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380 Engine.Is This A Fuel Dump Or Another Test  
User currently offlineRelic From United Kingdom, joined Apr 2005, 114 posts, RR: 0
Posted (7 years 4 months 1 week 23 hours ago) and read 3949 times:

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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

11 replies: All unread, jump to last
 
User currently offlineKeta From Germany, joined Mar 2005, 448 posts, RR: 0
Reply 1, posted (7 years 4 months 1 week 22 hours ago) and read 3900 times:

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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Where there's a will, there's a way
User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 2, posted (7 years 4 months 1 week 18 hours ago) and read 3818 times:

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.


"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently onlineStarlionblue From Greenland, joined Feb 2004, 17030 posts, RR: 67
Reply 3, posted (7 years 4 months 1 week 16 hours ago) and read 3746 times:

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."
User currently offlineKELPkid From United States of America, joined Nov 2005, 6372 posts, RR: 3
Reply 4, posted (7 years 4 months 1 week 16 hours ago) and read 3738 times:

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...



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 5, posted (7 years 4 months 1 week 9 hours ago) and read 3631 times:

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



Think of the brighter side!
User currently offlineArniepie From Belgium, joined Aug 2005, 1265 posts, RR: 1
Reply 6, posted (7 years 4 months 1 week 7 hours ago) and read 3582 times:

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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User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 7, posted (7 years 4 months 1 week 6 hours ago) and read 3561 times:

I think the Blue smoke impression is related to the Sky in the Background.It seems aft of the #4 Exhaust.
regds
MEL



Think of the brighter side!
User currently offlineRelic From United Kingdom, joined Apr 2005, 114 posts, RR: 0
Reply 8, posted (7 years 4 months 6 days 19 hours ago) and read 3379 times:

Thanks everyone,
Well thats got me thinking.I didnt even know about "Vortex generators".
Thanks for youre comments
Andy


User currently offlineKELPkid From United States of America, joined Nov 2005, 6372 posts, RR: 3
Reply 9, posted (7 years 4 months 6 days 18 hours ago) and read 3338 times:

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



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently onlineStarlionblue From Greenland, joined Feb 2004, 17030 posts, RR: 67
Reply 10, posted (7 years 4 months 6 days 13 hours ago) and read 3272 times:

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."
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 11, posted (7 years 4 months 6 days 9 hours ago) and read 3231 times:

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



Think of the brighter side!
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