Zhaadum

Check this out!

http://www.dfrc.nasa.gov/Gallery/Mov...EM-0098-01.mov

If you fly one don't look behind you!

Z.

Gear in transit

GEEZ! I've flown the twin catastropie many times and never noticed that!!
Thats pretty bad....
Wonder what they actually did to induce the flutter, it didn't look like much!

hogespa28

http://www.dfrc.nasa.gov/Gallery/Mov...M-0098-01.html

Peter Fanelli

Yep, need to be very aware of any strange vibrations that start to appear in your aircraft.
Used to fly a 402 and the clue to its flutter problem was a vibrating panel.

sms777

Many years ago i used fly a Queenair on regular charters. Once i was on decend through 6000 in to Darwin when suddenly i felt this severe vibration coming through the control column that even prompted a comment from the punter sitting next to me" I did not know this aircraft was fitted with a stick shaker!" It continued until we landed.
Upon investigation the LAME found that it was caused by a worn bush in the elevator trim tab.
I think it has prompted an AD being issued for all Beechcraft at the time.

Cap'n Arrr

Many hours in a PA30, never had that happen. Wonder how they induced it and how it is stopped (if it can be)

Superbad

YIKES!!!!!!

Use to get the vibration through the floor in the 402B, could never figure it out....

Jabawocky

Wally

Its not the frequency that has me bothered, its the amplitude

But it did have two engines

Twin Commanche!!!

J

27/09

I saw this footage quite some time ago.

I think it was NASA or a similar agency used the PA 30 for flutter testing. This flutter was deliberately induced, I think the aircraft was taken to or just above Vne.

The PA 30 is a very strong airframe, this film is testament to how strong it is.

I remember hearing a story told of a pilot speaking at a Bonanza owners meeting telling of his escapades of cloud seeding experiments and airborne thunderstorm studies. When asked what model Bonanza he used he exclaimed that he never would never do it in a Bonanza, he did it in a PA 30.

Bill Lear

I felt a strange vibration when I picked up the captains bag from the hold not so long ago. Gets lonely on the road!

404 Titan

Yes I have seen this video before as well. It is indeed a test flight by NASA of a PA30 well beyond Vne to demonstrate flight control flutter. The video I saw was much longer and showed the entire aircraft. While I would suggest not trying to duplicate the said flight, it is a testament to the strength of the PA30 which I have about 300 hours in and fond memories of.

Airgus

http://www.youtube.com/watch?v=kQI3A...eature=related
(a DG glider)
http://www.youtube.com/watch?v=ca4Pg...eature=related
(test)

Cheers

AirGus

powerstall

wouldn't want that to happen...