PPVRA
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Could The 757 Have Been Shrunk?

Thu Feb 22, 2007 1:48 am

What would had been the feasibility of shrinking the B757 into the B737s size category instead of launching the B737NG?

Say Boeing "E-jets" the 757 and gives it a different (smaller) pair of wings, smaller engines, smaller landing gears, and maybe a smaller tail?

It's a 3-3 configuration, and it's aerodynamics should probably be superior to the B737 as it is a newer design (more A320/E-Jets/787 looking).

Feasible? Or is the 757 designed to be much larger from scratch?
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Dalmd88
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RE: Could The 757 Have Been Shrunk?

Thu Feb 22, 2007 6:17 am

Sounds to me like you just described a 737NG with a 757 cockpit section. I think I recall the 737/727 cockpit section is actually more aerodynamic than the 757 section. Boeing made slight trade off with the 757 so they could have a common 757/767 cockpit.
 
KELPkid
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RE: Could The 757 Have Been Shrunk?

Thu Feb 22, 2007 6:21 am

Wow, wouldn't that be a rocket  Wink

You'd probably get true intercontinental range out of the thing...like not just US East Coast to Western Europe.
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iRISH251
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RE: Could The 757 Have Been Shrunk?

Thu Feb 22, 2007 9:27 am

As the 757, when launched, was designated as the -200 series, does this imply that a series 100 had been contemplated but was not favoured by any customer airlines at the time?
 
metroliner
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RE: Could The 757 Have Been Shrunk?

Sat Feb 24, 2007 7:43 am

i believe the original 100 series airframe would just have had far too much muscle. RB211s on a plane the size of a 737-800? we'd have seen climb rates topping 15,000fpm... Big grin

toni
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Viscount724
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RE: Could The 757 Have Been Shrunk?

Sat Feb 24, 2007 9:16 am

A shrunken 757 would have been much heavier and more expensive than the 737NG with similar capacity, thus not the most economic solution. Significant shrinks (e.g. A318, 737-600, 747SP) have rarely been successful or sold in more than token numbers for specific niche markets.
 
PurdueAv2003
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RE: Could The 757 Have Been Shrunk?

Sun Feb 25, 2007 12:58 pm

Quoting PPVRA (Thread starter):
Say Boeing "E-jets" the 757 and gives it a different (smaller) pair of wings, smaller engines, smaller landing gears, and maybe a smaller tail?

Actually, you would probably have to have a LARGER tail. When you shrink the length of an aircraft, you loose part of the moment arm that the rudder acts upon. Thus, you would need a larger control surface to compensate (i.e. 747SP).
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Max Q
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RE: Could The 757 Have Been Shrunk?

Tue Feb 27, 2007 1:54 pm

The 757-100 was the original planned version of the aircraft, a -150 seater, nobody wanted it when they saw the economics of the -200.
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Starlionblue
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RE: Could The 757 Have Been Shrunk?

Wed Feb 28, 2007 1:40 am

Quoting Viscount724 (Reply 5):
Significant shrinks (e.g. A318, 737-600, 747SP) have rarely been successful or sold in more than token numbers for specific niche markets.

Yes and no. They have not sold in significant numbers but their success cannot be measured thus. The have (we assume) yielded a good rate of return on the investment of developing them.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
highflyer9790
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RE: Could The 757 Have Been Shrunk?

Wed Feb 28, 2007 9:23 am

Quoting PPVRA (Thread starter):
What would had been the feasibility of shrinking the B757 into the B737s size category instead of launching the B737NG?

the new airplane's name : 737NG  Smile

the 739 is very close to the 757 and the 757 simply wouldnt go smaller..
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OldAeroGuy
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RE: Could The 757 Have Been Shrunk?

Sat Mar 03, 2007 3:31 pm

Quoting Irish251 (Reply 3):
As the 757, when launched, was designated as the -200 series, does this imply that a series 100 had been contemplated but was not favoured by any customer airlines at the time?

Yes there was a -100 design study. The wing was too big and the landing gear was too heavy.
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