Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
How Wide Was The Boeing 7J7 Cabin?  
User currently offline747400sp From United States of America, joined Aug 2003, 3718 posts, RR: 2
Posted (7 years 11 months 2 weeks 1 day 15 hours ago) and read 12341 times:

The pro fan powered 7J7, witch Boeing was going to build as a 727 replacement, was supposed to be a wide body with a 2+2+2 lay out in coach. Here is my question is how wide was it cabin supposed to be.

10 replies: All unread, jump to last
 
User currently offlineWilliam From United States of America, joined Jun 1999, 1315 posts, RR: 0
Reply 1, posted (7 years 11 months 1 week 6 days 14 hours ago) and read 12228 times:

If i recall it was a 767 like width. Would have been a best seller, even if they would have ditch the props and installed regular fans.

User currently offline2H4 From United States of America, joined Oct 2004, 8956 posts, RR: 60
Reply 2, posted (7 years 11 months 1 week 6 days 13 hours ago) and read 12209 times:
AIRLINERS.NET CREW
DATABASE EDITOR



Here's a picture, if it helps at all:

http://i14.tinypic.com/2r27x54.jpg



2H4





Intentionally Left Blank
User currently offlineHAWK21M From India, joined Jan 2001, 31702 posts, RR: 56
Reply 3, posted (7 years 11 months 1 week 6 days ago) and read 12129 times:

Why a Pusher prop fan at that time.Was it a first technologywise.Any reason why it did not go ahead.
regds
MEL



Think of the brighter side!
User currently offlineJetjack74 From United States of America, joined Jul 2003, 7416 posts, RR: 50
Reply 4, posted (7 years 10 months 4 weeks 1 day 2 hours ago) and read 11932 times:
Support Airliners.net - become a First Class Member!

Quoting HAWK21M (Reply 3):
Why a Pusher prop fan at that time.Was it a first technologywise.Any reason why it did not go ahead.
regds

It was called an UDF or Unducted Fan Engine, It was also called the Ultra-high Bypass Fan, UHB. I was tested on a 727 and an MD80. It was a traversed prop that was supposed to cut fuel consumption by 35% and be less pollutant. It didn't take, as it was very noisy and the idea fizzled after awhile as Stage 2 and 3 noise regs were taking effect in future.
http://en.wikipedia.org/wiki/Propfan



Made from jets!
User currently offlineStitch From United States of America, joined Jul 2005, 31236 posts, RR: 85
Reply 5, posted (7 years 10 months 4 weeks 9 hours ago) and read 11886 times:
Support Airliners.net - become a First Class Member!

Quoting 747400sp (Thread starter):
The pro fan powered 7J7, witch Boeing was going to build as a 727 replacement, was supposed to be a wide body with a 2+2+2 lay out in coach. Here is my question is how wide was it cabin supposed to be.

The information on Wikipedia about the 7J7's cabin width is incorrect. The plane would have been fitted with "traditional" 3+3 narrowbody seating.


User currently offlineStrathpeffer From United Kingdom, joined Jan 2007, 79 posts, RR: 0
Reply 6, posted (7 years 10 months 2 weeks 2 days 20 hours ago) and read 11696 times:

Quoting Stitch (Reply 5):
The plane would have been fitted with "traditional" 3+3 narrowbody seating.

Initially, certainly, the plan was to have 2-2-2 seating. This was confirmed in a UK documentary called "Reach For The Skies" broadcast in the very early nineties and in the first edition of the book "Modern Commercial Aircraft" by William Green and Gordon Swanborough.

PJ



Another Technical Problem?
User currently offlineClydenairways From Ireland, joined Jan 2007, 1275 posts, RR: 0
Reply 7, posted (7 years 10 months 1 week 1 day 18 hours ago) and read 11489 times:

I remember that it was going to be a twin isle aeroplane too.. It's a pity they didn't do further development to try and eliminate the initial problems with noise etc. With up and down Fuel costs and Emissions high on the agenda again these days , it could have been the future.
At the time, i didn't like the look of it, but i think it looks cool now.

The A340 was supposed to be powered by a SuperFan too, which i think was very similar, but with the fan at the front and covered by a type of cowling.


User currently offlineScott0305 From United Kingdom, joined May 2005, 196 posts, RR: 0
Reply 8, posted (7 years 10 months 1 week 20 hours ago) and read 11423 times:

I certainly recall the talk of a wide-body but look at the artist's impression above. That's a 757 style nose if I ever saw one...with the flatter nose to fit the larger 767 flight deck...impling that the artist based this image on a standard 3+3 narrow-body.

User currently offlineStitch From United States of America, joined Jul 2005, 31236 posts, RR: 85
Reply 9, posted (7 years 10 months 1 week 13 hours ago) and read 11368 times:
Support Airliners.net - become a First Class Member!

Maybe Boeing wanted to start with a dual-aisle plane, but realized that the extra structure weight wasn't worth it (and/or the engines couldn't provide sufficient thrust throughout the entire operating range) so they went with the narrower, 3+3 cabin shown in the illustration.

User currently offlineLiedetectors From United States of America, joined Jul 2005, 360 posts, RR: 0
Reply 10, posted (7 years 10 months 1 day 9 hours ago) and read 11217 times:

Quoting Jetjack74 (Reply 4):
It was a traversed prop that was supposed to cut fuel consumption by 35% and be less pollutant. It didn't take, as it was very noisy and the idea fizzled after awhile as Stage 2 and 3 noise regs were taking effect in future.

Also the tail structure would have had to been extremely tough in the event of a blade off situation, as there would have been no fan cowl to contain it.



If it was said by us, then it must be true.
Top Of Page
Forum Index

Reply To This Topic How Wide Was The Boeing 7J7 Cabin?
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Cx Flyboy How Was The Delivery Flight? posted Thu Nov 6 2003 17:54:30 by I LOVE EWR
How Was The Old Airliners Presurrized posted Sat Feb 10 2001 18:45:34 by Headingbug
How Long Does The FAA Keep Records Of Arrivals? posted Tue Nov 7 2006 16:34:55 by Lenbrazil
How Similar Are The 707 And The 720? posted Sat Aug 5 2006 19:28:57 by Duke
Why No Douglas Competitor To The Boeing 727? posted Mon Jul 31 2006 21:51:50 by 747400sp
How Big Are The Overhead Bins On The E-Jets posted Thu Jul 6 2006 02:17:23 by Tangowhisky
Why Was The JT9D-70A So Rare On 747's posted Fri Jun 2 2006 23:45:50 by 747400sp
Was The P&W 2000 Meant To Compete With The CFM-56? posted Mon May 29 2006 19:31:12 by 747400sp
Info On The Boeing/ Nasa Hsct posted Tue May 2 2006 01:06:52 by 747400sp
What Was The Range Of The DC-8-62? posted Sun Oct 30 2005 03:01:05 by AmericanB763ER

Sponsor Message:
Printer friendly format