So... what do the numbers correspond to? That is, if I hear a mu of 33,
what can I expect?
http://www.newton.dep.anl.gov/askasc...9/phy99x80.htm
Yes, I know that much. But the coefficient of friction depends on what
I am contacting the runway with. And a mu of 33 implies epoxy, not
friction. (I would presume that they mean .33 and leave out the point,
but it may well mean .033, leaving out the .0)
To decelerate uniformly from 100 feet per second (about 60 knots) to
zero in 1000 feet would require 20 seconds, and deceleration of 5 feet
per second per second. This is about 1/3 the acceleration due to
gravity (for the pedants, yes, it's in a different direction). A mu of
about 1/3 (or about .33) would provide the necessary force, assuming the
entire weight of the aircraft is on the landing gear (not that great an
assumption, but good for starters).
So, what are representative mu for various conditions I would encounter
upon landing? (dry pavement, wet pavement, ice, snow, packed snow,
grass, fifth graders...)?
Jose
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