How are the paint colors determined for rockets?
火箭上噴涂的顏色是怎么決定的？
原文地址：https://www.quora.com/How-are-the-paint-colors-determined-for-rockets
White is usually selected because it keeps the pre-launch rocket cooler than a dark color would. Cryogenic fuels boil off, while the rocket is on the pad. Anything that can keep the rocket cooler and not add mass is a cost savings.
通常火箭選擇白色是因為相對于黑色白顏色能讓準備發(fā)射的火箭保持在一個更低的溫度。在發(fā)射臺上的時候，火箭的低溫燃料會揮發(fā)，能讓火箭溫度低下來同時又不增加額外的重量就是在節(jié)約金錢。
Some rockets, for example the Saturn V, have black patterns. These are called roll patterns. They are there so that observers on the ground can detect roll axis rates on the vehicle.
有些火箭，比如土星 5 號，有黑色的部分。這些被稱為滾動圖案，那些部分存在的意義是為了讓地面的觀測者方便測量火箭的旋轉速率。
Some rockets have orange sections. Those sections are not painted. That is the natural color of a foam insulation that is used for those cryogenic sections.
有些火箭有黃色的部分。那些部分是沒有被噴涂顏色。那就是用于火箭上低溫部位的泡沫隔離材料的本來顏色。
