Airplane + Conveyor Belt
Airplane + Conveyor Belt
Out of context: Reply #52
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- ribit0
"the thrust is fighting the negative momentum, like paddling up river"
sure, but remember you have big engines with lots of thrust, and this is nothing like the effect on the boat.... the planes only contact with the conveyer is through its freewheeling wheels, which simply have to spin to match the higher relative speed of the conveyer, so you have:
- normal takeoff groundspeed
- normal takeoff airspeed
- wheel rotation double its usual amount (a small amount of extra drag to overcome, but not a problem given the thrust reserves of all aircrraft)