relic
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380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 2:36 am

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Hi everyone,This was taken near Toulouse a few days ago.Is she flying on one engine,or do you think she has a problem.Cheers Andy


Hi everyone,

I was told to throw this over to you guys from the photography forum.
This pic was taken a few days ago near toulouse.Ive had a few comments about what may be happening.
Can anyone tell me please.
Cheers
Andy
 
keta
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 3:39 am

I don't know what it can be, but I think it's not a fuel dump, since the fuel dumping valve is located at the second outboard-most flap track fairing


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EMBQA
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 6:45 am

To be honest it looks like an issue with that engine. It's hard to say from the photograph how high he is.... but the gear is down and it sure looks like engine/oil smoke to me.
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Starlionblue
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 9:25 am

Vortex generator to see what the airflow is like in that location?
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
KELPkid
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 9:32 am

Quoting Starlionblue (Reply 3):
Vortex generator to see what the airflow is like in that location?

Well, possibly a smoke generator placed there to visualize a vortex  Wink (I haven't seen too many vortex generators that use smoke to do the job...they tend to just disrupt local flows). The aircraft is obviously in a landing configuration whatever they are doing with it. If you look closely, the smoke appears to be coming from the photo's leftmost flap track fairing, and not the engine itself (it's not lined up with the center of the engine). I think you're onto something here, Starlion...
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HAWK21M
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 3:47 pm

Looks more like something aft of the Outboard of #4.Not sure if its deliberate.Since the Fuel dump provision is much more Inboard of that Area.
regds
MEL
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Arniepie
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 6:28 pm

Blue smoke (as far as I can tell/guess) , can't it be a hydraulics leak since it also seems to be on the edge of the flaps??
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HAWK21M
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Thu Apr 26, 2007 7:21 pm

I think the Blue smoke impression is related to the Sky in the Background.It seems aft of the #4 Exhaust.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
relic
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Fri Apr 27, 2007 5:51 am

Thanks everyone,
Well thats got me thinking.I didnt even know about "Vortex generators".
Thanks for youre comments
Andy
 
KELPkid
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Fri Apr 27, 2007 6:51 am

Quoting Relic (Reply 8):
Well thats got me thinking.I didnt even know about "Vortex generators".

A Vortex Generator is usually a very small strip of metal designed to start the airflow spiraling around (like a miniature tornado) to give the airflow along certain parts of the wing a more energetic air flow, which in turn does things like making a control surface more effective or lower the stall speed of a wing. The 737 has several small ones on it's wing:


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If you look in the picture above (one of the cleanest 737 wings I've ever seen  Wink ), the VG's are plainly visible just behind the black line that is painted behind the slats on the wing's leading edge...they just look like little metal strips arranged in a tidy row.

A smoke generator, if placed ahead of one of these, would allow someone to see the vortex that these vortex generators create  Smile
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Starlionblue
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Fri Apr 27, 2007 12:09 pm

Quoting Starlionblue (Reply 3):
Vortex generator to see what the airflow is like in that location?

To be quite fair, I misspoke. I meant smoke generator. As mentioned above, a vortex generator is not the same thing.  Smile
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
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HAWK21M
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RE: 380 Engine.Is This A Fuel Dump Or Another Test

Fri Apr 27, 2007 3:50 pm

Quoting Starlionblue (Reply 10):
I meant smoke generator

Was this a part of normal New project tests.I've heard for Airframe but what about powerplants.

regds
MEL
I may not win often, but I damn well never lose!!! ;)

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