RANS S-9 Chaos loses a wing

Video of wing failure via AVweb:

http://www.youtube.com/watch?v=4a8cntPdRtk

RANS S-9 loses a wing in an airshow doing aerobatics; pilot survives
because plane is equipped with BRS and promptly deployed.

Natural to wonder whether some earlier stunt actually partially cracked the
spar.

"Jim Logajan" wrote in message
...
Video of wing failure via AVweb:

http://www.youtube.com/watch?v=4a8cntPdRtk

RANS S-9 loses a wing in an airshow doing aerobatics; pilot survives
because plane is equipped with BRS and promptly deployed.

Fantastic to see a good end to a possibly terrible situation. Now I have to
wonder why all stunt pilots do not have a BRS chute. Seems like the best
way to save your life. The extra weight would be worth it, if you need it.

Natural to wonder whether some earlier stunt actually partially cracked
the
spar.

Yep. He was doing some pretty violent snaps right before that outside loop
started.

I wonder if he had a peak recording G meter. I think I would want one if I
was doing acro.
--
Jim in NC

Jim Logajan wrote:
Video of wing failure via AVweb:

http://www.youtube.com/watch?v=4a8cntPdRtk

RANS S-9 loses a wing in an airshow doing aerobatics; pilot survives
because plane is equipped with BRS and promptly deployed.

Natural to wonder whether some earlier stunt actually partially
cracked the spar.

Here's the original video which includes footage left out of the AVweb
version:

http://www.youtube.com/watch?v=XnHuIET4P2s

In article ,
Jim Logajan wrote:

Jim Logajan wrote:
Video of wing failure via AVweb:

http://www.youtube.com/watch?v=4a8cntPdRtk

RANS S-9 loses a wing in an airshow doing aerobatics; pilot survives
because plane is equipped with BRS and promptly deployed.

Natural to wonder whether some earlier stunt actually partially
cracked the spar.

Here's the original video which includes footage left out of the AVweb
version:

http://www.youtube.com/watch?v=XnHuIET4P2s

He was lucky! If the plane had developed more rotation in roll, he might
not have been able to deploy the BRS.

I remember looking at an S-9 under construction and did not like the
wing structural load paths through the fuselage. It would be interesting
to find out just what components failed and how much abuse the structure
had endured prior to the accident.

--
Remove _'s from email address to talk to me.

Jim Logajan wrote:
Here's the original video which includes footage left out of the AVweb
version:

http://www.youtube.com/watch?v=XnHuIET4P2s

If I recall correctly, then the the RANS-9 is limited to a load factor
of +6/-4 G. Considering the kind of aero that has been displayed, I
strongly suspect that those limits had routinely been exceeded.

"John Smith" wrote

If I recall correctly, then the the RANS-9 is limited to a load factor of
+6/-4 G. Considering the kind of aero that has been displayed, I strongly
suspect that those limits had routinely been exceeded.

I was thinking the same thing.
--
Jim in NC

On 8/17/2010 7:05 PM, Morgans wrote:
"Jim wrote in message
...
Video of wing failure via AVweb:

http://www.youtube.com/watch?v=4a8cntPdRtk

RANS S-9 loses a wing in an airshow doing aerobatics; pilot survives
because plane is equipped with BRS and promptly deployed.

Fantastic to see a good end to a possibly terrible situation. Now I have to
wonder why all stunt pilots do not have a BRS chute. Seems like the best
way to save your life. The extra weight would be worth it, if you need it.

Natural to wonder whether some earlier stunt actually partially cracked
the
spar.

Yep. He was doing some pretty violent snaps right before that outside loop
started.

I wonder if he had a peak recording G meter. I think I would want one if I
was doing acro.

The push into an inverted loop ("bunt") is the prime opportunity for a
wing to fold, no doubt.

Brian W

"Jim Logajan" wrote in message
.. .
Jim Logajan wrote:
Video of wing failure via AVweb:

http://www.youtube.com/watch?v=4a8cntPdRtk
http://www.youtube.com/watch?v=XnHuIET4P2s

It looks to me like the plane nearly flopped over on the canopy after landing.
Had that happened, the outcome would have been tragically different.

Anyhow, how could someone see that and not be sold on ballistic chutes? I was
amazed at how gentle the landing seemed to be.

Vaughn

In article ,
lid says...

Anyhow, how could someone see that and not be sold on ballistic chutes? I was
amazed at how gentle the landing seemed to be.



I would prefer the plane not to break up...

Tom De Moor

Tom De Moor wrote:
In article ,
lid says...
Anyhow, how could someone see that and not be sold on ballistic chutes? I was
amazed at how gentle the landing seemed to be.



I would prefer the plane not to break up...

Tom De Moor

I can see a recovery parachute if the airplane were to be flown at or
near the edge of the envelope on a regular basis. Most people stay well
within limits. I also wonder if having one installed would tempt a pilot
to fly in a regime where he really shouldn't or isn't qualified.

Dan, U.S. Air Force, retired