Video...Short field/OBS takeoff with Art's VG.s and gap seals.

On Sun, 27 Apr 2008 23:56:25 -0300, Dave wrote
in :


The process is a rolling start, inside tank selected, flaps up,
throttle friction high, using the full width of the runway, full power
at 45 deg to rny heading. You will get a quick look at the pulsar
lights on the turn. Flaps are popped down (25 deg) at 40 Knts
indicated, count "1 thousand, 2 thousand ", and the yoke is pulled
back all the way. (note the stabilator deflection at rotation)

The runway marker under the plane at rotation is the 500 ft marker,
Cory is at the 600 ft point with the camera, and you can see we have
at least 50 ft obs clearance height at the 600 ft mark.

I was alone (160lbs), 70 lbs in baggage compartment, tanks a little
less than 1/2, OAT 13C, wind reported 2 knts at 110 on rny heading of
090 (essentially wind calm)

Plane - CG-DQT 1976 Piper Warrior, PA-28-151

Here is the link! http://www.youtube.com/watch?v=1Od9s_VEXS8


Very impressive. Normal takeoff distance over a 50' obstacle is
~1,600' or so.

Can you demonstrate a similar landing over a 50' obstacle?

Hi Larry,

The best I have done is getting it stopped in about 450feet with
acccurate speed control, dragging it in with power and planting the
mains on the end of the runway with heavy braking.

Over a 50 ft OBS, (estimated by an observer) I needed about 900 ft and
heavy braking to get stopped.

The only gain on the short field landing is a lower approach speed
(about 5 knts less at all flap speeds) and more elevator authority
during the flare. We also have the wing root fairings installed,
improving the pitch response at low speeds.

I don't think I would try to achieve the same decent angle as the
easily achieved climb angle that we can get on takeoff.

At that rate of decent, if I didn't get the required agressive
flare....JUST RIGHT... (!) it would not be a good day...

Cheers!

Dave




On Mon, 28 Apr 2008 03:44:52 GMT, Larry Dighera
wrote:

On Sun, 27 Apr 2008 23:56:25 -0300, Dave wrote
in :





Very impressive. Normal takeoff distance over a 50' obstacle is
~1,600' or so.

Can you demonstrate a similar landing over a 50' obstacle?