Douglas Designations

[Antonio]

Many thanks nugo

 

[Maveric]

Hi nugo,

Letectvi+Kosmonavtica is a czech magazine, not polish.

 

[lark]

Thanks nugo!

 

[Maveric]

Hi all,

Douglas D.S. 425 / C.74A
Douglas D.S. 448 / D.C. 7 project 1942
Douglas D.S. 478 / XC.112A
Douglas D.S. 490 / XC.114A
Model 1198 and 1809 are Versions of the Douglas D.C.6
Model 1848 and 1867 are Versions of the Douglas D.C.7

Source: Airliner Tech Douglas D.C.6 and D.C.7

Servus

 

[Maveric]

Hi all,

any corrections:

D.S. = Detail Specification
T.S. = Type Specification

D.S. 477 = D.C. 6
T.S. 1159 = D.C. 6 ( z.B. for SABENA and Howard Hughes )
T.S. 1156 = D.C. 6 ( z.B. for DELTA )
D.S. 1198 = D.C.6B ( for United )
D.S. 1225 = D.C.6B ( for ARAMCO )
D.S. 1809 = D.C.6B ( for Western )
D.S. 1289 = D.C.7B
? 1134 = C.118A/R6D1 Turboprop
? 1867 = D.C.6 Turboprop
D.S. 1848 = D.C.7D

 

[Maveric]

Found this little Text for the C.74...

Same Source

Maveric

 

[nugo]

Hi All!

Model DS-636(aka Model 636)----Design and installation of BuAer Specification Ejectable Cocpit
Capsule.

Model DS-2728(aka Model 2728)----Saturn S-IVB-D stage.

 

[nugo]

Hi hesham!

I know that: Douglas Model 1355---Douglas proposal of the Long Range Interceptor, but there is written that:Model-1355 fighter-bomber to replace F-105 (I believed D-855,as re-allocated)

 

[hesham]

My dear Nugo,

when I read the Douglas list I found there are many designs get serias
1000,and when you search about them you discover that they appeared
in 1950s,and that means may be Douglas add 500 or 1000 to some of
its series,I suggested thsi idea, that's all.
And here may be D-954 aircraft,which I displayed it before;
http://www.secretprojects.co.uk/forum/index.php/topic,6117.0.html

 

[nugo]

Douglas Model 2085---SOR-182/SS-476L, aerodynamically similar to Lockheed C-141.

 

[Steve Pace]

Here's a partial model list for Douglas.

 

[Antonio]

Thanks a lot!

 

[Stargazer]

Thanks. It's always nice when we can put our resources together to make advances in aircraft designation knowledge!

I found one mistake in your list:

• The C-133A Cargomaster was Model 1333, NOT 3333.

I am interested in knowing your sources for Models 9 and 10 (Dolphin) as well as the A-17 designations (378 and 410). It's the first time I hear of these!

 

[aim9xray]

Regarding the C-133, I can report the following:

Baseline
C-133A Logistics Cargo Carrier
Model 1333 Logistic

C-133 Wide-Chord [Turbine]T34-P-6 (PT2G-4) Engine Configurations
Model 1379 Logistic
Model 1380 Tactical

C-133 Minimum-Change Configurations with Allison T54 Engines
Model 1374 Logistic
Model 1374B Tactical

C-133 Optimum-Change Configurations with Allison T54 Engines
Model 1371 Logistic
Model 1371A Tactical

Logistics: Intended for use as a cargo aircraft.
Tactical: Incorporates the basic structural capabilities required for the specific provisions which will permit the aircraft to be used for the transportation of troops, aerial delivery operations, or for the evacuation of wounded personnel. Options include the installation of an internal second deck to provide additional floorspace to troop seating. (Model 1380 ultimate "emergency" troop seating capacity is 288 persons.)

The T54 is described as follows: "Allison T-54 consists of two axial flow rotors connected to a single-rotation gearbox; each section is identical to those used on the Allison T-56 engine. The rating of the T-54 is 8,100 ESHP as compared to 6,000 ESHP for a T-34 engine. The cruise consumption for the T-34 is 33 percent hugher than that of the T-54."

Edit: Add source: Douglas Report No. LB-22388, 1 March 1956

 

[nugo]

Hi All!

XB-19---DS-167C

Model 1028---XCG-19-DO, glider, all-metal stressed-skin, cancelled.

 

[Stargazer]

Thank you guys for these valuable pieces of information!

 

[elmayerle]

For reference, the T54 was to the T56 as the T40 was to the T38. I suspect power from 4 T54s would be substantial for a transport.

 

[overscan (PaulMM)]

From Tony Buttler

New additions for the Douglas Projects list - all for the 1,000 series from Santa Monica (i.e. separate to the D-series from El Segundo).
Model 1011 - All-Weather Fighter, 1945.
Model 1152 - PR Version of DC-6F.
Model 1361 - MX770 - XB-64A. This was North American, so I assume Douglas were also involved.
Model 1906 - USAF Transport - I believe the competitor to Lockheed Hercules.

