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#151
11-23-2005, 02:57 PM
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Re: think about this...
[ QUOTE ]
You realize that in your OP, wheel speed = anything, plane speed = 0. Obv, if the plane isn't moving forward relative to the air, it doesn't take off. Unless, of course, your plan was to phrase a question with a clear answer, then try to confuse people so you would have a big thread. [/ QUOTE ] I've said this multiple times now - at no point in this thread did I say plane speed = zero. I suggest following Patrick's advice and creating a FBD. 
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#152
11-23-2005, 02:59 PM
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Re: think about this...
hey, i dont post here often, but i do read OOT a bit, but this is the dumbest question ever; im the guy NLSoldier has a bet with.....i need a way to settle this bet......if anyone can help me out with this, it would be greatly appreciated; ive tried to explain the concept of lift, but he just doesnt get it
the only way a plane gets into the air is because of lift; its the only way....to get lift, you need wind over a wing, in this case there is wind, so no lift, so no takeoff im an aerospace engineering student, and he wont take mine or anyone of my aerospace's buddies answer; please help me settle this! i got $400 on it EDIT: ive offered to take a poll of 15 aerospace engineering professors, and even if one of them says the plane takes off, i would admit defeat...thoughts?
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#154
11-23-2005, 03:00 PM
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Re: think about this...
[ QUOTE ]
im an aerospace engineering student [/ QUOTE ] not for long.
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#155
11-23-2005, 03:01 PM
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Re: think about this...
[ QUOTE ]
i had $400 on it [/ QUOTE ] FYP.
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#156
11-23-2005, 03:01 PM
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Re: think about this...
[ QUOTE ]
The interesting question to me at this point is if the brakes on the wheels are applied, what happens. Also, if the plane isn't using any thrust to move forward but the belt is moving backward, do the wheels just spin or does the entire plane move? [/ QUOTE ] The answers to these questions all depend on your assumed friction coefficients, the exact workings of the conveyor, and assumptions about the plane's engines being strong enough to overcome these kinds of forces (which they probably are).
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#158
11-23-2005, 03:02 PM
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Re: think about this...
a couple key words to think about:
thrust accelerate
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#160
11-23-2005, 03:04 PM
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Re: think about this...
[ QUOTE ]
hey, i dont post here often, but i do read OOT a bit, but this is the dumbest question ever; im the guy NLSoldier has a bet with.....i need a way to settle this bet......if anyone can help me out with this, it would be greatly appreciated; ive tried to explain the concept of lift, but he just doesnt get it the only way a plane gets into the air is because of lift; its the only way....to get lift, you need wind over a wing, in this case there is wind, so no lift, so no takeoff im an aerospace engineering student, and he wont take mine or anyone of my aerospace's buddies answer; please help me settle this! i got $400 on it [/ QUOTE ] If it helps, I'm not sure NLSoldier is right, but you're wrong.
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