I Have a New Respect for Turbine Engines
06-19-2012, 08:59 AM
#51
My Feedback: (145)
RE: I Have a New Respect for Turbine Engines
From all apperances the engine is a P60. I would be suprised with a shaft failure with this engine, as the shaft is oversized for the engine. That being said there must have been some failure that allowed the core to move forward enough for the blades to exit ahead of the NGV ring. Tunnel, front bearing poss? who knows. What I do know it is is one more strong reason to NEVER spool up an engine to full power in the pits. That is a practice that many of us hold over from recips. Scotty
But you are right. Scotty
06-19-2012, 11:09 AM
#55
Senior Member
Join Date: Jul 2002
Location: Cincinnati,
OH
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
RE: I Have a New Respect for Turbine Engines
"What brand turbine or the size of the turbine is not important as this could happen to any and all turbines."
Not true with US MicroJet (AMT) Engines from my experience. :-)
I had one Olympus repair with a wheel that had been ground from the A'4's backing out of the tunnel, this did some damage to the root of 2 blades.
When testing the 2 blades did fail and I was @ 112k RPM, it made a helluva sound and i shut it off and all damage was absorbed by the stator and outer housing.
Yes there was a buldge on the outside but EVERYTHING was contained, no holes. Maybe the exception... but this is my experience. Not all engines are built or blow up the same.
Maybe thats why Han designed them to be more robust eh ??? Your life or your friends/family's life could be changed by your choice of engines.
Not true with US MicroJet (AMT) Engines from my experience. :-)
I had one Olympus repair with a wheel that had been ground from the A'4's backing out of the tunnel, this did some damage to the root of 2 blades.
When testing the 2 blades did fail and I was @ 112k RPM, it made a helluva sound and i shut it off and all damage was absorbed by the stator and outer housing.
Yes there was a buldge on the outside but EVERYTHING was contained, no holes. Maybe the exception... but this is my experience. Not all engines are built or blow up the same.
Maybe thats why Han designed them to be more robust eh ??? Your life or your friends/family's life could be changed by your choice of engines.
06-19-2012, 12:51 PM
#56
RE: I Have a New Respect for Turbine Engines
Shaun,
Just fly on my flights...I do not bid the trips where bad things happen...LOL.
B
Just fly on my flights...I do not bid the trips where bad things happen...LOL.
B
ORIGINAL: YellowAircraft
Boli,
When did you start writing ads for Greyhound?!? Geez that's some scary stuff, statistical unlikelihood or not....
Boli,
When did you start writing ads for Greyhound?!? Geez that's some scary stuff, statistical unlikelihood or not....
06-19-2012, 01:27 PM
#58
My Feedback: (14)
Join Date: Dec 2008
Location: Bakersfield, CA
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
RE: I Have a New Respect for Turbine Engines
Bearing service life. We use 25 hrs. Some of our complacency is letting it go longer, if it runs quiet at shut down. This is what i hear. I know i went a few hrs over on an occasion when i knew i was close, but not that close.
When bearings wear and wobble sets in, at some frequency it might set off something serious?? Conjecture here, so maybe part of our pledge to be less complacent would be to tighten up our maintainance?? Or is it just serendipidy, without explanations possible?? And totally unprovoked??
Just asking.
John
When bearings wear and wobble sets in, at some frequency it might set off something serious?? Conjecture here, so maybe part of our pledge to be less complacent would be to tighten up our maintainance?? Or is it just serendipidy, without explanations possible?? And totally unprovoked??
Just asking.
John
06-19-2012, 01:53 PM
#59
RE: I Have a New Respect for Turbine Engines
Scott,
That is a great point...however if you notice...the smart guys don't need to be told not to do it...they already move to a safe area to do engine run ups.
As my boss likes to say "Your can't legislate away stupidity".
Going to Kentucky?
Boli
That is a great point...however if you notice...the smart guys don't need to be told not to do it...they already move to a safe area to do engine run ups.
As my boss likes to say "Your can't legislate away stupidity".
Going to Kentucky?
Boli
ORIGINAL: jetpilot
Will this finally end the run ups in the pits? People STILL do this on occasion. Id rather you have a flameout then kill my ears and possibly send some metal flying my way!
Scott
Will this finally end the run ups in the pits? People STILL do this on occasion. Id rather you have a flameout then kill my ears and possibly send some metal flying my way!
Scott
06-19-2012, 02:09 PM
#61
RE: I Have a New Respect for Turbine Engines
ORIGINAL: jetpilot
Will this finally end the run ups in the pits? People STILL do this on occasion. Id rather you have a flameout then kill my ears and possibly send some metal flying my way!
Scott
Will this finally end the run ups in the pits? People STILL do this on occasion. Id rather you have a flameout then kill my ears and possibly send some metal flying my way!
Scott
06-20-2012, 06:14 AM
#64
My Feedback: (9)
Join Date: Apr 2002
Location: Belton , MO
Posts: 3,126
Likes: 0
Received 0 Likes
on
0 Posts
RE: I Have a New Respect for Turbine Engines
I lost ONE blade off of the rear fan wheel on a p-70 at 86000 rpm. It stayed inside the case, but the Imbalance it created destroyed the turbine. Bob W and Co. at Jetcat rebuilt it and I am flying it again...Thanks Guys.
06-20-2012, 08:00 AM
#65
Junior Member
Join Date: Aug 2011
Location: Orlando,
FL
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
RE: I Have a New Respect for Turbine Engines
Wow! I thought it was bad enough when I heard about a guy reaching through a spinning prop to adjust the HSN or the LSN on his nitro engine plane. He came back to the air field the next day hoping to find the piece of his finger.
