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re: Can this 747 take off?
Posted on 4/11/24 at 9:07 pm to meansonny
Posted on 4/11/24 at 9:07 pm to meansonny
quote:
When car brakes lock up, can the car skid? Or does the car just stop that instant.
It skids to a stop, decelerating the whole time.
quote:
With enough thrust, the friction on the wheels is just a weak memory.
Well the wheels would just spin faster and faster until they burned up. Then you have metal on treadmill. Like a 747 trying to take off without wheels grinding down a runway. I'm sure that'll work out fine.
Like the other poster said if they all hold up equally the plane goes nowhere. If the treadmill breaks first or couldnt keep up the plane takes off. If the tires go or engines lose out first it doesn't.
But the treadmill is the only thing that is said can equally match the speed of the wheel rotation in the question. So it's the inifinte one in this case.
This post was edited on 4/11/24 at 9:09 pm
1
Posted on 4/11/24 at 9:13 pm to NATidefan
You are late to the party.
It is physically impossible for the treadmill to match the speed of the jet planes freewheels.
The reference in the thread is "a magic treadmill". Because it would take magic on the treadmill or some sort of regulator on the plane's wheels to keep them in sync.
And if there is a regulator on the plane's wheels to keep it from spinning too fast (so it can keep pace with the treadmill), the jet propulsion is just going to push the wheels forward anyway.
It is physically impossible for the treadmill to match the speed of the jet planes freewheels.
The reference in the thread is "a magic treadmill". Because it would take magic on the treadmill or some sort of regulator on the plane's wheels to keep them in sync.
And if there is a regulator on the plane's wheels to keep it from spinning too fast (so it can keep pace with the treadmill), the jet propulsion is just going to push the wheels forward anyway.
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