I thought that was what I said in Alabama "hillbilly english," Rick Wilson. > Hi All > > There seems to be a little confusion of the theory > and practical use of > vortex generators. Here is my 2 cents worth. > > A Vortex generator is a group of small tabs on the > top or bottom of the > wing (also used on the vertical stab on some > aircraft). They are small > (short) enough to be only in the laminar flow of the > wing. The tab is set > at an angle to the airflow to introduce a rotation > (or energy) to the > airflow. This has the effect of keeping the airflow > attached to the wing at > a greater angle of attack. they do not reduce > cruise speed at all. > > On laminar flow airfoils that are greatly affected > by bugs on the leading > edge, a vortex generator will help keep the airflow > attached to the wing > even with the bug or rain disturbing the flow. > > Many aircraft are using vortex generators, and we > have them on the Cessna > 414A that I fly. The vortex generators reduce the > stall speed and Vmc > (single engine control speed) with the resulting > lower field length > requirements. According to the specs, if more than > 3 are mssing, we have to > operate the aircraft as if it was not equiped. > > Another example is the New Piper Meridan. Piper > added approx 72 vortex > gens on the wings and horiontal stab and was able > to increase the useful > load by 240 lbs and keep the same stall speed. > > Hope this didn't add to the confusion. > > Gord Sorensen > twotterdri...@hotmail.com > > _________________________________________________________________ > Add photos to your messages with MSN 8. Get 2 months > FREE*. > http://join.msn.com/?page=dept/features&pgmarket=en-ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgmarket%3den-ca > > > _______________________________________________ > see KRnet list details at http://www.krnet.org/instructions.html
===== Rick Wilson, Haleyville, Alabama KR2-0200A -99% rwdw2...@yahoo.com __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/
