At 08:47 AM 8/18/2006, you wrote: >I am considering adding flaps to my KR2 at a later stage, and the time is >right to make provisions for them. I'm looking at something easy to >retro-fit. Now, I have seen pictures of an Australian-built KR2 which has >got what I believe is called split flaps (just the lower skin drops, >rather than the whole profile). I wonder which design would be more >efficient, aerodynamically speaking? That one, or the one described in the >plans? Also, considering this spans only the width of the stubwings, can >you really expect any significant change?
google flaps. There is a lot of info available to answer your questions. Short answer, small reduction in stalling speed, but effective as a speed brake (drag inducer). one reference included: In 1920, Orville Wright and J. M. H. Jacobs invented the split flap, which consisted of a hinged section on the trailing edge of the underside of the wing. The split flap was simple and also had the benefit of increasing drag, which helped a pilot descend toward the runway at a steeper rate than current wings would allow and thus made landing approaches easier. Larry Severson Fountain Valley, CA 92708 (714) 968-9852 [email protected]
