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fredfighter@spamcop.net wrote:
> fitzair@wi.rr.com wrote:
>
>>The Point of the Article is to understand their use.
>>
>>Peter makes these statements.
>> "Vortex generators seem like a discordant
>>element in aerodynamic design" and "violating the rule that smoothness
>>is
>>desirable above all things"
>>
>>Think, very hard about his statements. I've agreed with the first one
>>for many years.
>>Vortex Generators are a correction, of a poor airfoil use, at a given
>>angle and air pressure
>>
>
>
> ISTR hearing about someone with a Cherokee who used them to
> reduce drag on his fuselage.
>
Three kinds of air flow.
Laminar, Turbulent and Separated.
Induced drag, that from generating lift, is hard to reduce significantly.
But dragging a bunch of small wakes is all parasitic drag.
Reattaching a separated wake should, in general, reduce patasitic drag,
and make the old sled that much faster...
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Re: Vortex Generator Technicalities, By Peter Garrison
