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- Newsgroups: sci.aeronautics.airliners
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!caen!uwm.edu!linac!unixhub!ohare!news
- From: lomasm@t9.cs.man.ac.uk (Martin Lomas)
- Subject: Re: TV programme on 777
- References: <airliners.1992.2@ohare.Chicago.COM>
- Message-ID: <airliners.1992.7@ohare.Chicago.COM>
- Approved: kls@ohare.Chicago.COM
- X-Original-Message-Id: <lomasm.722115579@p4.cs.man.ac.uk>
- Sender: kls@ohare.Chicago.COM
- Date: 18 Nov 92 19:39:39 GMT
- Lines: 86
-
-
- In <airliners.1992.2@ohare.Chicago.COM> bowen@comlab.oxford.ac.uk (Jonathan Bowen) writes:
-
- >Last night (Sunday 15 Nov), Channel 4 broadcast a TV programme on the
- >production of the new Boeing 777 airplane in the Equinox series in the
- >UK. Unfortunately I only saw the last 5 minutes of the programme. Would
- >anyone who saw the whole programme like to provide a summary in this
- >forum? In particular, I would be interested to hear if any mention was
- >made of the fly-by-wire and safety aspects of the plane.
- >--
- >Jonathan Bowen, <Jonathan.Bowen@comlab.ox.ac.uk>
- >Oxford University Computing Laboratory.
-
-
- OK, here goes (and without the aid of a video recorder! :-):
-
- New Boeing 777 and its design. The program concentrated on the
- general aspects of how the whole thing is put together - ie:
- need, management, tools used, some financial. Hard technical
- details were scant.
-
- Boeing need a plane that is bigger than their 757 and 767 yet smaller
- than the 747. With latest design, the 777 will be smaller than the
- 747 yet carry nearly the same number of passengers. Pressure from
- customers and competition from Airbus and McDonnald Douglas. Large
- order from American Airlines and others prompted the design start.
- Production aircraft by 1995(?).
-
- Large mainframe cluster (IBM!) being used for all drawings (CAD) work
- with stress analysis to let engineers reduce component weight ('safely')
- where possible. A full size mockup to test whether all components will
- fit together will not be needed (as made for previous planes) due to
- computer design checks. (Component clashes checked and highlighted.)
-
- International manufacturing: Electronics from UK, rudder from Australia,
- various (large) sections from Europe, and all assembled at Boeing's now
- being built plant in America.
-
- Some design decisions shown: Use of Aluminium-Lithium alloy -- strong
- and light but cracks when drilled. However, the cracks don't propagate
- and so are safe. Reluctantly rejected due to engineers' fears of cracks
- and possible confusion over what parts must be crack free and where
- cracks are 'ok'.
-
- Safety: Issue of doors mentioned -- trade many doors against plane
- too heavy, so compromise. Doors must open even with quarter inch
- ice sealing them shut. Good demonstration showing their intended
- design works. (Big freezer, idiot in there sprays on water, big party
- next day to see the door break open.)
- Cost compromises: None made where the plane's flyability is concerned,
- possible compromises for such as crash survivabilty and other cases.
- Concentrate efforts to AVOID crashes. Anyway, bad for business
- if your plane falls out of the sky!
-
- Fly by wire briefly explained. Safety issues NOT covered. Only advantages
- of better fuel economy and smoother flight mentioned. Implied weight
- savings due to easier mechanics. Intended fly-by-wire system currently
- being tested on a 757 with dual control systems (mechanical and the FBW).
- Hundreds of real flights being performed. Some mention given to making
- the controls similar to existing planes so the pilots can be easily trained
- for the plane. Control ergonomics reviewed by test pilots to great detail
- (focus in on 'that knob doesn't click nicely when switching between
- settings -- make it click better...').
-
- Two engines only on the plane -- one adequate for flight across the
- Atlantic. Engine reliabilty relied upon. Customer engineers allowed
- to review the new engines for servicing and to make mods.
-
- Customers allowed into (some) of the Boeing meetings to discuss the
- 777's design and to suggest mods. 'Open management' strategy.
-
-
- Main thrust of the program was the huge cost and complexity of the
- task of producing a new aircraft to tight schedules. Management
- style/issues covered much more than the technical issues.
-
-
- Good documentary very much in the 'Skyscraper' style that this film
- company first produced.
-
-
- Any other critics out there?
-
-
- Martin.
-
-