Originally Posted by Montag DP
You're arguing a strawman. I never said the plane was moving at constant speed, only that if the model's speed is equal to the efflux velocity, no net thrust is produced.
The fact that it is not moving at a constant speed in this situation should have been obvious when I said that the plane would slow down until thrust increases enough to counter drag.
Sorry, I have no idea what a strawman is.
Are we not talking about a model moving at its maximum speed which would be (more or less) constant?
Of course there is no net
thrust, the sum of drag and thrust is zero.