Steve, If deep stall occurred, the ailerons may not be effective, but the rudder might be. I say might be because the stock rudder may be masked by the wing at high AOA. James Postma Q2 Revmaster

Please let me elaborate on the logic for my VG design. The reason for the GU canard VG design by QAC is to reduce the tendency of the airfoil to lose lift in rain and bug contamination. The reason

Jamaes, Probably others also will point out that the ailerons on a stalled wing are ineffective... which is why tyro pilots are told to use rudder to keep the wings level when approaching a stall.

John, I might add that my initial flight tests are at 3 feet then at 10 feet. This is to establish that the flying surfaces have balanced lift and are stable. My high AOA tests are at altitude. All

Actually, it is improbable that one could stall the total wing. Most airplanes are designed to stall the inboard portion first, and have the ailerons outboard. Back 40 years ago, when I was studying

No sir, I am a died-in-the-wool lifer! How are you, my friend? Pam and the boys doing well? I'll bet the boys are big enough to carry you around by now. ~T~

Paul, Did you use my design which I published on this list? Mine works perfectly so much so that I have not even attempted to optimize them. My airplanes do not stall in any configuration and I

Good observation Jon, I believe this is the kind of thinking that will get someone killed. All of the planes I have flown control roll with the ailerons, all ailerons are on the wing, and if the wing

Hey no need to demonstate so LOW James. Peter

That is an interesting point James and I wonder if it could support an application for our ultralight class. John Tenhave what do you think ? Peter

How can one be forward CG with 2 onboard in a Q2? Maybe they mean aft. James Postma Q2 Revmaster N145EX Q200 N8427 Steilacoom, Washington (253) 584-1182 9:00 to 8:00 PDT May your header tank be

Thanks James. Peter

Larry The ponk calc looks OK as a rule of thumb and according to the math 56" diam is about right but need heaps of pitch for efficient operation at 100hp 200mph and then less than 3500rpm.will do

Larry, Second thoughts on this statement. Why didn't that happen for the Dragonfly? It has tons more wing area, and yet still has a high stall speed, as evident by the discussion on the Dragonfly

YES Larry ! Peter

David Gall, please email me off list at HawkiDoug@... . Doug "Hawkeye" Humble www.asignabove.net Omaha NE N25974

In a message dated 11/17/04 9:44:48 AM Pacific Standard Time, james@... writes: If I can get a passenger who is willing, I will do the high AOA at aft CG. James: I think Mark Geragos

Hey Mark, That's really great. I downloaded them and I will take a closer look a bit later today. I can probably put them back together in photoshop and print them on larger paper. (I'll be sure

Mark, thanks for the information and the effort. John

Hi Mark, Unless they have a reference dimension on them, they're not of much use. The same goes for photocopies of the originals. Even the originals themselves may have changed shape after all these