 

[nugo]

Hi overscan!

Model 1011---All-Weather Fighter (1945), could be competition of the Curtiss-Wright XP-87 and Northrop XP-89 (I think so).
Model 1152---PR Version of DC-6F.
how to decipher PR ?

 

[overscan (PaulMM)]

Photo Reconnaissance.

Model 1906A discussed here: http://www.secretprojects.co.uk/forum/index.php/topic,4601.0/highlight,douglas+1906.html

 

[nugo]

Hi All!

D-1920---Swing-tail DC-8 (proposal)

 

[hesham]

Hi,

here is the D-969 or DC-X-200 in NASA report ,but with a very strange designated
the LB-488,and I don't know what it is meaning ?.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840020666_1984020666.pdf

 

[Stargazer]

Link is NOT working! Hope the NASA servers aren't down again...

 

[Maveric]

...sorry Stargazer, but the link is working :-\

 

[Stargazer]

Indeed it is now... Wonder what happened earlier on. Perhaps a moderator can get us rid of these three posts? Thanks!

 

[Stargazer]

Hi,

here is the D-969 or DC-X-200 in NASA report ,but with a very strange designated
the LB-488,and I don't know what it is meaning ?.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840020666_1984020666.pdf

Please read more carefully, hesham:

Four wind tunnel tests were conducted between 4 April 1978 and 18 May 1979 to aid in the evaluation of the candidate high-aspect-ratio supercritical wing configurations. The wide-body configuration D-969N-21 was tested with the five wings (...) . In all four tests, six-component force and moment data and wing pressure data were collected. Some flow-visualization photographs and wing wake pressure profile data were also obtained. (...) The first test, designated LB-488A (...) The final test of the series, LB-488D... The tests were conducted in the NASA-Ames Research Center 11-foot transonic wind tunnel.

Very clearly, the LB-488* codes do not correspond to Douglas models or designs. They were allocated (probably by NASA) to wind tunnel tests!

 

[hesham]

Hi,

D-742 Eagle missiles

 

[Stargazer]

My dear Nugo,

when I read the Douglas list I found there are many designs get serias
1000,and when you search about them you discover that they appeared
in 1950s,and that means may be Douglas add 500 or 1000 to some of
its series,I suggested thsi idea, that's all.
And here may be D-954 aircraft,which I displayed it before;
http://www.secretprojects.co.uk/forum/index.php/topic,6117.0.html

From what I saw in the Spangenberg Index, the two 500+ and 1000+ systems were used simultaneously, and even competed for the same specifications sometimes! The explication was a lot simpler than all we assumed earlier: the former applied to the El Segundo division while the latter applied to the Santa Monica division!

 

[Stargazer]

DOUGLAS TWO-LETTER DESIGNATIONS

DA-1 Ambassador parasol wing prototype ordered by Ambassador Airways; crashed on delivery
----------------------------------------------------------------------------------------------------------
DB-1 B-18 Bolo
DB-2 last aircraft in the B-18 contract modified as prototype with gun turret
DB-3 no data (perhaps applied to the B-19 "Hemisphere Bomber" ?)
DB-4 B-18A Bolo (Source: http://books.google.fr/books?id=Ul8hJBp-nmsC&pg=PA36);
other sources claim that the DB-4 was a projected bomber version of the first DC-4 design
DB-5 said to have been a projected bomber version of the DC-5
DB-6 no data (perhaps applied to the B-23 Dragon ?)
DB-7 A-20 Havoc and RAF Boston (Douglas produced derivatives of the Northrop Model 7 design)
DB-8 A-17/A-33 (Douglas produced derivatives of the Northrop Model 8 design)
----------------------------------------------------------------------------------------------------------
DC-1 prototype of the DC-2/DC-3/DST family
DC-2 first production model; impressed as C-32, C-33, C-34, C-38, C-39, C-41 and R2D
DC-3 main production model; impressed as C-41A, C-48 to C-52 / procured as C-47 Skytrain,
C-53 Skytrooper C-117/A Skytrain II/Skytrooper, and R4D
DC-4 (1) large four-engined prototype airliner with triple fins; copied as the Japanese G5N "Liz"
DC-4 (2) enlarged, more powerful derivative of the DC-3; procured as C-54 Skymaster; tests as C-114, C-115, C-116
DC-5 smaller size transport not related to other DC- designs; impressed as C-110 and R3D
DC-6 refined derivative of DC-6; impressed as C-118 Liftmaster and R6D
DC-7 (1) C-74 Globemaster transport and projected derivatives
DC-7 (2) stretched and reengined DC-6; last of the Douglas propliners; no military variant
DC-8 (1) Skybus project, a 34-48 seat commercial transport development of the XB-42 (Model 1004)
DC-8 (2) four-jet transport; competitor of Boeing 707 and Convair 880
DC-9 (1) projected scaled-down version of the DC-8 (Model 1925)
DC-9 (2) short- and medium-range twin-engined liner family which evolved into the MD-80/82 series and Boeing 717
DC-10 large tri-engined long-range airliner which later evolved into the MD-11
----------------------------------------------------------------------------------------------------------
DF flying-boat transport sold to Russia (DF-151)
----------------------------------------------------------------------------------------------------------
DM (see separate topic on Douglas missiles)
----------------------------------------------------------------------------------------------------------
DO no details (DO-204 found); probably related to one of the Army Air Corps's O- series types
----------------------------------------------------------------------------------------------------------
DS (prefix which applied to Design Specifications)
----------------------------------------------------------------------------------------------------------
DT 6-passenger development of Northrop A-17A (DT-203); not built (not to be mistaken for Navy DT series)


