"Kyle Boatright" wrote in
:


"Big John" wrote in message
...
On Sun, 18 Nov 2007 13:51:53 +0000 (UTC), Bertie the Bunyip
wrote:

WJRFlyBoy wrote in
:

On Sun, 18 Nov 2007 08:12:31 +0000 (UTC), Bertie the Bunyip wrote:

This is the one I mean to post Dudley. Was having some trouble
with Youtube due to a plug-in I think..
http://www.youtube.com/watch?v=Y7eYhlm9FJ8

Can you assess the problem?

What, with my browser or the accident?

The T-6 passed 90 deg (and even earlier) with his nose below the
horizon. He could have rolled back and saved it at that point, but he
continued around in the now awkward position of having to prevent
further altitude loss with excessive neg G which slowed him
considerably and further skewed the airplane's. The exit half was a
classic dish. Everybody does 'em sometimes.... Trick is to recognise
a roll that's going to produce one early enough to abandon it. This
guy didn't.

The You tube extension add-on, I have no idea, but it's made a mess
out of my youtube fun!



Bertie


Bertie

I made some comments on another post on this accident which was
before the video of the accident was posted.

I have looked at the strip probably 50 times and can't come up with
what I believe is a accurate analysis of what all happened and why.

1. Bird was in a shallow dive and picking up airspeed, above cruise,
when strip starts. This is a good entry technique.

2. Bird bottomed out and nose was raised above the horizon before
roll started. Again good technique.

3. After first 90 degrees of roll nose had dropped to at least level
or very slightly nose down.

4. After 180 degrees of roll nose was definitely below the horizon.
Not in a dive but shallow enough that continuing roll rate should
have allowed completion of roll before bird hitting ground.

5. After 270 degrees of roll bird made almost a square corner port
turn and shortly after hit the ground almost flat 90 degrees off line
of flight.

Is there any evidence that he fed in pro-roll rudder in addition to
some elevator? That would explain both the nose dropping during the
roll and the rather abrupt course change.


doubt it or he would have turned into the ground pretty quickish. just
not enough top rudder would be my guess.

Bertie