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Boeing Model Designations: the 700 series

hesham

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From USA,

Boeing-777 (ORIGINAL DESIGN) :a three engined version of B-767-200
but no buyer killed the project.

Projects to Boeing from 1970s,

Boeing 7N7 was twin jet engined medium range transport airliner,Boeing
7X7 was larger project as three turbofans engines airliner and Boeing 7S7
was a new variant of 7N7 with wider-aisle cabin and 180-seat airliner.
 

nugo

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Hi All!

Can be: Model 7X7-882/751-882---AKA Model 882
Model 7X7-962/751-962---AKA Model 962
Model 7X7-963/751-963---AKA Model 963
Maybe no, but exactly I said to my suggestion
 

Stargazer2006

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Normally, the part of the designation that follows the hyphen indicates the nth design WITHIN that particular project. Although this doesn't necessary mean there were 963 detailed design proposals in the Model 751 project (they could just be proposed configuration in the form of a sketch or a specs sheet), that's basically what it means.
 

hesham

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nugo said:
Hi All!

Can be: Model 7X7-882/751-882---AKA Model 882
Model 7X7-962/751-962---AKA Model 962
Model 7X7-963/751-963---AKA Model 963
Maybe no, but exactly I said to my suggestion

No dear Nugo,

it was just Model-751,and the other series was the number of the designs;
http://www.flightglobal.com/pdfarchive/view/1976/1976%20-%201044.html?search=7x7
 

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Does anyone know the Boeing model number for the Sonic Cruiser proposal? 7??...

A picture of it.
 

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Stargazer2006

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Thanks George. Yeah I know! It bugs me that the "commercial" designations reuse ones that were initially allocated to sometimes totally different projects! The "767" has so many different aircraft projects associated to it that it doesn't make much sense. Reversely, some almost similar projects (such as the 759-211 and the 907) have different designations! What really annoyed me the most was the use of "717" for the MD-80 series when there are still proper Model 717 aircraft in service, namely the USAF's Stratolifters and Stratotankers!
 

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hesham said:
Hi,

768 was twin engined jet airliner and for the Model-709 please see;
http://www.aerofiles.com/_boe.html

Probably just one of the many mistakes and typos that can be found at Aerofiles. I love that site and it's been precious to me on many occasions, but you have to be careful to separate the wheat from the chaff, and quite obviously this is a mistake. The B-59 proposals came under Models 484 and especially 701, but none of these are mentioned there, just this would-be "709"...
 

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Another mistake (this time on my part) is a confusion over Model 724 and the so-called "721", which apparently didn't exist (at least not as a pre-WS-110 study). I'm removing it right now.
 

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Stargazer2006 said:
Another mistake (this time on my part) is a confusion over Model 724 and the so-called "721", which apparently didn't exist (at least not as a pre-WS-110 study). I'm removing it right now.
I will keep 721-13 because Boeing had a zillion designs going on at the time under their in-house "Project Paperclip" on the WS-110 program. I seen this for myself back in the 1980s in Boeing's archives when I was researching my first B-70 book.
 

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Stargazer2006 said:
702 geosynchronous communications satellite

That isn't a Boeing model number, it was pre existing. The BSS (Boeing Space Systems) 702 spacecraft was first a Hughes HS 702, so the model designation is not part of Boeing Model Designations. Otherwise you would have to include the BSS 601 and 376 spacecraft model numbers and those don't definitively fit in.
 

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Byeman said:
Stargazer2006 said:
702 geosynchronous communications satellite

That isn't a Boeing model number, it was pre existing. The BSS (Boeing Space Systems) 702 spacecraft was first a Hughes HS 702, so the model designation is not part of Boeing Model Designations. Otherwise you would have to include the BSS 601 and 376 spacecraft model numbers and those don't definitively fit in.

Thanks for clarifying this! I will remove it from the list right away. What makes the Boeing Model numbers difficult to identify, besides the fact they have taken over other companies, is the fact that they are not always chronologically sequenced...
 

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Hi All!

