In several threads, an indirect topic of software files came up; so it brings up the question: What software do the professionals (or at least serious amateurs) here use for designing aircraft? I see that Orion has posted a Rhino file, others have mentioned Solidworks... who else uses those, and what else is used? Those two are obviously 3D programs,. but I don't know what other features they provide (FEA, or?). I have friends whose companies use Catia, but that's pretty pricey per seat. On the other end of the spectrum, some friends have designed several planes using basic spreadsheets and Cadkey. What is/are your weapons of choice? Inquiring minds want to know!