Quote:
Originally posted by Mobycat:
That's flawed. You are now moving the glider in relation to the *calm* air - making it no longer calm to the glider.[/QB]
His example is not flawed. In it, the winch/truck/plane-not-on-a-conveyor (or on a conveyor, as it turns out) replaces a prop/turbine as a means of propulsion. None of these means are influenced by the conveyor.