DOUGLAS THREE-LETTER DESIGNATIONS

DOS Douglas Observation Seaplane (O-5); World Cruiser converted
----------------------------------------------------------------------------------------------------------
DST Douglas Sleeper Transport; a sleeper transport version of the DC-3
----------------------------------------------------------------------------------------------------------
DWC Douglas World Cruiser; evolved from Navy DT-2 for the first successful round-the-world flight

 

[Stargazer]

I have added some modifications to the above, notably the early allocations of DC-4, DC-7, DC-8 and DC-9.

There remains a confusion over DB-4. The source linked above gives it as the B-18A Bolo, but in a footnote of the previous page, it gives the B-18A as the DB-5! Here are the mentions of the DB- series compiled from that book:

 

[hesham]

Hi,

DB-9 was twin pusher engined tailless medium bomber project,
and it had a twin tail fin mounted at the tip of the wings,
may be submitted to USAAC 39-640 competition with NA
B-25,Martin B-26 and Stearman.

 

[lark]

Hesham ,

This 1935 design should be the Douglas Model 9.
(not DB 9)
Source 'Les Ailes Volante' : Alain Pelletier - ETAI Publ.

 

[Stargazer]

If it's a "Douglas Model 9" from 1935, then it's bound to have been a Northrop design (which, given the description, seems more than likely, and probably very similar Northrop's Avion 1 flying wing), and since Northrop's Models 7 and 8 were redesignated as DB-7 and DB-8 it is also fair to assume that the Model 9 must have been redesignated as DB-9 at the same time as the other two...

 

[hesham]

Hi,

of course the DB-5 was absolutely a twin engined bomber version
of the DC-5 airliner,it remained only a project,and for the DB-9,
it was appeared in 1937 and not 1935.

 

[hesham]

Hi,

Douglas DB-19 one BT-1 was modified as the DB-19 which
was tested by the Imperial Japanese Navy as the DXD1
(Navy Experimental Type D Attack Plane).

http://en.wikipedia.org/wiki/Northrop_BT

 

[Stargazer]

Hi,

Douglas DB-19 one BT-1 was modified as the DB-19 which
was tested by the Imperial Japanese Navy as the DXD1
(Navy Experimental Type D Attack Plane).

http://en.wikipedia.org/wiki/Northrop_BT

Yeah. Also falsely described in some sources as the "Douglas 1X", this was c/n 346, the last USN BT-1 rebuilt as the BT-1S with tricycle gear for carrier trials. Damaged in a ground accident, it was sold back to Douglas Co [NX18995]. It became a company demonstrator sold to Japanese Navy and designated "DXD1 - Navy Experimental Type D Attack Plane"

I've had this designation noted in my lists for years, but I've always treated it with a lot of suspicion. First because the BT-1 design predates the DB- series (DB-8 being an evolution of the BT-1) but also because of the gap between the known DB- numbers and this one... In c/n sequence, the "1X" was followed by plenty of DB-7 and DB-8 types, and no higher DB- model numbers ever appear.

 

[lark]

The Douglas model 9 had indeed Northrop origins.
(Les Avions Northrop-Pelletier-Docavia)
It was never submitted to the Air Corps.

I never found any info of a Douglas DB-9 design or sources about.

 

[lark]

Douglas DB-10 (detail specification DS-259) Douglas Santa Monica developed
proposal for C-103 submitted in October 1938.

sourceouglas Havoc and Boston.The DB-7/A-20 Series.
Crowood 2004-Scott Thompson.

 

[Stargazer]

Douglas DB-10 (detail specification DS-259) Douglas Santa Monica developed
proposal for C-103 submitted in October 1938.

sourceouglas Havoc and Boston.The DB-7/A-20 Series.
Crowood 2004-Scott Thompson.

Very interesting, Paul! But here, once more, there is reason for doubt over the "C-103" designator, since that was allocated MUCH later, in 1942, to the two Grumman G-32A Gulfhawk III biplane demonstrators impressed by USAAF. At the time of this DS-259 specification, the C-series was merely reaching the C-40 mark...

 

[lark]

Very strange Star,
Even a C 103A -late 1938-was described in the a fore mentioned book..