Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Boeing 757 Fuselage Cross-section  
User currently offlineJetTrader From United Kingdom, joined Oct 2001, 586 posts, RR: 11
Posted (12 years 1 week 3 days 12 hours ago) and read 6446 times:


I uploaded a set of 757-200 pics from SFO last year which all show the aircraft at the 01R hold in full profile. What struck me was the difference in the fuselage cross-section forward and aft of the wing. I've not noticed this on any other commercial airliner (ok...we'll exclude those with obviously different shaped fuselages) and wondered why the 757 was built this way.

You can see the difference in these shots...

View Large View Medium
Click here for bigger photo!

Photo © Dean Barnes



View Large View Medium
Click here for bigger photo!

Photo © Dean Barnes



Any info gratefully received.

Regards,
Dean Barnes



Life's dangerous. Get a f**king helmet!
11 replies: All unread, jump to last
 
User currently offlineDL_Mech From United States of America, joined Feb 2000, 1968 posts, RR: 9
Reply 1, posted (12 years 1 week 3 days 11 hours ago) and read 6420 times:

The 727 also has a larger cross section for the rear hold.


This plane is built to withstand anything... except a bad pilot.
User currently offlineOxygen From Hong Kong, joined Sep 1999, 674 posts, RR: 1
Reply 2, posted (12 years 1 week 3 days 7 hours ago) and read 6352 times:

Oh yeah......... I haven't noticed this before!

So can anyone answer the reason for doing so ?


User currently offlineDuncan From United States of America, joined Apr 2002, 131 posts, RR: 0
Reply 3, posted (12 years 1 week 3 days 5 hours ago) and read 6300 times:

The cross section immediately forward and aft of the wing is exactly the same on the 757. The constant cross section extends from Station 440 (the 41/43 section join) to approx station 1480 (just aft of the aft cargo door). What you may be noticing is the difference between wing-to-body (WTB) fairings forward and aft of the wings. The WTB fairings are composite fairings attached to metallic secondary structure, external to the fuselage and doesn't have any mpact on the fuselage cross section.

DD


User currently offlineSlawko From Canada, joined May 1999, 3799 posts, RR: 9
Reply 4, posted (12 years 1 week 3 days 4 hours ago) and read 6283 times:

and just to add to that, the 707, 727 and 737 all have the same cross seection..


"Clive Beddoe says he favours competition, but his actions do not support that idea." Robert Milton - CEO Air Canada
User currently offlineTimz From United States of America, joined Sep 1999, 6873 posts, RR: 7
Reply 5, posted (12 years 1 week 3 days 2 hours ago) and read 6230 times:

He meant: 707-727-737-757 have the same fuselage width, not the same cross-section. The depth differs.

User currently offlineJetTrader From United Kingdom, joined Oct 2001, 586 posts, RR: 11
Reply 6, posted (12 years 1 week 2 days 15 hours ago) and read 6143 times:


Thanks for that info Duncan.

Ok...maybe cross-section was the wrong term. It is the depth that I see as distinctly different.

Granted the wing-to-body fairings fore and aft of the wing are different...but if you take the edge of the window and resize until it is level with the rear fuselage...there is a very obvious difference in the forward fuselage depth.

Although I see it mentioned that other Boeing aircraft share this feature I don't recall seeing such an obvious difference.

Any more ideas gentlemen...?

Regards,
Dean



Life's dangerous. Get a f**king helmet!
User currently offlineTimz From United States of America, joined Sep 1999, 6873 posts, RR: 7
Reply 7, posted (12 years 1 week 2 days 6 hours ago) and read 6056 times:

Looking at Delta I see what you mean-- the top of the bare-metal seems to run right at floor level, but the apparent depth of bare metal is greater aft of the wing than forward. But I assume it's some perspective effect-- can't believe it's really deeper aft.

User currently offlineVirginFlyer From New Zealand, joined Sep 2000, 4575 posts, RR: 41
Reply 8, posted (12 years 1 week 1 day 12 hours ago) and read 5977 times:

Timz - are you sure of that? I am certain that the 757 has the same fuselage cross section as all the other mentioned Boeing narrowbodies (though if you give me some evidence to the contrary, then I guess I will be proven wrong, won't I?).

V/F



"So powerful is the light of unity that it can illuminate the whole earth." - Bahá'u'lláh
User currently offlineDash 80 From United States of America, joined Nov 2001, 309 posts, RR: 2
Reply 9, posted (12 years 1 week 1 day 12 hours ago) and read 5967 times:

Timz is right, same width, different cross-section. The 75 has a deeper belly cargo hold than the 70, 72, and 73.


...where the rubber hits the runway...
User currently offlineTimz From United States of America, joined Sep 1999, 6873 posts, RR: 7
Reply 10, posted (12 years 1 week 20 hours ago) and read 5911 times:

Truth to tell, I thought the 707-727-737-757 all had different depths below the cabin floor. Same above, of course.

User currently offlineTimz From United States of America, joined Sep 1999, 6873 posts, RR: 7
Reply 11, posted (12 years 1 week 5 hours ago) and read 5846 times:

...where the 3-views show a 13 ft 2 inch fuselage depth for the 727, 737-300 and 757,and 14 ft 2.5 inches for the 707. I sure thought the 737 cargo hold was not as deep as the others, but...

Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Planes W/ A 4-meter Fuselage Cross Section? posted Mon Apr 4 2005 07:15:44 by Lehpron
Boeing 787 226" Cross Section. posted Sat Mar 5 2005 22:58:47 by 747400sp
Last 757 Fuselage Off The Line At Boeing Wichita posted Tue Aug 10 2004 19:37:07 by CitationJet
India & The Boeing 757 posted Thu Sep 14 2006 20:19:46 by Kiramakora
A350 Cross Section Question posted Mon Sep 11 2006 21:16:13 by RIHNOSAUR
Boeing 757 At SJC Vid & Question... posted Wed Aug 30 2006 07:17:52 by SJC-Alien
Girjet Boeing 757 Flying For Spanair? posted Wed Jul 26 2006 17:12:19 by Airevents
Boeing 757-400? posted Mon Jun 5 2006 21:45:32 by ContinentalGuy
Harmony Boeing 757 Cabin Plan posted Tue Apr 25 2006 00:57:06 by QB737
Ariana Afghan Airlines Boeing 757 posted Tue Feb 21 2006 11:37:54 by Paulcaz
Boeing 787 226" Cross Section. posted Sat Mar 5 2005 22:58:47 by 747400sp
Last 757 Fuselage Off The Line At Boeing Wichita posted Tue Aug 10 2004 19:37:07 by CitationJet
Boeing 757: 30 Years Aloft. posted Sat Feb 18 2012 09:28:17 by American 767
Boeing 757 Plane Inspections To Be Ordered By FAA posted Fri Jan 7 2011 12:21:42 by KarlB737
WestJet Leases Boeing 757-200 posted Tue Dec 21 2010 09:34:15 by Access-Air
AA Boeing 757 Powerport Issues posted Sat Nov 27 2010 18:01:05 by yvphx
Ex-easyJet Boeing 757-200s. Re-paint Schedules? posted Tue Sep 28 2010 01:19:21 by Jana
Jazz To Operate Boeing 757-200s posted Mon Apr 5 2010 06:08:46 by briboy
Boeing's 757 Turns 28, First Flight (Video) posted Fri Feb 19 2010 21:10:28 by platinumfoota