Model 730---Arctic Cargo SEV(Surface Effect Vehicle), proposal
 

Stargazer2006

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701 XB-59 (MX-1712) bomber project (701-1-1, -1-2, -333) (1951)
707 BOEING 707 four-engine airliner; many variants
709 no details ; appears in Richard K. Smith archives
712 proposal for LRI competition
717 C-135 STRATOLIFTER cargo/transport derivatives of DASH 80 prototype
717 KC-135 STRATOTANKER airborne tanker derivatives of DASH 80 prototype
720 refined and shortened Model 707
721 no data, unconfirmed
724 series of various projects for WS-110 weapon system competition (724-16, etc.)
725 series of various projects for WS-110A (725-21,-39,-79,-80,-87,-91,-100,-229,-234)
727 BOEING 727 (ASTROJET…) trijet airliner series
731 SOR-182/SS-476L transport proposal
733 SST series of supersonic liner projects (= Model 2707) (1962-63) (733-290,-390,-606-12, -790)
735 swing-tail freighter aircraft
737 BOEING 737 (TWINJET…) twin-engined short-range liner series
738 swing-tail freighter aircraft, military version of Model 735
739 RC-135A/B electronic reconnaissance versions of C-135
742 variable sweep wing airliner project (742-240)
747 BOEING 747 (JUMBO JET…) long-range four-engine airliner
751 competitor of the BAe 146 developed with Aeritalia
753 no data (753-197)
754 Burnelli-type transport project
755 trijet airliner project (755-300)
757 BOEING 757 twin-engined short-/medium-range airliner series
759 large transport proposals (759-111,-182A,-222), Spanloader (-127,-165A)
767 BOEING 767 twin-engined medium-range airliner series
777 BOEING 777 wide-body long-range airliner series (1994)
787 BOEING 787 DREAMLINER
 

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Stargazer2006

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An artist's view of what seems to be the same configuration... and a 3-view of a smaller, undesignated Arctic Cargo SEV.

Source for all of these is the same as above.
 

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Maveric

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the Boeing Model 735 (from Flight)
 

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Stargazer2006

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New topic split from the general Boeing designations thread.

A set of previously unknown designations, which come from a document photocopied by fellow forum member Clioman on a visit to Boeing's archives in 1991:

Model 701 --- MX-1712 and MX-1965 bomber projects
Model 702 --- MX-1847 and MX-2145 projects
Model 712 --- LRI proposal
Model 713 --- WS-110A program (probably plain WS-110 in fact)
Model 722 --- WS-125A project
Model 724 --- WS-110A program (apparently plain WS-110 in fact)
Model 725 --- WS-110A program
Model 728 --- ROBO project
Model 750 --- CX-HLS proposal

I will create new posts for the various 700-series designators so we can add sub-versions in them.
 

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MODEL 700

Bomber/reconnaissance parasite project.
  • 700-1 ...
  • 700-2 ...
  • 700-3 ...
 

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MODEL 701

Series of bomber designs submitted to the U.S. Air Force's MX-1712 and MX-1965 programs from 1951 and culminating to the cancelled XB-59.
  • 701-1-1 ...
  • 701-1-2 ...
  • 701-203 ...
  • 701-211 ...
  • 701-218 ...
  • 701-244 ...
  • 701-245 ...
  • 701-273-0 ...
  • 701-273-1 ...
  • 701-273-2 ...
  • 701-273-3 ...
  • 701-273-4 ...
  • 701-273-5 ...
  • 701-273-6 ...
  • 701-273-7 ...
  • 701-299-1 ... Design reviewed by USAF and allocated the designation XB-59.
  • 701-333 ... Final MX-1965 (XB-59) proposal with four General Electric J73 engines.
 

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MODEL 702

Series of proposals submitted to USAF's MX-1847 and MX-2145 programs.
 

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MODEL 704

VP Class VP(HL) landplane minelayer project to U.S. Navy's OS-128 outline specification (Feb. 1952).
 

