Have a look at this video to see the same principle of jet pumping in action with a rocket motor.
You can also see the effect of entrainment from a rocket engine in this example.
Starts test firing at 8min into the video.
Perhaps it may be possible to redirect some of the exhaust from...
If the venturi effect is applied to the lift on a wing, then an aircraft would never get off the runway because the venturi airflow under the wing would cause the aircraft to be sucked downward to the ground. This is obviously not the case.
The fact that an aircraft takes off from the runway...