I see the reference you quoted in a review about the book. However, nowhere
does it authenticate the statements by either data or analysis. This is what
I was talking about taking things out of context..there is no prevenance
regarding the statements unless it is in the Aerodynamics of Road Vehicles
itself. And from what I could see the reviewer was looking at the text from
the vantage point of bicycles. Does that make it wrong? No, but it provides
little meat from which to make any kind of analyses or designs.
This flunks my blue tennis ball among the white one: if data or analysis is
not provided then, to me at least, it is just opinion. But, never the less
could still be true, just not enough info tomake an informed or intelligent
respones.
mayf, off planet in Pahrump
----- Original Message -----
From: "John Burk" <joyseydevil@comcast.net>
To: <land-speed@autox.team.net>
Sent: Thursday, February 03, 2005 10:15 AM
Subject: Re: Rotation Drag
> I came across what I quoted about the minor effect that rotation has on
the
> drag of an open wheel at this review of the book "Aerodynamics of road
> vehicles"
>
http://rds.yahoo.com/S=2766679/K=%22aerodynamics+of+road+vehicles/v=2/SID=e/T
>
ID=OOP5_5/l=WS1/R=2/IPC=us/SHE=0/H=0/SIG=12f77njja/EXP=1107537212/*-http%3A/
/
> www.wisil.recumbents.com/wisil/demma/aero_review.htm - When you think of
the
> tops of Joe Laws and Fast Freddies tires going through the air at nearly
the
> speed of sound I would think that might add greatly to the wheels drag -
> May-be it's the fact that the bottom of the tire has no foreward speed-
Saw at
> a place I've forgotten that the Cd for the frontal area of a tire is .58 .
|