radiators have no influence on speed

[Tiger27]

Originally Posted by IvanK

Err I ride jetstreams for a living they don't affect TAS just the Groundspeed.

Whether I am in the jetstream or not the Mach number and or IAS and the TAS are the same, the Groundspeed changes though.

Having known and flown (only in games unfortunately)Ivan for a few years, I would just say, take his advise on this, he is a real commercial and ex military pilot, also if you give it some thought, it is pretty obvious that what Ivan is saying is true, it affects ground speed but not airspeed, in other words your not actually travelling as far, but you are still going at the same speed.