EDR 374 From , joined Dec 1969, posts, RR: Posted (11 years 3 months 5 days 17 hours ago) and read 2226 times:
Last time I read in a magazine that the Boeing 757 has almost the same construction as the Boeing 707. Is the Boeing 757 really a further development of the 707? Do they have many things in common?
Oldman From United States of America, joined Sep 2006, 0 posts, RR: 0 Reply 1, posted (11 years 3 months 5 days 16 hours ago) and read 2150 times:
Well, let's see:
The 707 has a 3 man cockpit crew
The 757 has a 2 man cockpit crew
They do not have the same wings
They do not have the same Rudder
They differ in fuselage size
One has 4 engines other 2 less
One has a glass cockpit
Both have 10 tires
One was built in the late 1950's
You be the judge
N766AS From , joined Dec 1969, posts, RR: Reply 2, posted (11 years 3 months 5 days 16 hours ago) and read 2148 times:
>Do they have many things in common?
Well, as Oldman said, the tires. And the fuselage, but all narrow-body aircraft Boeing makes have the same basic fuselage as the 707/720. Notice the nose on the 757 is quite different from any other Boeing aircraft...
No, its not really a "further development" of the 707- the 757 was developed for the market the 727 occupied at the time.
Buzz From United States of America, joined Nov 1999, 697 posts, RR: 28 Reply 3, posted (11 years 3 months 5 days 16 hours ago) and read 2132 times:
Hi EDR 374, Buzz here. The 707 was built a certain way (structure/ systems) and became a standard for the industry. So it started the 707/720/727/737 series.
In the late 70's the airlines wanted a plane that wasn't a fuel hog, like the normal 707/ 720/727 series. So Boeing tried to make it thrifty with the fuel.
There isn't as much extra metal, parts are thinner, Kevlar/ Carbon Fiber is used on a lot of secondary parts. The Flush Rivets are different, made for thinner metal. The systems are simplified / automated so 2 guys can easily keep track of what took 3 or 4.
So..... the 707 series got us into jet aircraft, the 757 /767 has kept airlines in business. It's an extreme evolution, but not quite a revolution.
g'day
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