When does a fighter aircraft have maximum speed?

Answer 1

Like all aircraft, a fighter would have maximum speed at full throttle in a dive. In reality however, this seldom occurs. In many aircraft this puts extreme stress on the frame which is not desirable, and also running the engine at full throttle stresses the turbines and expends a LOT of fuel. In many fighter jets I have dealt with, we actually had a thin wire locked across the throttle quadrant so the pilot could only use 90-95 % of it's potential normally. - However he could push the lever to break the wire if needed.