Air_Chick_757
Topic Author
Posts: 175
Joined: Wed May 19, 1999 2:23 am

Building An Aircraft

Fri Oct 08, 1999 8:48 am

I was wondering, what section of the airplane is built first? I mean, maybe they build the airplane parts at the same time and put them together... just a thought...   How long it takes to build an aircraft? And I mean Boeing aircrafts, from 707 to 777...
Just another dumb question from a newbie  
 
B777
Posts: 378
Joined: Fri Sep 17, 1999 9:52 am

RE: Building An Aircraft

Fri Oct 08, 1999 8:56 am

OK, this is what I know of the assembly process. Here it goes...

First, the basic framework of the fuselage is built. Then it is put into a recolving scaldfolding and weld the metal skin onto the frame. Afterwords, they attach parts like wings and tail onto the fuselage (these parts were assembled around the time that the body is assembled. Then they crawl into the fuselage and attach wiring and interior panels and other stuff that you would find inside the fuselage. Then, they put on the landing gears and engines. By this time, the plane is pretty much complete. This is a pretty general description though. About the time it takes for assembly, its about a month or so for a 777. Hope this helps.

James
 
jim
Posts: 448
Joined: Thu Jul 29, 1999 8:12 am

Building An A/C :Air_Chick_757

Sat Oct 09, 1999 3:21 am

Air_Chick_757,

Please allow me to expand on the other answer you recieved a little, as far as it regards transport category aircraft:

The fuselage, wings, plyons, and stabizilers are all assembled separately in different parts of the world.

The frames and stringers for the fuselage are held in 'jigs' and fastened together, and the the outer skin is RIVETED on, not welded. There may be some high-strength steel fastners inserted (called HiLoks) occasionally, but the vast majority of the fastners are alluminum alloy. The fuselage is actually made in sections of between 10 and 40 ft long called 'plugs'. These plugs are shipped to the assembly factory (for Boeing, in either Everett or Redmond (?)).

The wings and stabilizers are assembled in much the same fashion. The framework of spars and ribs is assembled first, then skinned, much like the fuselage.

The plugs, wings, and other major structures arrive at the factory with wiring and pumbing for hydraulics already installed. The final assembly consists of lining up the plugs, wing assembly, and then the stabilizers, and attaching the parts. Then the pylons and landing gear are installed, and the interior is finished off.

I am going to Boeing in Seattle on the 24th to begin a seven week 767-400 school. It will include several trips to the factory and flight line. I'll be glad to post more about this entire process as I get to see it first hand!

-jim

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