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User Name Thread Name Subject Posted
MarkS BS: The Mythbusters airplane takeoff problem (57* d) RE: BS: The Mythbusters airplane takeoff problem 02 Nov 12

Makes sense Hawk

If you are flying forward at, say, 500 mph and in the jet stream with a 200 mph headwind, your ground speed is 300 mph. You are indeed flying but not going anywhere real soon.   This accounts for the flying time differences during long east/west vs west/east flights.

So if you are moving forward a 50 mph and the conveyor moves you back at 50 mph, you go nowhere, at a ground speed of zero - which will likely not generate enough lift to take off.

Good thing the jet stream does not move as fast as the speed of modern airliners too. A plane at 500 mph going into a headwind of 500 mph will loose lift and act like a brick with wings. I think the correct term is "stall."


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