westin@[EMAIL PROTECTED]
shaped the electrons to say:
>I recall an explanation of the 757 some time ago in this group; I think
>it went something like the following.
Remember that the 757 and 767 were always launched as a 'family'.
Same cockpit, same controls, etc. They were meant as a high-low mix
for airlines. The 757 would replace the 727, and the 767 would
replace the 707 and fill the gap between the 757 and 747 - at least
the lower end of the gap. It was sized under the DC-10 & L-1011 which
had the high end of that gap at the time.
Eventually, of course, Boeing launched the 777 which overlapped the
767-400 a bit, and all the way to replacing the 747-100/200.
>1. Boeing proposes a 727 replacement: take the 727, replace the wing,
> take engines off the back, put nice new engines on the wing, and
> plug the center hole. Insert fancy new electronic cockpit for fuel
> efficiency and to reduce required flight crew from 3 to 2.
That was the original intend of the 757 - to replace the 727.
In the early 777 days there was even a proposal that stacked a bit of
757 fuselage on top of the 767 to create a peanut looking thing as a
double decker. Looked really stupid, frankly.
>I suspect that the '57 could be stretched quite a bit, but that the
>market would rather have something wider (i.e. two aisles) for
>capacity this size and larger. And this capacity and smaller tends to
>be used for short hauls, so the 737 fills the bill. At any rate, no
>one is beating down Boeing's door to buy 757's.
Since the 757 launched the 737 Next Generation launched. The
737-800/900, especially, overlap the 757's original market. And if
Boeing does go ahead with the 737-900X (and it looks like they will)
the overlap will be even worse.
>My impression was that the 787 was a notch larger; more a 767
>replacement. And replacing a model after over two decades hardly seems
>premature :).
The 787-3 could be seen as taking away market from 757 routes that are
growing, but yeah, the 787-8/9 are mainly replacements for the 767.
Unless Boeing lands a tanker contract, the 767 will be the next one to
get the axe. (Well, the 717 has already recieved the axe - the line
is supposed to be closed when existing orders are filled, but the door
isn't barred yet - Boeing has said they'll keep the line open if they
received significant new orders.)
It looks like the future for Boing will be 737NG, 787, 777, and 747 -
low to high. Speculation is that the next 'all new' aircraft from
Boeing, post 787, will be a 737 replacement. While te 737NG is a nice
aircraft, the basic design is getting old, and the A320 series has
enjoyed reasonable success in taking market from the 737 with the
wider fuselage and more modern systems. Between the 787 and 737
replacement the 747 Advanced will probably launch - another stretch,
new (787 derived) engines, more composites, etc. To extend the line
closer to the A380 and extend the life of the product again.
-MZ
--
<URL:mailto:megazoneatmegazone.org> Gweep, Discordian, Author, Engineer,
me.
"A little nonsense now and then, is relished by the wisest men"
508-755-4098
<URL:http://www.megazone.org/>
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