jcs17
Posts: 7376
Joined: Mon Jun 18, 2001 11:13 am

What Is The Floor Made Out Of?

Fri Feb 28, 2003 3:47 pm

What are aircraft floors made out of, in other words, whats under the carpet? When you walk on it, it feels like either a really hard plastic or rubber. Obviously, there are crossbeams running through the floor, correct?
America's chickens are coming home to rooooost!
 
737doctor
Posts: 1291
Joined: Mon Mar 19, 2001 4:52 pm

RE: What Is The Floor Made Out Of?

Fri Feb 28, 2003 5:53 pm

737 floorboards are of honeycomb composite construction which are screwed down with titanium screws into nutclips or nutplates attached to aluminum floorbeams. Nutclips are just like they sound; they have a nut built in and clip around a hole. Nutplates are similar, but more solidly attached; they are riveted to the supporting structure. Floorboards have foam tape on the underside around the edges where they contact the structure and the ones in the "wet areas" (lavs/galleys) are sealed to prevent corrosion. The carpet is attached with double-sided tape.

Pretty boring stuff.
Patrick Bateman is my hero.
 
avioniker
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RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 2:45 am

The Hexelite Company of Casa Grande AZ is one of the biggest vendors of these floor boards. You can get more info from their website.
I'm not too sure about the titanium screws, though. Aluminum and Titanium don't play very well as evidenced by the 757 Door problems ten to twelve years ago.
One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533
 
Ikarus
Posts: 3391
Joined: Mon Jan 08, 2001 10:18 pm

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 6:04 am

Usually honeycomb (Aluminium, CFRP or GFRP). As far as I know, Boeing planes have CFRP more often, whereas Airbus ones tend to have GFRPs - although that memory may be wrong and ultimately, it's up to the airlines.

(CFRP = Carbon Fibre Reinforced Polymers
GFRP = Glass Fibre Reinforced Polymers)

As 747Skipper said, the area under the lavs is usually metal (urine has ammoniac in it, which is highly corrosive for aluminium! - Does anyone know whether that lesson was learned "the hard way" (i.e. by lots of corrosion & early retirement or even serious incidents)?)

Regards

Ikarus
 
N777UA
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RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 6:35 am

What was the early problem with 757 doors?
 
737doctor
Posts: 1291
Joined: Mon Mar 19, 2001 4:52 pm

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 7:36 am

You don't have to be sure, I've screwed down enough floorboards to know for sure...  Big grin
Patrick Bateman is my hero.
 
Fokker Lover
Posts: 523
Joined: Fri May 10, 2002 10:05 am

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 8:23 am

I'll concur with 737 Doctor. Titanium screws in the floorboards, and practically everywhere else in that airplane. I'll also admit to tossing a few titanium rico tips in amongst the Philips heads, just to get a charge out of NKP-S2.
10,000 years ago we would have eaten you. Today, we drag you along and allow you to pollute the gene pool.
 
NKP S2
Posts: 1665
Joined: Mon Dec 20, 1999 3:16 am

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 11:17 am

Watch it there Fokkerlover, or I'll start installing screws with a dab of 'Lok-Tite' on the threads Smile
 
IMissPiedmont
Posts: 6200
Joined: Wed May 23, 2001 12:58 pm

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 2:04 pm

OK I'll admit it. I'm older than most of you. The floor panels I remember were all balsa wood with aluminum skins. I never saw a honeycomb floor board. Logical thoughthat a honeycomb has replaced this as we used to guess the weight of the woman that trashed the panels because of the high heels, sexy as hell but destroys the balsa/aluminum combo quickly.
The day you stop learning is the day you should die.
 
KAL_LM
Posts: 492
Joined: Fri Jun 29, 2001 8:58 am

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 2:19 pm

Plywood....

No, I'm serious, once on a unnamed cargo charter, saw a deck floor patched with plywood. It wasn't too big, maybe 1-2 sq. feet, but it was plywood. Knew it was too cause it didn't flex like the normal flooring does.

regards,
Tom
is that a light at the end of the tunnel or just a train?
 
737doctor
Posts: 1291
Joined: Mon Mar 19, 2001 4:52 pm

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 3:32 pm

Yeah, I remember the aluminum/balsa combo on some of the DC-8's I worked on "back in the day".  Big grin
Patrick Bateman is my hero.
 
Dalmd88
Posts: 2399
Joined: Fri Jul 28, 2000 3:19 am

RE: What Is The Floor Made Out Of?

Sat Mar 01, 2003 10:19 pm

Bag bin floors in the MD-80 are still aluminum/balsa. The cabin floors are honeycomb but the screws are just regular steel in our airplanes. They have a shallow countersink with points on the ends.

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