There is no airspeed setting in fixed-wing follower. The airspeeds should either come from the path planner, e.g. if you want to cover *x* distance in *y* time, or should come from generic settings, which could roughly be lumped into cruise, climb, descent, and minimum sink.

There is a pretty decent mapping between these speeds for fixed-wing and for other aerial vehicle types. I don't see an immediate downside to renaming the UAVO "AirspeedSettings" and using it for all aerial vehicles.