Flying Home Commericially Tonite...

"Robert Chambers" wrote in message
newsCxsf.4558

Compressor stalls can be nasty as pressurized combustion gasses going the
wrong way can in some instances damage the engine.

Here is a good question, for someone has actually stalled a civilian
compressor. Do you have to log compressor stalls, or do anything extra,
after stalling one?
--
Jim in NC

Jay Beckman wrote:

Am I correct in thinking that disrupting the airflow into a turbofan engine
sets up a momentarilly over-rich mixture (hence the visible flame?)

The early jets (1940s) were prone to compressor stall. Several books I have
which discuss that period state that the mixture goes rich when this happens. In
something like the Me-262, it would get rich enough for the fire to go out.
'
George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.

"Morgans" wrote

Here is a good question, for someone has actually stalled a
civilian compressor. Do you have to log compressor stalls, or
do anything extra, after stalling one?

Used to happen all the time in the old B-707s due to "sticky"
surge bleed valves between the N1 and N2 compressor sections.
No write-ups due to compressor stalls, but we might write-up
the surge bleed valve. In the JT-3D engine, it was not a matter
of not enough air, but rather too much air fed from the N1
compressor stage to the N2 stage.

Bob Moore

Wiz wrote:
A few years ago, before I started flying, I was on an American flight
out of Houston with a pretty good crosswind ripping across the runway.
I was seated near the back of the plane. A couple of seconds after
takeoff we heard a VERY loud bang, the left wing dipped momentarily,
and we continued on...

And the plane continued to climb out on one engine?

The Monk

"Flyingmonk" wrote

Wiz wrote:
A few years ago, before I started flying, I was on an American
flight out of Houston with a pretty good crosswind ripping
across the runway. I was seated near the back of the plane. A
couple of seconds after takeoff we heard a VERY loud bang, the
left wing dipped momentarily, and we continued on...

And the plane continued to climb out on one engine?

Of course...ALL jetliners are required to be able to complete the
takeoff roll after V1 and climb out with one engine inoperative.

However, I don't think that the premise in the preceding post was
valid....all of the conditions for a successful relight (if indeed
it had flamed-out) were still present without having to read a
checklist, fuel was ON, ignition was ON, and engine was TURNING.

I personally have never experienced a compressor stall that caused
an engine to flame-out.

Bob Moore
ATP B-707 B-727
PanAm (retired)

I concede that the pilot's explanation of the 20-minute delay before
explaining what happened to the passengers, that they were "reading the
manual on how to restart it" may not be valid. I know exactly zip
about jet checklists and POHs :-) Just repeating what captain said...


Bob Moore wrote:
"Flyingmonk" wrote

Wiz wrote:
A few years ago, before I started flying, I was on an American
flight out of Houston with a pretty good crosswind ripping
across the runway. I was seated near the back of the plane. A
couple of seconds after takeoff we heard a VERY loud bang, the
left wing dipped momentarily, and we continued on...

And the plane continued to climb out on one engine?

Of course...ALL jetliners are required to be able to complete the
takeoff roll after V1 and climb out with one engine inoperative.

However, I don't think that the premise in the preceding post was
valid....all of the conditions for a successful relight (if indeed
it had flamed-out) were still present without having to read a
checklist, fuel was ON, ignition was ON, and engine was TURNING.

I personally have never experienced a compressor stall that caused
an engine to flame-out.

Bob Moore
ATP B-707 B-727
PanAm (retired)

"Morgans" wrote in message
Here is a good question, for someone has actually stalled a civilian
compressor. Do you have to log compressor stalls, or do anything extra,
after stalling one?

The center engine on the B-727 was prone to compressor stalls with strong
crosswinds during the initial take-off roll. According to our manuals, the
engine was to be removed after the second event. We were usually too busy
during take-off to write it.

D.