What is that whining sound aboard an inflight 747?

Jon wrote in
:

On Jan 15, 10:01 am, Bertie the Bunyip wrote:
Jon wrote
innews:8ba9eedc-68f8-40e0-93ba-

om:



On Jan 14, 9:02 pm, C J Campbell
wrote:
On 2008-01-14 11:58:30 -0800, Jim Stewart
said:

Bertie the Bunyip wrote:
Mxsmanic wrote in
m:

Alan writes:

Several times for the past few years, while on a
transatlantic flight aboard a KLM 747-400, I begin to hear
what sounds like a turbine spinning up, almost like an engine
start, but higher pitch... Anyone know what it might be?
At what point in the flight? And in which seat?

Why, you going to book next to him and whine the whole way?

What's the difference between a jet engine
and Anthony?

A jet engine actually produces useful energy?
--
Waddling Eagle
World Famous Flight Instructor

In the former case, the wake produced eventually dissipates?

Small point, It;s called blast. the stuff off the wing is wake.

Yep, my bad.....Jet Blast being the other type of turbulence caused
by... the engine, too Don't wanna be too close to either type I'd
gather, unless you like living dangerously :P


Datsa right!
in flight jet blast would be the least of your worries of you were that
close. On the ground, jetblast.

Bertie

"Alan" wrote in message
...
Several times for the past few years, while on a transatlantic flight
aboard a KLM 747-400, I begin to hear what sounds like a turbine
spinning up, almost like an engine start, but higher pitch...
Anyone know what it might be?

The whining sound I usually hear is that of the oven starting up to heat the
meals. (confirmed by an economy class purser for a 747-400).

Marco

On 2008-01-15 17:25:13 -0800, Bertie the Bunyip said:


Datsa right!
in flight jet blast would be the least of your worries of you were that
close. On the ground, jetblast.

Bertie

Heh. Henri Coanda sure found that out the hard way. Still, he managed
to live, though he never flew again.
--
Waddling Eagle
World Famous Flight Instructor

C J Campbell wrote in
news:2008011615123950073-christophercampbell@hotmailcom:

On 2008-01-15 17:25:13 -0800, Bertie the Bunyip said:


Datsa right!
in flight jet blast would be the least of your worries of you were that
close. On the ground, jetblast.

Bertie

Heh. Henri Coanda sure found that out the hard way. Still, he managed
to live, though he never flew again.

Though he did design! He spent the rest of his days at Bristol, I think.
You have to wonder if he got his ideas lighting farts.

Bertie

On Jan 16, 6:12*pm, C J Campbell
wrote:
On 2008-01-15 17:25:13 -0800, Bertie the Bunyip said:



Datsa right!
*in flight jet blast would be the least of your worries of you were that
close. On the ground, jetblast.

Bertie

Heh. Henri Coanda sure found that out the hard way. Still, he managed
to live, though he never flew again.
--
Waddling Eagle
World Famous Flight Instructor

His discover of Coanda Effect led to helicopters with no tail rotors.

http://www.globalsecurity.org/milita...notar-work.gif

Wil

On Jan 15, 8:25 pm, Bertie the Bunyip wrote:
Jon wrote :

On Jan 15, 10:01 am, Bertie the Bunyip wrote:
Jon wrote
innews:8ba9eedc-68f8-40e0-93ba-





om:

On Jan 14, 9:02 pm, C J Campbell
wrote:
On 2008-01-14 11:58:30 -0800, Jim Stewart
said:

Bertie the Bunyip wrote:
Mxsmanic wrote in
m:

Alan writes:

Several times for the past few years, while on a
transatlantic flight aboard a KLM 747-400, I begin to hear
what sounds like a turbine spinning up, almost like an engine
start, but higher pitch... Anyone know what it might be?
At what point in the flight? And in which seat?

Why, you going to book next to him and whine the whole way?

What's the difference between ajetengine
and Anthony?

Ajetengine actually produces useful energy?
--
Waddling Eagle
World Famous Flight Instructor

In the former case, the wake produced eventually dissipates?

Small point, It;s calledblast. the stuff off the wing is wake.

Yep, my bad.....JetBlastbeing the other type of turbulence caused
by... the engine, too Don't wanna be too close to either type I'd
gather, unless you like living dangerously :P

Datsa right!
in flightjetblastwould be the least of your worries of you were that
close. On the ground, jetblast.

Bertie

http://media2.stupidvideos.us/video/extreme/38763.3647549653.wmv

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http://media2.stupidvideos.us/
video/extreme/38763.3647549653.wmv