The friction test is carried out in summer on an annual basis. In spite of pretty heavy runway usage, the friction coefficient improved. Is this possible or was the test a flop?
2006-09-17 22:53:12 · 3 answers · asked by opid 1 in Science & Mathematics ➔ Physics
That makes sense to me--but it depends on what kind of runway and what you mean by "improve." Silly me, my first thought was a modeling runway! And I assumed that "improve" meant "decrease," but that was really an arbitrary decision. Still, in that case, the runway was used, people walked across it constantly, and the passage of their feet wore the surface smooth. You often notice similar smooth spots on benches, where everybody's butts have rested.
If you meant an airport runway, the same principal should apply. The runway would become smoother as use would wear off the rough protrusions. In addition, small amounts of rubber and oil deposits would, over time, fill in gaps and eliminate rough regions.
If you consider an "improved" coefficient of friction to be higher, not lower, then I'd be suspicious of those results.
2006-09-17 22:57:35 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
What sort of runway are we talking about? If it's planes I can never understand why they don't spin the wheels before touchdown and avoid those clouds of smoke, either a small motor or air scoops on each wheel would start them spinning.
2006-09-18 06:12:04 · answer #2 · answered by bo nidle 4 · 1⤊ 0⤋
Not...
The friction coefficient depend of surface properties... maybe you wiill have other kind of surfaces and then other friction coeffcient.
2006-09-18 06:02:27 · answer #3 · answered by Juan D 3 · 0⤊ 0⤋