Mitsubishi designations

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FIRST SYSTEM

F-1B1 civilian built by Saseho Naval Works (J-BBAG) (1930)
F-3B1 civilian only one built, cancelled 8.29 (J-TUKL) (1926)

FT-1.2 Hibari civilian one registered as J-TEQV > J-BAUG (1925)

R-1.2 Junen civilian 28 registrations for approximately 22 aircraft (1925)
R-2 Navy Type R version of Rohrbach Ro.II, one built (1925)
R-2.2 civilian similar to Navy type 10-2; 13 aircraft registered (1926)
R-4 civilian two registered as J-BIAD and J-BCHX (1935?)
R-4A civilian conversion of one Navy Type 10-2, registered as J-BAYG (1929)

RF-3A2 civilian conversion of one R-1.2 (1930)

RT-1.2 civilian one registered as J-BETD (1932)
RT-3A2 civilian conversion of one R-1.2 (1931)

S-1.2 civilian one registered as J-BBIG (1930)

T-1.1 civilian one registered as J-BARL, cancelled 8.30 (1928)
T-1.2 civilian 11 aircraft registered (1927)
T-2 ?




SECOND SYSTEM

2MB1 Army Experimental Light Bomber > Type 87 Light Bomber (1926)
2MB2 Army Light bomber prototype > Washi-type Light bomber

3ME6 (1) civilian no details; one registered as J-BCUG, destroyed 12.34 (1931)

1MF1 Navy Type 10-1 Experimental Carrier Fighter (1921)
1MF1A Navy Type 10-1 Experimental Carrier Fighter (1921)
1MF2 Navy Experimental Hayabusa-type fighter
1MF3 Navy Type 10-2 Carrier Fighter (1923)
1MF3B Navy Type 10-2 Carrier Fighter
1MF4 Navy Type 10-2 Carrier Fighter
1MF5 Navy Type 10-2 Carrier Fighter
1MF5A Navy Type 10-2 Carrier Fighter
1MF9 Navy Taka-type Carrier Fighter
1MF10 Navy Experimental 7-Shi Carrier Fighter; two prototypes built (1933)

2MR1 Navy Type 10-1 Carrier Reconnaissance Plane; designed by British engineer Smith [C1M1] (1922)
2MR2 Navy Type 10-2 Carrier Reconnaissance Plane [C1M2] (1922)
2MR3 Navy Carrier Reconnaissance Plane [C1M3]
2MR4 Navy Carrier Reconnaissance Plane [C1M4]
2MR7 Navy Carrier Reconnaissance Plane (1930)
2MR8 Navy Type 92 Reconnaissance Plane; 130 aircraft produced (1931)
2MR8 civilian one registered as J-BEQG (1934)

3MR3 project alternate design by British engineer Herbert Smith
3MR4 Navy Type 89-1 Carrier Attack, designed by Herbert Smith (Blackburn T.7B) [B2M1] (1930)
3MR4 Navy Type 89-2 Carrier Attack [B2M2]
3MR5 project alternate design by British engineer Herbert Smith

2MRT1 Navy Carrier Reconnaissance Plane
2MRT1A Navy Carrier Reconnaissance Plane
2MRT2 Navy Carrier Reconnaissance Plane
2MRT2A Navy Carrier Reconnaissance Plane
2MRT3 Navy Carrier Reconnaissance Plane
2MRT3A Navy Carrier Reconnaissance Plane

MS1 civilian one K3M-type aircraft registered as J-BABG

4MS1 =Ka-2 Navy Type 90 Airborne Operations Trainer [K3M1] "Pine" (1930)
4MS2 =Ka-2 Navy Type 90 Airborne Operations Trainer [K3M2] "Pine"
4MS3?=Ka-2 Navy Type 90 Airborne Operations Trainer [K3M3] "Pine"

1MT1N Navy Type 10 Carrier Torpedo Aircraft (Navy) 20 aircraft built 1922

2MT1 Navy Carrier Attack Aircraft (prototype of B1M1); designed by British engineer Herbert Smith (1923)
2MT2 Navy Type 13-1 Carrier Attack Aircraft [B1M1]
2MT3 Navy Type 13-1 Carrier Attack Aircraft [B1M1]
2MT4 Ohtori Navy Reconnaissance Seaplane; experimental seaplane version of B1M1 (1925)
2MT5 Tora Navy Type 13-2 Carrier Attack Aircraft [B1M2] or a different torpedo bomber? (1926)

3MT2 Navy Type 13-3 Carrier Attack Aircraft [B1M3] (1931)
3MT4 =Ka-3 Navy Carrier Attack Aircraft; Blackburn T.7B prototype of B2M1, derived from 3MR4 design (2)
3MT5 Navy Experimental 7-Shi Twin-Engined Carrier Attack Aircraft
3MT5A Navy Type 93 Land-based Attack Aircraft; sometimes wrongly designated as "G1M"
3MT10=Ka-5 Navy Carrier Attack Aircraft, one prototype built (1932)

NOTES:

(1) "3ME" doesn't seem to correspond to anything. Could it be an old typo?
(2) There may have been a confusion between the 3MR and 3MT series in some sources.




