbecue mode"