Re: Hydroplaning, Air Force insight

[James Marriott <marriott@micron.net>]

Haudi,

Sure. Both use rapidly-rotating machinery to move air in a manner that
begets movement "that-a-way." Boost on, bruthas!

cu
James
'87 4kq, 0.9 bar
'89 200q, 1.4 bar and climbing

David L. Cooper wrote:
> 
> Can airplanes lend info to cars?
> 
> scott miller wrote:
> 
> > I also fly KC-135s full-time for the Air Force Reserves, and
> > hydroplaning is a big deal for us.  We're taught dynamic hydroplaning
> > begins at approximately the sq root of tire press times nine, and water
> > depth exceeding tread depth.  My father learned the same when he started
> > flying.  We're both mechanical engineers and car buffs, and we know it's
> > not exact, but it's a pretty good wag to know when you're approching
> > danger.  Our tires and most aircraft tires I've seen have just a few
> > straight grooves, I've not noticed a rush to aquatreads to improve a
> > very significant danger in the aviation world, so I assume tread design
> > isn't a major factor in hydroplaning speed.  Killing our lift by raising
> > speedbrakes on landing helps add pressure to the rubber/pavement/water.
> > I'm sure my car develops some front end lift at hydroplaning speeds, how
> > much I don't know.  I do know I have a lot less options when my car
> > hydroplanes than my airplane.
> >
> > I could go on for a while about this and other forms of hydroplaning, if
> > you're really interested in more, but I have a new hobby that's
> > demanding my attention.
> >
> > Scott Miller
> > Quattro owner for five days now
> > '90 200q wagon
> >
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