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In order to generate lift you need laminar (non-turbulent) air flow.  Fans throw off turbulent air currents, so need to be passed through some sort of egg crate structure to flatten out the eddies.  California Science Center has a display where visitors strap on wings in a wind tunnel, so might be worth checking with them on their experience.   Chuck

>> Hello everyone,
>> 
>> I am working on "Feel the Lift!" (An exhibit that allows visitors to
>> manipulate a large airfoil in front of a blower of some sort). I know it has
>> been done before and I'm hoping someone can help point me in the right
>> direction. 
>> 
>> I am looking for suggestions on what to make the airfoil out of, as well as
>> information on blowers that others have used in their versions of this
>> exhibit.
>> 
>> Any help would be greatly appreciated.
>> 
>> 
>> Kind regards,
>> 
>> 
>> Ian McKibben

Chuck Howarth, Vice President
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