Satellites are transported in very specialized containers that will often be purged with dry nitrogen. Then after encapsulation in the faring, conditioned air o

Satellites are transported in very specialized containers that will often be purged with dry nitrogen. Then after encapsulation in the faring, conditioned air of whatever sort is pumped into the faring from rollout to launch. [Example air conditioning duct attached to a Thor-Agena](https://space.stackexchange.com/questions/39440/why-use-an-air-conditioning-blanket-instead-of-supplying-air-into-the-fairing https://space.stackexchange.com/questions/39440/why-use-an-a...)