THIRD SYSTEM

Ka-1 Hanriot HD.14
Ka-2 Type 90 Airborne Operations Trainer [K3M]
Ka-3 Blackburn T.7B prototypes derived from 3MR4 design
Ka-5 7-Shi Attack Bomber
Ka-8 8-Shi Two-seat Carrier Fighter
Ka-9 8-Shi Experimental Reconnaissance Plane [G1M1]
Ka-12 9-Shi Carrier Attack Bomber [B4M1]
Ka-14 9-Shi Experimental Carrier Fighter [A5M] "Claude"
Ka-15 Experimental Attack Bomber [G3M1 Rikko] "Nell"
Ka-16 10-Shi Carrier Torpedo Bomber [B5M1] "Mabel" (also as "Kate 61")
Ka-17 10-Shi Observation Seaplane [F1M1 Reikan] "Pete"
Ka-18 11-Shi Experimental Crew Trainer [K7M1]




FOURTH SYSTEM


M-20 14-Shi Interceptor Fighter [J2M Raiden] "Jack"
M-50 17-Shi Experimental Type "Ko" ( A ) Carrier Fighter [A7M Reppū] "Sam"
M-60 16-Shi Attack Bomber [G7M Taizan]
M-70 17-Shi Experimental Type "Otsu" ( B ) [J4M Senden] "Luke" (M-70A and B sub-variants)




Of course, this is all very incomplete, but I wasn't able to find more in the numerous sources I searched.
There were MANY more Mitsubishi types whose designations are unknown...
Can anyone add anything?
 
Also:

MC-1 civilian Experimental Biplane Airliner; only one built and registered as J-BAKG (1928)
MC-20-I Army Ki-57-I "Topsy"
MC-20-I civilian Passenger Transport (variant of Ki-57-I); 28 aircraft registered (1941)
MC-20-II Army Ki-57-II "Topsy"
MC-20-II civilian Passenger Transport (variant of Ki-57-II); 17 aircraft registered (1942)
MC-21 civilian Passenger Transport; 7 aircraft registered (1939)
MC-21-II civilian Passenger Transport; 11 aircraft registered (1943)
 
Hi,


MC-2 was a also a biplane passenger transport aircraft,powered by three 215 hp
Armstrong Siddeley Lynx radial engines,may be project only.

1MF2T single seat fighter (not sure)


2MR5 was a special purpose carrier recce aircraft (Type 10 Carrier Recce)


2MS1 (civil) Tombo-Type,two seat biplane trainer (Hanriot HD-28)


MS-1 (civil) single engined high-wing light passenger aircraft,based on Navy 90-2
crew trainer aircraft
 
According to this page, the MC-21 designation may have been a typo for MC-2-I.
As the Google translator really does a very poor job, I would appreciate if any Japanese member could confirm this...

http://popular-wife.info/%E4%B8%8B%E6%B4%9E%E6%88%B8/%E7%9B%AE%E9%80%9A%E3%81%97/
 
Who said that,


the google translate is not pacific,they meant MC-20-I,and the Mitsubishi MC-21 was a civil version of
Ki-21 heavy bomber,as twin engined aircraft,it was not related MC-2 three engined.


http://en.wikipedia.org/wiki/Mitsubishi_Ki-21
 
MRT airplanes category was created for training ( T ) of reconnaissance ( R ) crews.
It's worth to remember that both Mitsubishi army and navy aircraft projects had the same designation systems, so there were two different fighters
designated 1MF2 :
- Navy fighter 1MF2 being the second version of basic 1MF1 Navy type 10 carrier fighter.
- Army fighter 1MF2 Hayabusa parasol type monoplane.
http://www.aviastar.org/air/japan/mitsubishi_1mf2.php
 
Welcome your return my dear Boogey,

I miss you my friend.
 
@ hesham Thank You very much for Your warm welcome. Still I have some problems with my eyes and my PC isn't ready to work yet.
I hope for my steady return in several weeks.

Another Army aircraft of the second system was 2MR1 Tobi ( Tobi is a member of the hawk family ) - single Mitsubishi-built HS 12-cylinder inline-V
450 - 600 hp engined, crew of two, reconnaissance biplane. The first prototype was completed in July 1927. Only two machines were built.
 
OK my dear Boogey,take your time,and I will wait your good articles.
 
