Quote:
Originally Posted by BlackArcher101
Not sure what the wind tunnel speed test on a car has in relation to this. The difference is that the car is not trying to move, it's actually fixed. It's true that the fan is to create wind for aerodynamics testing. The conveyor belt they run on is only to get real world results since a rotating tire drastically changes the way the air flows around the car. A couple pounds of extra drag or miscalculation can cost a car the race by a fraction of a second.
Yes, the belt will play a role in this, as does the forward motion of the plane. The belt will move the aircraft backwards, but once positive thrust is attained, the backwards speed will start decreasing until the plane is at a stand still relative to the air, but the wheels will be moving at conveyor speed. After that, the thrust will starting to move the plane forward (simply continuing it's positive acceleration), with the wheel speed increasing and the airspeed as well. The plane, after a longer than usual distance due to friction will take off.
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meh, i think im still gonna go with the plane NOT being able to lift off, I just dont see it working, but Ive been wring before so who knows.
I still think it all depends on how fast the belt is moving back against the plane, the thrust still has to overcome that no matter what no? Is it not the plane acutaly moving FORWARD that creates the air speed?