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MODEL 707 « JET STRATOLINER »

Four-engine airliner series developed from the Model 367-80 "DASH 80" prototype.
  • 707-20: Initial designation of Model 720.
  • 707-100: Generic designation of 707-1** types (1957).
  • 707-100B: Generic designation of 707-1**B types; variant with 17-18000# JT3D bypass engines, increasing climb from 2400 to 5050 fpm.
  • 707-120: First version of Boeing 707; 13,000 lbf P&W JT3C-6 turbojet engines, maximum takeoff weight of 247,000 lb. First flight in 1957; 56 built from 1957-1960.
  • 707-120B: New build or converted 707-120s with 17,000 lbf P&W JT3D-1 or 18,000 lbf JT3D-3 turbofan engines, larger vertical stabiliser from 707-420 and wing modifications derived from Boeing 720. First flight in 1960; 72 built from 1960-1969, plus 31 converted from -120s.
  • 707-138: 707-120 variant built exclusively for QANTAS. Shortened by 5 feet; same engines and takeoff weight as 707-120. First flight in 1959; 7 built in 1959.
  • 707-138B: 707-138 with the same modifications as the 707-120B. First flight in 1961, 6 built 1960-1964 plus 7 conversions from -138.
  • 707-200: Generic designation of 707-2** types; variant with 15800# JT4A engines.
  • 707-220: 707-120 optimised for “hot and high” airfield performance, equipped with 15,400 lbf P&W JT4A-3 turbojet engines. First flight in 1959; 5 built for Braniff Airlines in 1959.
  • 707-300: Generic designation of 707-3** types; intercontinental version with modified inboard planform and new swept wingtip, span increase with root plug.
  • 707-300B: Generic designation of 707-3**B types; variant with 18000# J3D bypass engines (1962).
  • 707-300B Advanced
  • 707-300C: Generic designation of 707-3**C types; tanker-transport variant (-331C: prototype; -351C: VC-137C).
  • 707-300F
  • 707-320: So-called “707-Intercontinental”, initially known internally as 707-803. 707-120 with 80-inch fuselage stretch, 12-foot extended wings with “kinked” trailing edge, extended horizontal stabiliser plus various minor aerodynamic modifications. 302,000 lb takeoff weight (later 312,000 lb), 15,400 lbf P&W JT4A-3 or 17,500 lbf P&W JT4A-11 turbojet engines. First flight in 1958; 69 built from 1958-1963.
  • 707-320B: 707-320 powered by 18,000 lbf P&W JT3D-3 or 19,000 lbf JT3D-7 turbofan engines. 3-foot wing extension over 707-320 with a new leading edge, plus taller vertical stabiliser from 707-120B. 328,000 lb. takeoff weight (335,000 lb after 1965 with 707-320C landing gear; these aircraft also known as 707-320 Advanced or 707-320BA-H). First flight in 1962; 174 built from 1962-1975.
  • 707-320C: Convertible passenger/freight variant of 707-320B. 11 foot, 2 inch main deck cargo door on port side of forward fuselage with removable internal bulkhead to permit mixed passenger/freight use. Additional overwing emergency exit to increase passenger capacity. Wing modified with new leading edge flaps. Revised landing gear gives 335,000 lb. takeoff weight. First flight in 1963, 337 built from 1963-1979.
  • 707-400: Generic designation of 707-4** types; variant with 17500# Rolls-Royce Conway engines.
  • 707-400C: Generic designation of 707-4**C types.
  • 707-420: 707-320 fitted with 18,000 lbf RR Conway 508 turbofan engines plus 40-inch taller vertical stabiliser later adopted in all 707 variants. First flight in 1959; 37 built from 1959-1963.
  • 707-620: Proposed stretched variant of 707-320B intended for domestic use, intended competitor of Douglas DC-8-61. Cancelled in 1966 in favour of Boeing 747 program.
  • 707-700: Test-bed for 23000# GE-SNECMA CFM56 turbofan, developed by General Electric and French SNECMA (1979), a 707-320C fitted with 22,000 lbf CFM56-2 high-bypass turbofan engines. One built in 1978; program cancelled by Boeing in 1980 in favour of Boeing 757 program. Aircraft later converted back into 707-320C and sold.
  • 707-803: Internal designation for what became the Model 707-320 INTERCONTINENTAL STRATOLINER.
  • 707-820(505): Proposed stretched variant of 707-320B for intercontinental use, intended competitor of Douglas DC-8-63. 45-foot fuselage stretch and 10-foot wingspan extension from 707-320B, 22,500 lbf P&W JT3D-15 turbofan engines. Cancelled in 1966 in favour of Boeing 747 program.
  • 707-820(506): Proposed stretched variant of 707-320B for intercontinental use, intended competitor of Douglas DC-8-63. 55-foot fuselage stretch and 10-foot wingspan extension from 707-320B, 22,500 lbf P&W JT3D-15 turbofan engines. Cancelled in 1966 in favour of Boeing 747 program.
  • 707C: Cargo version probably a generic designation for all 707-***C aircraft.

