Peter Garrison is one talented fellow.
He designed and built this unique one off airplane.
He also writes two fine columns for Flying Magazine
every month and is a rotary supporter.
Check out a couple of old rotary articles of his we have
on the website.
http://www.rotaryeng.net/P-Garrison-fly-art.html
http://www.rotaryeng.net/PeterGarrisonRotary2.html
I also have a movie of his landing and takeoff.

Unfortunately this one does not have a rotary.
It is a Continental turbo charged TIO-360 I think.

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Peter uploaded a landing video I took to youtube.
check it out. Please give it a five star rating.
http://www.youtube.com/watch?v=DvLV7C-zlu8

Paul Lamar

Paul,

If there were music, you wouldn't hear the satisfying little squeak as
the tires kiss the runway. That was one of my better landings.

Peter

With all your flying experience I thought you did that all the time.
It looked like it was done by a professional. I am kind of curious
about the stall. I flew a T tail Piper Tomahawk and it had a rather
pronounced fall off. I think the horizontal got in the wing wake.

Paul Lamar

Paul,

Even great Homer nods.

Haven't stalled with flaps yet; clean stall is without warning, drops a
wing
indifferently to either side. I avoid it; the angle of attack indicator is
particularly valuable in that regard.

Peter

I wonder why no warning. Is there washout in the wing?
You figure the whole wing is stalling at the same time?
Got any pictures of tufts just prior to stall?

Paul Lamar

Stall warning can take a couple of forms: buffeting, which comes from
separated root flow hitting the tail surface, or progressive loss of
lift. In this case the horizontal tail is outside the wing's separated
wake, and so no buffeting is felt. Despite its considerable taper (t/r =
0.4) and rather moderate twist (less than 3 degrees) the wing stalls
from the root outward. Credit for this happy characteristic belongs to
John Roncz, who designed the airfoils. But the angle of attack
difference between almost stalled and stalled is pretty small, and so
for all practical purposes the wing stalls all at once.  (At least the
stall doesn't begin at the tip!) Unfortunately, I don't have good tuft
pictures of the entire wing during the approach to the stall.

Peter

Ah so! I learn something everyday. Thanks Peter.


Paul Lamar


Slightly non sequitur, I recently picked up an Aiptek GVS HD camera.  It
takes 60 fps at 1280x72 resolution and 30fps at 1080p, and has 5x optical
zoom.  It's not a wonderful camera compared to the real HD video cameras
(like the big JVC units), but it fits in the palm of the hand, cost $200, is
all solid state (can take up to 32G of SD), and has great battery life.  It
could be a really nice unit for taking video of tuft tests...


Matt-