Unusual engine

Matthew Speed wrote in
:

On Sun, 18 Nov 2007 15:00:26 +0100, Stefan
wrote:

I've just stumbled over this picture. Does anybody know what kind of
engine this is?
http://www.airliners.net/open.file?id=0537804&size=M

Looking at that picture it seems to me that it would much easier to
damage that engine with the blades exposed like that. Given the rate
at which turbine engines rotate wouldn't the engine be subjected to
extreme stresses if one of the blades were to be damaged?



Well, the blades go considerably slower than a turbine does!
All the same, they're pretty fast compared to a standard prop.
If a jet engine loses a fan blade it's not a good thing either. You've got
to shut down reasonably quickly. It'd be about the same for this engine, I
would think


Bertie

One thing that would make me nervous, would be flying an engine like that,
if a blade turned loose for some reason. It would bring uncontained failure
a new meaning.
--
Jim in NC

"Matthew Speed" wrote in message
...
On Sun, 18 Nov 2007 15:00:26 +0100, Stefan
wrote:

I've just stumbled over this picture. Does anybody know what kind of
engine this is?
http://www.airliners.net/open.file?id=0537804&size=M

Looking at that picture it seems to me that it would much easier to
damage that engine with the blades exposed like that. Given the rate
at which turbine engines rotate wouldn't the engine be subjected to
extreme stresses if one of the blades were to be damaged?

I was always told that the engine on a prop plane would probably get ripped
out of the mounts if a prop lost a blade so I don't think it is good on any
engine!

"Darkwing" theducksmail"AT"yahoo.com wrote in
:


"Matthew Speed" wrote in message
...
On Sun, 18 Nov 2007 15:00:26 +0100, Stefan
wrote:

I've just stumbled over this picture. Does anybody know what kind of
engine this is?
http://www.airliners.net/open.file?id=0537804&size=M

Looking at that picture it seems to me that it would much easier to
damage that engine with the blades exposed like that. Given the rate
at which turbine engines rotate wouldn't the engine be subjected to
extreme stresses if one of the blades were to be damaged?

I was always told that the engine on a prop plane would probably get
ripped out of the mounts if a prop lost a blade so I don't think it is
good on any engine!




It will. one of the guys in my EAA chapter lost a blade on his Tailwind.
The prop was an "experimental" McCauley clip tip prop IIRC. The mounts
broke completely, but the cowling, throttle cable and what not kept the
engine on board. He deadsticked back to the field. The Navy called up
asking f anyone owned the blade later that day. it had landed in
someones back yard just missing the lady of the house as she was hanginr
her laundry!
It's happened many times over the years, in fact. There was one in
england where the engine on a Navajo shed a blade, the engine came off,
and the engine went over the top of the fuselage and took out the second
engine. the guy succesfully deadsticked the airplane into a field..



Bertie


Bertie

"Bertie the Bunyip" wrote in message
.. .
"Darkwing" theducksmail"AT"yahoo.com wrote in
:


"Matthew Speed" wrote in message
...
On Sun, 18 Nov 2007 15:00:26 +0100, Stefan
wrote:

I've just stumbled over this picture. Does anybody know what kind of
engine this is?
http://www.airliners.net/open.file?id=0537804&size=M

Looking at that picture it seems to me that it would much easier to
damage that engine with the blades exposed like that. Given the rate
at which turbine engines rotate wouldn't the engine be subjected to
extreme stresses if one of the blades were to be damaged?

I was always told that the engine on a prop plane would probably get
ripped out of the mounts if a prop lost a blade so I don't think it is
good on any engine!




It will. one of the guys in my EAA chapter lost a blade on his Tailwind.
The prop was an "experimental" McCauley clip tip prop IIRC. The mounts
broke completely, but the cowling, throttle cable and what not kept the
engine on board. He deadsticked back to the field. The Navy called up
asking f anyone owned the blade later that day. it had landed in
someones back yard just missing the lady of the house as she was hanginr
her laundry!
It's happened many times over the years, in fact. There was one in
england where the engine on a Navajo shed a blade, the engine came off,
and the engine went over the top of the fuselage and took out the second
engine. the guy succesfully deadsticked the airplane into a field..



Bertie




I was told that if the engine came out that you would probably be so far out
of CG you would crash tail first. So that surprises me that the Navajo made
it down under control.

"Darkwing" theducksmail"AT"yahoo.com wrote in
:


"Bertie the Bunyip" wrote in message
.. .
"Darkwing" theducksmail"AT"yahoo.com wrote in
:


"Matthew Speed" wrote in message
...
On Sun, 18 Nov 2007 15:00:26 +0100, Stefan
wrote:

I've just stumbled over this picture. Does anybody know what kind
of engine this is?
http://www.airliners.net/open.file?id=0537804&size=M

Looking at that picture it seems to me that it would much easier to
damage that engine with the blades exposed like that. Given the
rate at which turbine engines rotate wouldn't the engine be
subjected to extreme stresses if one of the blades were to be
damaged?

I was always told that the engine on a prop plane would probably get
ripped out of the mounts if a prop lost a blade so I don't think it
is good on any engine!




It will. one of the guys in my EAA chapter lost a blade on his
Tailwind. The prop was an "experimental" McCauley clip tip prop IIRC.
The mounts broke completely, but the cowling, throttle cable and what
not kept the engine on board. He deadsticked back to the field. The
Navy called up asking f anyone owned the blade later that day. it had
landed in someones back yard just missing the lady of the house as
she was hanginr her laundry!
It's happened many times over the years, in fact. There was one in
england where the engine on a Navajo shed a blade, the engine came
off, and the engine went over the top of the fuselage and took out
the second engine. the guy succesfully deadsticked the airplane into
a field..



Bertie




I was told that if the engine came out that you would probably be so
far out of CG you would crash tail first. So that surprises me that
the Navajo made it down under control.



Well, only one of them came off. the other just quit.
You're right, though .On a single you would have little chance. There
was a Stearman that the engine came off of and they did make it, or so
the story went.
The Navajo wasn't all that long ago. there must be some pics somewhere.


Bertie

"Darkwing" wrote

I was always told that the engine on a prop plane would probably get
ripped out of the mounts if a prop lost a blade so I don't think it is
good on any engine!

I think it's clear that it does happen, but it is also true that many
engines lose prop blades, and the engine stays with the airplane. I'll bet
many more stay, than depart.
--
Jim in NC

"Morgans" wrote in
:


"Darkwing" wrote

I was always told that the engine on a prop plane would probably get
ripped out of the mounts if a prop lost a blade so I don't think it
is good on any engine!

I think it's clear that it does happen, but it is also true that many
engines lose prop blades, and the engine stays with the airplane.
I'll bet many more stay, than depart.


Not so sure. Most I've heard of either had the engine depart completely or
be left supported by the cowling or plumbing..


Bertie

"Bertie the Bunyip" wrote

Not so sure. Most I've heard of either had the engine depart completely or
be left supported by the cowling or plumbing..

Sure, but you don't hear about the ones that turn out with no problems. If
they don't injure anyone severely, and don't tear up the equipment too
badly, they don't even end up with a report in the NTSB database, or calling
out the FAA.
--
Jim in NC

On Nov 18, 7:00 am, Stefan wrote:
I've just stumbled over this picture. Does anybody know what kind of
engine this is?http://www.airliners.net/open.file?id=0537804&size=M

This was the engine that was going to be used on the 7J7 by Boeing.
The 7J7 was a developmental program for an airplane about the size of
a 727 that would have become the 777, but was canceled. Boeing later
started the 767-X program with a much larger airplane than the 7J7
that eventually became the 777 that is currently in production.

Dean