747400sp
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Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 3:31 am

In the early 80's Boeing was looking at a airliner to compete with the A320 and MD80. It had a 757/767 type of design, but Boeing decided to build the 737 400 instead. I was wondering do any know anything about the 7-7, was it going the be as wide as the 757. Did it have six wheels or ten like the 757/767. Any body who has any information on the 7-7 please tell me thank you.
 
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HA_DC9
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 3:45 am

I know a little about the 7J7 which might or might not be be the aircraft you are referring to. The 7J7 was aimed to be a replacement for the 737 but was shelved in favor for the 737NG project. It was supposed to be a collaboration between Boeing and several Japanese manufacturers. If built, the aircraft may have benefited from a large japanese order because of the collaboration. I think it was shelved because of cost in which the NG seemed more favorable.
 
Triple Seven
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 12:05 pm

The 7-7 looks like a shortened version of the 757. It features smaller wings, smaller powerplants, and shorter legs. I used to have an old airliner book published by Bill Gunston (I think) that features the 7-7. There was an artist impression of the 7-7 in a very unique brown, gold, black livery (If I recall correctly). It was designed for a capacity of about 150. It features an overwing emergency exit on each side....very much like the A320/737s.

I'm glad that you brought this up becasue I almost forgotten about this myself.
 
747400sp
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 12:21 pm

Triple Seven


First thank you

Also could you tell me if it had six or ten wheels.
 
Triple Seven
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 12:31 pm

747400sp,

The impression did not feature the wheels but I doubt it has double boggie.
 
Matt D
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 12:37 pm

I remember reading about those designs too. However, the 7-7 and the 7J7 were two different designs. As I recall, and as noted above, the 7-7 was an early 80's Boeing concept aircraft that bore a striking resemblence to the A320. The 7J7 was more of a 717-ish design: twin rear mounted engines, T-tail, etc. I believe it was supposed to use the UDF prop/jetfan hybrid engines. The concept pictures also depicted a plane with very short narrow wings.

Speaking of that old Bill Gunston book (the one with the nose drawing of the British Caledonian DC-10, right? GAWD How I still wish I had that book), anyone remember the "MDF-100", which was supposed to be a joint venture with McDonnell Douglas and Fokker? Didn't that plane eventually emerge as the Fokker-alone F-100?

Except as I recall the original joint design, it had a T-tail, but wing mounted engines and a cool red/blue color scheme similar to that of VIASA and old, original Air Florida.
 
747400sp
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 12:42 pm

Thank You Triple Seven.
 
delta-flyer
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 1:24 pm

I seem to recall the 7-7, later 7J7, was planned to be the unducted fan powered aircraft about the size of the 737. The program was canceled when fuel prices dropped and the engine had excessive vibrations.

Pete
"In God we trust, everyone else bring data"
 
Gdabski
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 7:55 pm

Preliminary details of the 7-7 were revealed at The '81 Paris Air Show. The plans were for a twin engined 150 seat short/medium range jetliner with a larger fuselage cross section than the 737. As much commonality as possible would be sought with the 757 components, such as the flight deck, front fuselage, rear fuselage, tail unit and many of the systems. The wing and engine installation would be new, together with the undercarriage.
At that time Boeing indicated that the earliest in-service date was likely to be 1988 as the company was occupied with the 757, 767, 733 projects. Boeing was planning to optimize the design to achieve the lowest fuel burn over ranges of 500nm/925km, while the design range would be 1500nm/2776km and the design speed would be Mach 0,75 - 0,78.

Source: An Illustrated Guide to the World's Airliners by William Green Gordon Swanborough, 1982.

Gdabski

PS. The book also features the rendering with the plane in silver/gold/brown/black livery, but I don't have the possibility to scan it.
 
Boeing Nut
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RE: Information On The 7-7 Concept Airliner

Tue Aug 26, 2003 10:11 pm

I remember this concept as well. I have no clue what the reference was, but I distinctly remember that Delta was pushing for an all new design. And when I say all new, I mean Delta wanted nothing that was already on the shelf. They wanted new engines, wings, cockpits, etc. It went against all principles of commonality. At that time, the A320 almost fit the bill, but the engines weren't quite new enough!
I'm not a real aeronautical engineer, I just play one on Airliners.net.
 
Triple Seven
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RE: Information On The 7-7 Concept Airliner

Wed Aug 27, 2003 4:02 am

Speaking of that old Bill Gunston book (the one with the nose drawing of the British Caledonian DC-10, right? GAWD How I still wish I had that book), anyone remember the "MDF-100", which was supposed to be a joint venture with McDonnell Douglas and Fokker? Didn't that plane eventually emerge as the Fokker-alone F-100?

Yep the one with the BCal DC-10-30. I gave my book away to a friend many-many years ago (silly me). About the MDF-100, McDD dropped out and that emerged as the F-100
 
petertenthije
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RE: Information On The 7-7 Concept Airliner

Wed Aug 27, 2003 4:24 am

The MDF-100 was not the precursor of the F100. The MDF-100 looked more like a 737/320 cross then like the F100. The F100 is a massively revised F28. Some technology that was designed for the MDF-100 did find its way to the F100.

Not the best of pics, but it will have to do.


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