Larry, I mis-spoke (Notching the piston for power)

[dconyers at gmail.com (Douglas Conyers)]

I believe it was an Audi, not entirely positive here, commercial that
mentioned that it had dimpled metal underneath the car to increase
aerodynamics.  Maybe a year or two ago.

-Doug


On Mon, 13 Sep 2004 22:09:57 -0700 (PDT), Tonee Northam
<pb3vr6@yahoo.com> wrote:
> That's why alot of airlines that fly into airports have rid themselves of the EMB-120, ATR's, etc. The deicing boot is pretty much useless under extreme icing conditions, go figure, alot of those a/c are made in Brazil.
> 
> Tonee
> 
> Lars Bruchmann <pilotlars@yahoo.com> wrote:
> 
> 
> roselawn indiana.. terrible accident, the auto flight
> system kicked off, and the plane experienced an
> un-commanded aileron roll, went inverted, and dove
> into the ground. a ridge of ice had formed aft of the
> de-ice boot, and the turbulence (just what we're
> trying to accomplish in the engines..) cause the
> aileron to flip up. i am an aviation safety minor in
> college.. haha.
> --- Tonee Northam
> wrote:
> 
> > American Eagle flight crashed due to it, ATR twin
> > turbo prop, only the planes "box" showed what it's
> > instuments had reported. You'll have to remember
> > that I worked commercial airlines for 7+ years, you
> > never forget "those things".
> >
> > But back to the automobile, if nascar has been
> > modding their pistons since the eighties then they
> > must be doing something right, the last time I
> > checked my rabbit doesn't go 200+ an hour for 3-4
> > hours, well, atleast not on the same tires! hehe
> >
> > Tonee
> >
> >
> > Lars Bruchmann
> wrote:
> > you win the snickers bar!! yes, rime is opague, and
> > rippled or pitted, clear ice is, eh, well, clear!!
> > wow. we've seen both kinds in the winter, on
> > pavement. both add weight and destroy lift, increase
> > stall speed, but rime creates lots of drag too! it
> > causes some accidents, but by the time the feds get
> > there is it melted, the perfect killer!!! wow, i
> > just
> > thought up a plan to deal with the ex... hehehehe
> > --- Tonee Northam
> > wrote:
> >
> > > I have to agree with Lars, You would need smooth
> > air
> > > flow over the wings of an aircraft otherwise it
> > > would create drag and affect the lift on the
> > > aircraft. All aircraft have some kind of damage on
> > > them, the more dimples on the fuselage the harder
> > it
> > > is to control the flight.
> > >
> > > But again we're dealing with something completely
> > > different than an airplane. VW's are pennies
> > > compared to planes.
> > >
> > > Lars, Rime Ice?
> > >
> > > Tonee
> > >
> > > Lars Bruchmann
> > wrote:
> > > i have never heard of hail-damaged aircraft flying
> > > faster, except maybe for the pilots trying to get
> > > the
> > > aircraft to the ground before it is destroyed
> > > completely. modern aircraft have super-critical
> > wing
> > > and fuselage shapes, the boundry layer is
> > extremely
> > > close to the surface. dimples would not help.
> > > the dimples in a golf ball create an 'artificial
> > > boundry layer' which lets the ball fly farther.
> > > aircraft have VGs (vortex generaters), strakes and
> > > fences on wing surfaces to do the same thing.
> > > a dirty aircraft will not fly as fast, since the
> > > dirt
> > > actually raises the boundry layer, and creates
> > drag.
> > >
> > > a wet aircraft will not fly as fast either. ice is
> > > the worst, there is a type of ice that forms,
> > which
> > > is
> > > kinda dimpled, and it is really bad news. so, as
> > far
> > > as i'm concerned, dimples are bad for aircraft.
> > but
> > > they could be great for indian cars! :-)
> > > --- David Utley wrote:
> > >
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: Larry Fry [mailto:rocco16@sbcglobal.net]
> > > > Sent: Monday, September 13, 2004 9:21 PM
> > > > To: fahrvegnugen@cox.net;
> > scirocco-l@scirocco.org
> > > > Subject: Re: Re: Larry, I mis-spoke (Notching
> > the
> > > > piston for power)
> > > >
> > > > Why do we care how fast the intake air travels
> > > > "across the piston"? Once
> > > > it's inside the combustion chamber, it's a moot
> > > > point, since the old-tech
> > > > design of our engines is not of the 'high-swirl'
> > > > type anyway.
> > > > As usual, I'm a bit skeptical of stuff like
> > > > this....but, when I hear of
> > > > Roush, or Yates, or Lingenfelter dimpling their
> > > > pistons I will reverse my
> > > > postion.
> > > > :)
> > > > Larry
> > > >
> > > > Larry,
> > > > They would have, had they been doing NASCAR back
> > > > in the eighties. You
> > > > know, like when our cars were made? Besides, the
> > > > argument that our cars are
> > > > too old-tech a design to benefit seems weak as
> > > well.
> > > > Megasquirt is about as
> > > > new as it gets, and I think that all here that
> > > have
> > > > experience with it would
> > > > argue that it is VERY beneficial... Besides,
> > yours
> > > > is a 16V, yes? It is
> > > > high enough a compression to benefit...
> > > > It seems our arguments as of late seem to be
> > more
> > > > about logic and sophistry,
> > > > rather than engineering... What's up? :)
> > > >
> > > > David
> > > > > What I am suggesting is putting dimples in the
> > > > piston face, not the
> > > > perimeter... Air at speed does not do well with
> > 90
> > > > degree, much less 180
> > > > degree changes of direction. These dimples, or
> > > > pockets of air, create a
> > > > cushion of air that acts as a buffer. As the air
> > > > travels over the surface
> > > > of something, the air is slowed by the
> > difference
> > > in
> > > > speed of the two. The
> > > > pockets acts a buffers in this regard, allowing
> > > the
> > > > air to travel more
> > > > quickly across the surface.
> > > > >
> > > > > I tried to find something via Google, about
> > > > jetliners with hail damage
> > > > actually flying faster, but could turn up
> > > nothing...
> > > > You have seen the
> > > > commercial for Lexus, haven't you? I might find
> > > > more if I looked at golf
> > > > ball history, I don't know... What I do know is
> > > > that this works... :-)
> > > > >
> > > > > Cheers,
> > > > > David
> > > >
> > > >
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> 93' Corrado VR6 (Baby)
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> 00' Plymouth Voyager SE (Wife's Winter Driver)
> 94' Passat GLX VR6 (Now Jarrett's Newer B3)
> *****Rice, Marinated and Grilled Daily By German Engineered Weber Grill*****
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