On Wed, Jan 26, 2011 at 3:03 PM, Ing. Marcelo Fornaso wrote: > Actually, planes with wings with aerodynamic profiles are pulled up by va= cuum > (in a way to speak), more than pushing air down. > > Regards, > > Marcelo Fornaso > That sounds like the popular "equal transit time" fallacy: http://en.wikipedia.org/wiki/Aerodynamic_lift#Other_alternative_explanation= s_for_the_generation_of_lift Regards, Mark markrages@gmail --=20 Mark Rages, Engineer Midwest Telecine LLC markrages@midwesttelecine.com --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .