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KarelXWB
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Inflatable Tent For Engine Repairs

Fri Mar 04, 2016 11:41 am

Here's something you do not see on a daily basis: an inflatable tent for engine repairs.

Boeing and Airbus tend to tow their undelivered airplanes inside a hangar if they require repairs. An engine on the BA 787 jet in the photo below is however covered by an inflatable tent, suggesting repairs are done on the flight line.


G-ZBKG British Airways Boeing 787-9 Dreamliner - C/N 38623 / LN 396 by Woodys Aeroimages, on Flickr
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KarelXWB
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RE: Inflatable Tent For Engine Repairs

Fri Mar 04, 2016 11:45 am

Several close up photos of the tent itself, demonstrated on an A380:

http://imagr.eu/up/8p1P4_800x600_1433274600_igloo_grey_sky.jpg

http://imagr.eu/up/d3Ki5_airbus_mobile_hangar2.jpg

http://imagr.eu/up/heCsu_Airbus_develops_portable_inflatable_hangar_for_engine_maintenance_3_.jpg
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yeelep
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RE: Inflatable Tent For Engine Repairs

Fri Mar 04, 2016 3:39 pm

Engine change in Sitka .
 
zanl188
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RE: Inflatable Tent For Engine Repairs

Fri Mar 04, 2016 3:58 pm

How is it anchored? Airfields lacking windbreaks and places to drive a stake....
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Max Q
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RE: Inflatable Tent For Engine Repairs

Wed Mar 09, 2016 7:31 am

Looks like an A.Net dream camping trip  
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yeelep
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RE: Inflatable Tent For Engine Repairs

Wed Mar 09, 2016 5:11 pm

Quoting zanl188 (Reply 3):
How is it anchored?

Ballast pads sewn into the bottom of the shelter, just add weight. In the picture of the 737, you can see one on the right side just above the blower. The A380 pictures provide a even better view of them.
 
Flighty
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RE: Inflatable Tent For Engine Repairs

Wed Mar 09, 2016 5:58 pm

The A380 one looks lie it might be climate controlled?
 
kurtverbose
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RE: Inflatable Tent For Engine Repairs

Wed Mar 09, 2016 7:57 pm

Quoting KarelXWB (Thread starter):
An engine on the BA 787 jet in the photo below is however covered by an inflatable tent

An inflatable Trent tent.  
 
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zkojq
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RE: Inflatable Tent For Engine Repairs

Fri Mar 11, 2016 3:19 am

There was an article about these in a Airbus's FAST magazine a few months ago. Quite a clever idea, really.
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wn676
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RE: Inflatable Tent For Engine Repairs

Fri Mar 11, 2016 6:25 pm

AA recently used one in LBB for an engine swap:

http://s24.postimg.org/50mz8w48l/Capture.png
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pygmalion
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RE: Inflatable Tent For Engine Repairs

Fri Mar 11, 2016 9:13 pm

its more for climate control for application of sealants and finishes than it is to protect the mechanic. good for everyone sure but the real drive to use one is schedule.

Faster cure of sealants and paint allows them to get the airplane back in service faster.
 
yeelep
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RE: Inflatable Tent For Engine Repairs

Fri Mar 11, 2016 9:47 pm

All the shelters in this thread are for the comfort/efficiency of the mechanics during engine work/change in inclement weather.

[Edited 2016-03-11 13:49:58]
 
Apprentice
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RE: Inflatable Tent For Engine Repairs

Sat Mar 12, 2016 9:06 am

Quoting pygmalion (Reply 10):

Hi:
I had seen photos of B744-F with a Tent over Eng #3 R/R at ANC and of course it was "armed" for mech protection. No other way to perform job there.

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bourbon
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RE: Inflatable Tent For Engine Repairs

Tue Mar 15, 2016 12:49 pm

Quoting wn676 (Reply 9):

Called an "igloo".

Quoting zanl188 (Reply 3):

As said previously, they have ballast to way down the "igloos" but they have a maximum wind component.

Quoting pygmalion (Reply 10):

If we look at the picture posted by wn676, they would use heat lamps or a couple of heaters to get the engine itself at a warm enough temperature where work can be done. That engine change in LBB began during a blizzard I believe and in sub zero (32F/0C) temps tubing/piping becomes more frail and if nuts and bolts are iced over it's hard to use a wrench!
 
pygmalion
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RE: Inflatable Tent For Engine Repairs

Wed Mar 16, 2016 9:07 pm

it takes 12-16 hours to cure fire seal and as long as 24 hours in cold weather (40-50F)

Tenting and heating to 80F can bring that down to 4-6 hours. Time is money for an airline.

The engine isn't harmed by cold temps, it is -75F at altitude on every flight and the whole wing cold soaks. (see fuel icing problems on polar routes) Under the nacelles and cowls there is very little water to "ice over" a bolt.

The igloos are to speed up the work, Yes, of course for the mechanics... but the real benefit to an airline is for faster return to service.
 
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RE: Inflatable Tent For Engine Repairs

Fri Mar 18, 2016 1:14 pm

Quoting Max Q (Reply 4):
Looks like an A.Net dream camping trip 

I bet some A.Net members are making their own 'pup tents' just looking at it! 
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RE: Inflatable Tent For Engine Repairs

Sat Mar 19, 2016 12:37 am

Quoting pygmalion (Reply 14):
it takes 12-16 hours to cure fire seal and as long as 24 hours in cold weather (40-50F)

Interesting. I've been involved in well over a hundred engine changes on half a dozen or so airframes, in the 28 or so years I've been doing this. Not sure we've ever had to apply "fire seal" to anything. Sealant cure times can be an issue, but it's usually non-routine work on an engine change and times can be accelerated by local application of heat.

Quoting pygmalion (Reply 14):
but the real benefit to an airline is for faster return to service.

Because the mechanics are more comfortable.
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Dufo
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RE: Inflatable Tent For Engine Repairs

Mon Mar 21, 2016 10:09 am

I remember when our techinican was changing propeller deicing cables when it was -20C and windy outside this winter. Two broken frozen screw bits for start and couple of thawing sessions in the car got the job done properly.

For the human part of the job it's not really for comfort but bare necessity to have such equipment, expecially for large jobs as the engine change.
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