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Dave wrote:
: OK, after a lot of research, we are looking at installing AMR&D's : Vortex Generators on our Warrior.. : Anybody out there with expirence with these? I'm only familiar with them on 160/180 hp hershey-winged cherokees. In those planes, I can attest to the following (having done before/after) - At medium load (full fuel, 2 people), full flaps slow-flight power-on stall at 60 mph IAS without. WITH the VGs, it's 60mph *flaps up*, and you can hang it on the prop at 45-50mph. - Significantly reduced sink rate at approach airspeeds. You really do have to re-learn how to land it. - Slightly increased climb rate... maybe 100 fpm... less sink = more climb. - Negligible noticable impact on top and cruise speed. - Gotta watch out on reduced control effectiveness at the lower airspeeds they allow you to fly at. In particular, deeper stalls (makes wing-drop more likely), and crosswind landings. STOL mods like that are almost a liability in strong crosswinds. That said, I've landed my 180 with them at 25G35 cross. Bottom line: They work great. Just gotta remember not to step on them when you get in the plane... especially passengers. -Cory -- ************************************************** *********************** * Cory Papenfuss * * Electrical Engineering candidate Ph.D. graduate student * * Virginia Polytechnic Institute and State University * ************************************************** *********************** |
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