Question - rudder flutter ?

wrote in news:3d7e88e1-8aa9-449a-b6a9-
:

Yipes.. *The only thing I don;t like about those Zenairs is they are
very light indeed. That 6061 is beer can stuff really, but the
airplanes
have a good record, so...
You might not need the STOL performance unless you're flying out of
your
own driveway, though. they're pretty slow....

Yup, slow. Check this out. If you could have a "favorite" NTSB
accident report, then this would be my favorite:

"As the pilot approached the vicinity of the destination airport, he
noted that the winds were about 35 to 40 miles per hour (mph). In
order to land into the wind he opted to perform a landing on a ramp
area of the airport. The airplane touched down on the ramp's surface
with a forward groundspeed of about 3 mph. A side load was placed on
the left main landing gear, and the tire subsequently deflated. The
airplane veered to the left and pitched forward, resulting in damage
to the firewall. A weather reporting station in the area reported
winds at 24 mph, gusting to 28 mph."


Yeah, done this in cubs and t-carts. Good fun!
Minus the last bit of course.

There's a lot of these flying and they have been around since
something like 1985 or so. Not many NTSB reports and no fatals.

Anyway it just looks like good plain fun.


Mm, that is a god record. Usually some tit manages to kill himself doing
something incredibly stupid like opting to use some aluminum tubing he's
taken off an old deck chair or something. Or the guy you mentioned
before who left the balance weights off his airplane..


Bertie

wrote in
:

It's more common than you think. A lot of WX accidents, for instance,
wher
e
there is loss of control due to disorientation in cloud *often ended
up
in
an inflight breakup precipitated by a spiral dive or other stressful
fligh
t
condition. Next time you see an airplane scattered across several
fields, you can be relatively certain that flutter did at least some
of the damage

on the way down.

And it even happens to people like Scott Crossfield.


Yeah..

Bertie

"Bravo Two Zero" wrote in
:


"Stefan" wrote in message
...
Bravo Two Zero schrieb:

What is rudder flutter ?

This is rudder flutter. (Actually, it's aileron flutter, but the
principle is the same.)

http://www.youtube.com/watch?v=kQI3AWpTWhM

I should add that this was a test flight done by the factory test
pilot and the wings were reinforced for this test. Standard wings
would have fallen off pretty quickly, as you can see in related
videos.


Thanks Guys espec. Bertie the Bunyip.

So the next question would be, if you experience rudder flutter in
flight, what would you do ( apart from prey !!!)




Bail out if I could. The airplane will probably be shredded. I've only ever
heard of one lightplane that survived a flutter incident. having said that,
the only ones you hear of are the ones that go in.

Bertie

WingFlaps wrote in
:

On Dec 26, 7:38 pm, "Bravo Two Zero" wrote:
"Stefan" wrote in message

...

Bravo Two Zero schrieb:

What is rudder flutter ?

This is rudder flutter. (Actually, it's aileron flutter, but the
principle is the same.)

http://www.youtube.com/watch?v=kQI3AWpTWhM

I should add that this was a test flight done by the factory test
pilot and the wings were reinforced for this test. Standard wings
would have fallen off pretty quickly, as you can see in related
videos.

Thanks Guys espec. Bertie the Bunyip.

So the next question would be, if you experience rudder flutter in
flight, what would you do ( apart from prey !!!)

Reduce speed ASAP

Yes, if you get it and the airplane stays together, but you have to
remember to be as smooth as possible in the recovery. Loading up the
airplane will exacerbate the problem. It;s test pilot stuff, really.
BTW, IIRC certification requirements for GA aricraft call for a dive to
10% above redline speed (might be lower for aircraft in the over 200
knot range) without any adverse effects. A place I used to work built
brand new Cessna 305s fom surplus parts and these had to be certified
locally under the builder's name. They were

Bertietest flown in this manner. IIRC the guy who did it took them up to
about 195 mph for certification.

The thing was so draggey he had to go near vertical to get that and I
don't think it would go any faster.

On Wed, 26 Dec 2007 09:46:56 +0000 (UTC), Bertie the Bunyip
wrote:

Pick up a can of paint sometime!


This is a relatively common problem, believe it or not.

Anyone remember the Eastern Airlines fuel savings claims when they
switched from a white base coat to natural aluminum?

Paint coats can have very noticeable weight.

B A R R Y wrote in
:

On Wed, 26 Dec 2007 09:46:56 +0000 (UTC), Bertie the Bunyip
wrote:

Pick up a can of paint sometime!


This is a relatively common problem, believe it or not.

Anyone remember the Eastern Airlines fuel savings claims when they
switched from a white base coat to natural aluminum?

Paint coats can have very noticeable weight.


Yep. that stuff can be heavy. My airpalne goes into the paint shop next
wekk and the instructions the shop has are to keep it as light as possible.

No paint on a tin airplane has the added bonus of making the airfram easier
to inspect for cracks and what not. On the minus side, they do corrode a
bit more easily..


Bertie

B A R R Y writes:

Anyone remember the Eastern Airlines fuel savings claims when they
switched from a white base coat to natural aluminum?

Paint coats can have very noticeable weight.

Perhaps that's why American still has a mostly unpainted livery. Although I
don't know if the metal is actually bare or simply coated with something
protective and transparent.

Mxsmanic wrote in
:

B A R R Y writes:

Anyone remember the Eastern Airlines fuel savings claims when they
switched from a white base coat to natural aluminum?

Paint coats can have very noticeable weight.

Perhaps that's why American still has a mostly unpainted livery.
Although I don't know if the metal is actually bare or simply coated
with something protective and transparent.

Oh thanks for that,


Please don't post everything you don't know about aviation, you'l crash the
net.


Bertie