N200WN
Topic Author
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The 757 Nose

Wed Apr 13, 2005 12:49 pm

It seems like the nose of the 757 is one that everyone likes and it gives the airplane a very distinct look. If I remember correctly the 757 was going to have the same nose as a 707/727 and the collision/crash of PSA Flight 182 in San Diego in 1978 led to the design changes to allow for better outward cockpit visibility.

My question is if that nose design could be applied to the 757 why was it not also applied to later 737 designs changes...especially the 73G? Aren't the 707/727/737/757 all the same fuselage cross sections? Would it have been possible?
 
Lemurs
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RE: The 757 Nose

Wed Apr 13, 2005 12:56 pm

Quoting N200WN (Thread starter):
It seems like the nose of the 757 is one that everyone likes and it gives the airplane a very distinct look. If I remember correctly the 757 was going to have the same nose as a 707/727 and the collision/crash of PSA Flight 182 in San Diego in 1978 led to the design changes to allow for better outward cockpit visibility.

This was just being discussed in Tech/Ops today in the thread I am linking below. The consensus there from people who I would trust with this answer is that it has more to do with the flight deck commonality that got imposed on the 757 later in it's design process:
Why The Forehead On Some A/c? (by AR1300 Apr 12 2005 in Tech Ops)
There are 10 kinds of people in the world; those who understand binary, and those that don't.
 
aeroweanie
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RE: The 757 Nose

Wed Apr 13, 2005 1:30 pm

> My question is if that nose design could be applied to the 757 why was it not > also applied to later 737 designs changes...especially the 73G? Aren't the
> 707/727/737/757 all the same fuselage cross sections? Would it have been
> possible?

Changing the cockpit cab on the 737 would have been very expensive. There was no need for a common type rating with the 757/767, so the same cockpit layout as the 757/767 was not needed, which is what drove the 757 cab shape.
 
Boeing7E7
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RE: The 757 Nose

Wed Apr 13, 2005 1:33 pm

Don't be surprised if it's seen again on the 737 replacement, or at least something strikingly similar.
 
dairbus
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RE: The 757 Nose

Wed Apr 13, 2005 9:44 pm

I heard a story a couple of years back that when Boeing was designing the 737NG, they wanted to give it the 757's nose since it is more aerodynamically efficient and reduces cockpit wind noise. However, WN nixed that idea because it would of meant stocking two different types of radomes which goes against their low cost philosophy.
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jblake1
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RE: The 757 Nose

Wed Apr 13, 2005 10:22 pm

What is interesting to me is how the 757 nose makes it look like the cross section is smaller then that of the 737. I know that's not the case but visually to me anyway it appears that way.
 
Bronko
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RE: The 757 Nose

Thu Apr 14, 2005 7:36 am

I would love to see a doctored image of a 737 with a 757 nose, since it looks like Boeing did consider it at one point.

Anyone know of such an image?
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September11
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RE: The 757 Nose

Thu Apr 14, 2005 7:56 am

757 nose

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satx
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RE: The 757 Nose

Thu Apr 14, 2005 8:02 am

I never really liked the noses of the 737 or the 757. The 787's original nose was really cool looking to me. Now it sounds like the final nose will be a bit more mundane than originally shown. Oh well.
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FriendlySkies
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RE: The 757 Nose

Thu Apr 14, 2005 8:09 am

SATX:

The 787 nose will look just like it was pictured according to Boeing, as annouced today. And it's going to stay that way for good, because Boeing froze the structural lines of the aircraft.
 
DfwRevolution
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RE: The 757 Nose

Thu Apr 14, 2005 8:22 am

Quoting N200WN (Thread starter):
Aren't the 707/727/737/757 all the same fuselage cross sections? Would it have been possible?

No... they have the same upper bubble, but the lower bubble of the 757 is slightly wider which makes it appear closer to a full circular cross-section. Boeing could not simply "graft" the 757 nose onto the 737NG
 
aeroweanie
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RE: The 757 Nose

Thu Apr 14, 2005 8:41 am

Also, the 757 lower lobe grows slightly as you move aft. I first heard this as an aero legend, but we laser scanned one and its there.
 
Accidentally
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RE: The 757 Nose

Thu Apr 14, 2005 9:10 am

Indianapolis, IN
 
SATL382G
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RE: The 757 Nose

Thu Apr 14, 2005 9:15 am

Quoting N200WN (Thread starter):
Aren't the 707/727/737/757 all the same fuselage cross sections?

No, even the 707 & 727/737 don't share the same fuselage cross section. The 707 fuselage is considerably deeper.

Quoting AeroWeanie (Reply 11):
Also, the 757 lower lobe grows slightly as you move aft. I first heard this as an aero legend, but we laser scanned one and its there

The 757 fuselage is 7 inches deeper aft of the wing box, a characteristic it shares with the 727 BTW.
"There’s nothing quite as exhilarating as being shot at and missed" --Winston Churchill
 
FriendlySkies
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RE: The 757 Nose

Thu Apr 14, 2005 9:18 am

I'm very happy Boeing chose not to use that design...the 757 would have been right up there with the A380 for ugliest commercial aircraft!
 
pillowtester
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RE: The 757 Nose

Thu Apr 14, 2005 10:28 am

That picture of the 757 prototype with the T-Tail and 737 nose is perplexing.

It must have been designed in the mid to late 70s, especially with those large turbofan engines.

Why is it painted in Braniff's late 50s/early 60s livery? By then it should have already been many years into the "Flying Colors" livery.

???
...said Dan jubilantly.
 
cptkrell
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RE: The 757 Nose

Thu Apr 14, 2005 10:48 am

Very NICE modelwork, Cory. Appears to be 1:144 scale?

BTW, Pillowtester, this type of modeling is classified as "Flights of Fancy" in airliner modeling contesting (the aircraft was never actually built or put into airline service) and as such, any livery from any era, even hypothetical graphics, is expected.

I personally think the 757 nose is one of the most distinctive and attractive of any jetliner "face". Maybe slightly OT, but I couldn't resist commenting. Regards...Jack
all best; jack
 
DfwRevolution
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RE: The 757 Nose

Thu Apr 14, 2005 12:34 pm

Quoting Pillowtester (Reply 15):
It must have been designed in the mid to late 70s, especially with those large turbofan engines.

Bingo... the 727-300 morphed into the 7N7 then 757 from 1975 to 1979.
 
aeroweanie
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RE: The 757 Nose

Thu Apr 14, 2005 1:05 pm

Quoting SATL382G (Reply 13):
The 757 fuselage is 7 inches deeper aft of the wing box, a characteristic it shares with the 727 BTW.

I'm not referring to that - I mean that the lower lobe ahead of the wing deepens as it goes aft. Story is that a tunnel test showed it was worth a little bit of drag, so they included it in the design. Trouble is, this makes the forward baggage bay taper in height.

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