Airplane & the conveyer belt

[Anomalocaris]

The tread mill is just a red herring. Can an airplane get into the air without wind blowing? No.

some can.   they depend on direct engine thrust to create lift with tilting nozzle engines such as does the harrier, others uses dedicated downward pointing lift engines such as the Russian yak-38, and a number of Others pivots while engines downwards to generate lift, such as the Osprey, and a number of other VTOL concepts.

Short of lifting using engine thrust, there are also designs that uses engines to help the wing generate lift without forward motion.   Some blow exhaust closely over top surface of the wing, and also uses the exhaust stream to entrain andditional ambient air to create a sheet of high velocity air over the wing to create lift, such as the YF-15.  Others bleed air from the engine through ducts to blow over top of the airfoil to reduce stall speed.