NOTE: So-called "generic" designations were not actually carried by any aircraft, since these actually carried a unique dash number corresponding to the customer and starting at -*20 (e.g. 707 Series 100 were actually -120, -123, -128, -153 etc.).

Thanks a lot to MrChips for providing a great update to this entry.
 

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MODEL 708

5-seat, four-engined supersonic bomber project (1953).

MODEL 709

No details ; appears in the Richard K. Smith archives; possibly related to a final B-59 design.

MODEL 712

Proposal for the USAF's WS-202A Long Range Interceptor (LRI) competition (1954).
 

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MODEL 713

First set of proposals for USAF's WS-110 bomber competition.
  • 713-1: Scaled up B-52s with four twin-engine nacelles under each wing instead of two.
  • 713-135
  • 713-138
 

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MODEL 717

Transport version of the Model 367-80 "DASH 80" prototype, retaining its circular fuselage section. Initially developed as the Model 367-138B.
  • 717: Projected commercial passenger transport.
  • 717-100A: U.S. Air Force KC-135A Stratotanker tanker.
  • 717-146: U.S. Air Force KC-135A Stratotanker tanker.
  • 717-148: U.S. Air Force KC-135A Stratotanker tanker.
  • 717-157: U.S. Air Force C-135A Stratolifter cargo/transport.
  • 717-158: U.S. Air Force C-135B Stratolifter cargo/transport; turbofan-powered variant.
  • 717-165: French Armée de l'Air C-135F, later C-135FR when refitted with CFM56 engines.
  • 717-166: U.S. Air Force KC-135B Stratotanker tanker; turbofan-powered variant.
MODEL 717 (2)
Reuse of designation for a redesigned version of the McDonnell Douglas MD-95, itself a derivative of the DC-9/MD-80 series.
  • 717-200: Boeing 717 (1998, 156 built).
 

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MODEL 720

Refined and shortened Model 707, initially designated Model 707-20.
  • 720 (707-020): 707-120 with 9-foot shorter fuselage intended for short-medium range flights. Wing fitted with revised leading edge and wing root glove, improving takeoff performance and increasing top speed. 12,000 lbf P&W JT3C-7 turbojet engines, 222,000 lb. takeoff weight. First flight in 1959; 65 built from 1959-1963.

    720B: 720 fitted with 17,000 lbf P&W JT3D-3 turbofan engines, 234,000 lb. takeoff weight. First flight in 1960; 89 built from 1960-1967, plus 10 conversions from 720s. A 720-023B has been used as flying test-bed by Pratt & Whitney in Canada, and other 720B flying test-beds have existed.
 

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MODEL 722

Alternate WS-110 proposal for the U. S. Air Force? (other source lists it as a WS-125A proposal) (1955).
 

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MODEL 724

Series of supersonic bomber projects for WS-110 with partly jettisonable wings (1955).
  • 724-13
  • 724-16
  • 724-1000
  • 724-1001
 

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MODEL 725

Series of supersonic bomber proposals for the U. S. Air Force's WS-110A competition (1956).
  • 725-21
  • 725-39
  • 725-79
  • 725-80
  • 725-87
  • 725-91
  • 725-100
  • 725-101
  • 725-229
  • 725-234
 

