Chris, not really ture.
Aircraft designs are indeed done in CAD, simulated with CFD and then scale
models as well as flight tests are used to evolve the design. Sometimes the
CFD leads to designs that don't work out..
I reckon that aircraft are actually quite staight forward and easier to
design than race cars operatring in a combo of free air, rotating tires,
open cockpits, and ground effects.
Dave, the James's used linear pots to measured suspension deflection with a
data recorder. A long process of cut and try, cut and try at the track.
Chuck
From: Chris Reinhardt <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: [F500] new body for KBS and Q-cars
Date: Fri, 9 Feb 2007 16:04:27 -0800 (PST)
Chuck, I know that they can and do design entire aircraft without using
wind tunnels, I'm sure that with the software out now, they can design and
test race car bodies.
CR
Dave Craddock <[EMAIL PROTECTED]> wrote:
Chuck ,you obviously know Ted James,he and Nancy are most acomplished
racers,I'm curious how he measured the results he got?
Dave Craddock
----- Original Message -----
From: "Chuck Voboril"
To:
Sent: Friday, February 09, 2007 5:51 PM
Subject: Re: [F500] new body for KBS and Q-cars
> Chris,
> CFD is still in its infancy. Honest.
> CFD only gives you clues about portions of a car shape.
>
> One has to go back and forth between track measurements and CFD CAD
> modeling to get it fairly right.
> and if you have the resources, between wind tunnel tests, too.
> Wind tunnel work will still probably get a company to an optimum design
> far before someone w/out one whoonly has CFD.
> New wind tunnels are still being built.
>
> As an example-Ted James, who bought the latest Stohr WF-1, has
discovered
> it makes less measured DF than his old AMAC that he had tweaked and
> tweaked upon for years.
>
>
> Chuck
>
>
>
>
>
>>From: Chris Reinhardt
>>Reply-To: [email protected]
>>To: [email protected]
>>Subject: Re: [F500] new body for KBS and Q-cars
>>Date: Fri, 9 Feb 2007 14:32:56 -0800 (PST)
>>
>> Chuck, if you have some really good fluid dynamics software, there's no
>> need for a wind tunnel, Lee does...
>>
>> CR
>>
>>Chuck Voboril wrote:
>> I might add that the dominant Stohr DSR's have never seen the inside of
>> a
>>wind tunnel either.
>>This F500 design passes the aero "eyeball" test as well as any.
>>
>>
>>Chuck Voboril
>>
>>
>>
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