Hans, Yes i think the slat will work with any practical airfoil. It is attached to what
looks like cub aileron hangers that bolt to the spar. A helio has a wing that is not
that different from ribblet or tailorcraft. Even most of the big jets. It just keeps the
air laminaled to the wing at lower speeds. The spoilers work well with the slot or
slat because you don't have to change attitude to desend. The angle of attack is
where you get the slow speed. My self I am going to link the spoilers with my
ailerons. They are small because of the big flaps. They will deploy only at the very
last of the stroke on aileron movment. Only when you need the boost, slow speed
in the wind. Wayne
I don't see where Mackey is getting the stall speeds they advertise or, at least, talk about, except by dropping out of the sky (his landing technique).
Are Slats really better than Vortex Generators?
Low rider: There is an excellent article in the new Kitplanes mag on the LSA Patrol FWIW.
BTW here is an interesting thread hat I found that could add some color (or Colour depending on your english ) to the discussion (link)
Pls, don´t shoot the messenger
Thinking out-loud, why not put a jack screw and change the angle of incidence of the entire wing on slatted airplanes? This was you can change the AoA of the wing while maintaining visibility haha!!
Those who have not flown a (Mackey) slat, and those who have not found the edges of it's envelope seem to disbelieve pilots who have experienced it.
It is very fun to fly!
....something like this that can change the incidence of the slatted wing for landing and takeoff is truly the next "..rabbit pulled out of the hat..". for short-field performance.
...
I must agree the slat does a fantastic job on the low_end! VGs are NO comparison!
Question.. the tail (on our build) has stopped flying if power goes away when behind the power curve.. this drops the nose a LOT.
not real desirable if no room to dive and recover. Do others remain in a 'parachute mode' if power goes away?
Perhaps if you built a high aspect ratio (longer) stabilizer and elevator for your Cub you would not loose the control?
Frank, all the Mackey slatted airplanes that I have flown will lower the nose if power is reduced.
A large surface area and undercambered stabilizer airfoil section would certainly make some difference and assist keeping the nose up with less propwash available to boost "regular" surfaces. I believe the "double-ender" is using this scheme.
I got it worked out in my head, quite simple... if anyone wants description to try to make it.... could even make it a bolt on affair to test with(no wing mod?) on a real cub etc....