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MODEL 727

Trijet airliner series introduced in 1963.
  • 727-30
  • 727-100: Generic designation of 727-1** types (408 built).
  • 727-100C: Generic designation of 727-1**C types (164 built).
  • 727-100QC
  • 727-100F: Freighter version.
  • 727-100 UDF: 727-100 modified as a flying test-bed with the right-hand JT8D replaced by a GE-36 unducted fan.
  • 727-100 UHB: Planned ultra-high bypass propfan-powered 727-100 derivative powered by 10000 hp PW/Allison 578-DX propfan engines.
  • 727-200: Generic designation for 727-2** types; 189-place stretched version (1967).
  • 727-200 Advanced: Version with 17400# JT8D engines.
  • 727-200F: Freighter version (1983).
  • 727-257: Early study with two engines on each side of fuselage above and behind the wing.
  • 727-264C: Early study with two engines mounted on aft fuselage and with speed capsules for increased Mach number.
  • 727-265: Early study
  • 727-300A: Projected increased capacity version with JT8D-200 engines, minimum change variant (1974).
  • 727-300B: Projected longer fuselage version with JT8D-200 engines, room for 189 passengers (1974).
  • 727-474: Design study, basically a four-engined variant of -264C.
  • 727-475: Design study, basically a scaled-down Model 720; jokingly dubbed the "720 Junior" by some company execs.
 

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MODEL 728

Possibly a proposal for the RoBo program.

MODEL 729

Possibly allocated to a series of UTX or UCX proposals.
 

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MODEL 730

Series of SEV (Surface Effect Vehicle) proposals.
  • 730-71: Arctic Cargo Vessel (ACV)
  • 730-72: Arctic Cargo Vessel (ACV)
 

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MODEL 731

Transport aircraft proposal to SOR-182/SS-476L specifications.

MODEL 732


A "Model 732" is mentioned in the Bernard Lindenbaum Vertical Flight Research Collection, p.111, but was it a Boeing project?
 

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MODEL 733

Series of widely different supersonic designs for both the civilian and military markets.
  • 733-94: Military project with canards.
  • 733-101: Supersonic airliner project (1962-63).
  • 733-197: Supersonic airliner project (1962-63).
  • 733-290: Supersonic airliner project (1962-63).
  • 733-362: Supersonic airliner project.
  • 733-363: Supersonic airliner project.
  • 733-373: Supersonic airliner project, variant powered by Pratt and Whitney engines.
  • 733-390: Supersonic airliner project, variant powered by General Electric engines.
  • 733-394: Supersonic airliner project, variant powered by Pratt and Whitney JTF17A-20B engines.
  • 733-606-12: Supercruiser supersonic interceptor.
  • 733-606-19: Supercruiser supersonic interceptor.
  • 733-606A: Supercruiser supersonic interceptor.
  • 733-633: Inside designation of commercial Model 2707-300.
  • 733-790
 

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MODEL 735 « CARGO JET TRANSPORT »

707-derived freighter aircraft with swing-tail for easy loading.
 

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MODEL 737

Twin-engined short- to medium- range ailiner series.

  • 737-100: Basic version (1967).
  • 737-200: Longer version (1967).
  • 737-200C: Variant with side cargo doors.
  • 737-200QC: "Quick Change" version.
  • 737-200F
  • 737-200 Advanced
  • 737-200 Executive: also known as the Boeing 737 Executive.
  • 737-253: USAF T-43A/CT-43A Gator.
  • 737-300: (1984).
  • 737-400: 70-place stretched version of 737-300 (1988).
  • 737-500: Modernized, shortened version of 737-300 (1989).
  • 737-600: 110/132-place modernized 737 with later model CFM56-7Bs and new 102'6" wing (1998).
  • 737-700: Stretched 737-600 (1997).
  • 737-700C
  • 737-700W: Variant with winglets.
  • 737-700 BBJ: Boeing Business Jet variant of -700W.
  • 737-7: Boeing 737 MAX development of 737-700W.
  • 737-800: Stretched 737-700 (1997).
  • 737-800W: Variant with winglets.
  • 737-800 BBJ2: Boeing Business Jet variant of -800W.
  • 737-800ERX: U.S. Navy P-8 Poseidon (MMA).
  • 737-8: Boeing 737 MAX development of 737-800W.
  • 737-900: Stretched 737-800 (2000).
  • 737-900ER: Extended range proposal with winglets.
  • 737-9: Boeing 737 MAX development of 737-900ER.
  • 737 PXL: four-jet patrol version of 737 proposed to Japanese Navy.
 

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