Do you guys know that old helicopter joke: “What is that big thing on top? A fan. The moment the thing is turned off, the people inside start sweating.”
I think once again, Chuck may have been taken things way to literally. Please don’t try this at home, no matter how hot it gets. It’s just a cartoon!
Even though the joke probably refers to the rotors turning in the air (which is always a good thing and we go through great lengths to make sure they keep turning), there is some truth to it that relates to reality. Imagine, during fire season, having your car parked in the sun until noon (You can use window shades, that’s fine. But you need to take them out when you get in the car), then get in wearing a flight suit and helmet and wait about 10 minutes before you turn on the AC in your car. That is about how long it takes going through the check list items in a Skycrane before you start turning rotors and the AC doesn’t turn on until then. Those 10 minutes feel pretty long, let me tell you 😉 And some of our machines don’t even have AC, like the one I’m flying this summer.
Also, almost all smaller helicopters I have flown for fire and utility in the past don’t have AC either to save on weight. They get off the ground quicker most of the time where the “FAN” will move some air bringing a little relief together with gaining altitude, but not if you are stuck on the ramp in North Las Vegas for example, waiting for clearance through Nellis Airforce Base airspace during Red Flag Operations. But we do it because we love it 😉