[jhb_airlines] Re: Realism

  • From: "bones" <bones@xxxxxxx>
  • To: <jhb_airlines@xxxxxxxxxxxxx>
  • Date: Tue, 24 Jul 2007 11:12:55 +0100

I'll pass on the tread depth, tyre width specs. The formula was calculated
for aircraft by the Farnborough boffins and appears to be consistent across
all aircraft types. They state that the only variable that had any material
effect on aquaplaning was tyre pressure.

Bear in mind that the phenomena called aquaplaning is specific and not a
general description for loss of adhesion with the runway surface.


-----Original Message-----
From: jhb_airlines-bounce@xxxxxxxxxxxxx
[mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Dodds
Sent: 24 July 2007 10:18
To: jhb_airlines@xxxxxxxxxxxxx
Cc: pdodds@xxxxxxxxxxxxx
Subject: [jhb_airlines] Re: Realism

...and tyre width? Surface area in contact and all that?


> *From:* FrankTurley@xxxxxxx
> *To:* jhb_airlines@xxxxxxxxxxxxx
> *Date:* Tue, 24 Jul 2007 02:35:55 EDT
> In a message dated 24/07/2007 04:58:06 GMT Daylight Time,
> bones@xxxxxxx  writes:
> The  formula is 9 x SQRT(Tyre Pressure). That means for the average
> car  with
> 30psi the aquaplaning speed is 50mph. Slower than that you just
> lose a  bit
> of traction but at that speed enough of a bow wave is created ahead
> of  the
> tyre to effectively start the vehicle surfing on the water. Once
> that
> happens there's not a lot you can do except sit back and enjoy the
> ride.
> Er.....Doesn't the tread have an effect here, as its a channel to
> disperse  the water "cushion"? I understood that's why they have
> "wet" tyres.
> Frank T.
> --
> *Included Files:*
> am2file:001-HTML_Message.html

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