@Skyblazer
THIRD SYSTEM

Ka-1 Hanriot HD.14
Ka-2 Type 90 Airborne Operations Trainer [K3M]
Ka-3 Blackburn T.7B prototypes derived from 3MR4 design
Ka-5 7-Shi Attack Bomber
Ka-8 8-Shi Two-seat Carrier Fighter
Ka-9 8-Shi Experimental Reconnaissance Plane [G1M1]
Ka-12 9-Shi Carrier Attack Bomber [B4M1]
Ka-14 9-Shi Experimental Carrier Fighter [A5M] "Claude"
Ka-15 Experimental Attack Bomber [G3M1 Rikko] "Nell"
Ka-16 10-Shi Carrier Torpedo Bomber [B5M1] "Mabel" (also as "Kate 61")
Ka-17 10-Shi Observation Seaplane [F1M1 Reikan] "Pete"
Ka-18 11-Shi Experimental Crew Trainer [K7M1]

Ka-5 7-Shi Attack Bomber was 7-Shi Experimental Single-engined Carrier Torpedo-Bomber 3MT10.
 
Ka-4 Navy Type 93 Land-based Attack Plane - 3MT5; sometimes called "G1M" (1933)
 
Thats very interesting, but Boogey and snark you have evidence for your designations?
 
My information comes from " Japońskie Samoloty Marynarki 1912 - 1945 " Tadeusz Januszewski & Krzysztof Zalewski, Wydawnictwo Lampart,
Warszawa 2000, vol. 2, p. 27 - 28.

Also http://www.airwar.ru/enc/bww1/3mt10.html
 

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Re: Reply #13:

http://arawasi-wildeagles.blogspot.com/2014/11/mitsubishi-ka-14-3mt5.html

“A photo that often appears cropped featuring the very first prototype of the Experimental 9-shi Single Seat Fighter or Ka-14 next to one of the eleven prototypes of the Type 93 Attack Bomber or Ka-4 or 3MT5.”

I have another source, but I'm away from my library for the next several weeks. I will post it then. Regards, Harry
 
All the aircraft in the Mitsubishi Ka designation system described by Skyblazer are of the Japanese Imperial Navy types. What about Army airplanes ?
I was looking for manufacturer's designations of Ki-15, Ki-30 and Ki-51 a.s.o. without any resulsts.
 
Hi Boogey

I don’t think there are any Army-related Mitsubishi “Ka-“ designations to find; and I believe the answer lies in the difference between the IJA and IJN procurement systems. In 1932, the IJA adopted a system in which all aircraft designed to an IJAAF requirement were assigned a unique Kitai, or airframe, number at the project stage. The IJN, on the other hand, relied on the manufacturer’s factory designation, or the “-shi” system (which applied to a specification, not a specific airframe), to apply to designs during development. This changed in 1939 when the IJN introduced the Service Airplane Development Program codes, which were manufacturer-specific and assigned to new designs at the project stage.
Mitsubishi apparently stopped assigning in-house designations to Army designs in 1932, when the Kitai system was introduced; and did the same for Navy designs in 1939. In both cases, the need for in-house designations had evaporated, since distinct official designations were assigned at each particular design’s inception and used internally thereafter.
This is, of course, my own observation, but I believe it’s correct.

Blackkite? Anything to my theory, according to Japanese sources? Regards, Harry
 
3MT2 Navy Type 13-3 Carrier Attack Aircraft [B1M3] (1931)
3MT4 =Ka-3 Navy Carrier Attack Aircraft; Blackburn T.7B prototype of B2M1, derived from 3MR4 design (2)

3MT3 Navy Carrier Attack Aircraft, project designed by Herbert Smith from Sopwith Aircraft Co., biplane, engine Armstrong Siddley Leopard 650 hp.

Ka-3 was manufacturer designation of the 3MT4 ( carrier Torpedo Attack accepted to series production as B2M1 ), not Reconnaissance 3MR4.

@ snark
Thanks for Your explanation, it seems to be quite logical. There still Ka-6, Ka-7, Ka-10 and Ka-11 numbers are lacking to complete our list.
 
@Boogey

Thanks for posting the 3MT3 information and the 3MT4 clarification. Amazing that details are still emerging, after 70-odd years...

Happy 2018! Harry
 
The designation 3MR often seen in literature and internet is incorrect, it's mostly reffering to 3MT torpedo-bomber aircraft,
where the number 3 means three men crew in which a bombardier is needed. The two men in a reconnaissance airplane of that time are quite enough
and that's why there appears only 2MR category.
 
Re: Reply #15

https://www.secretprojects.co.uk/forum/index.php/topic,27630.msg235506.html#msg235506


Original source: The New and Powerful Aircraft of a Phantom, Kojinsha, 1996, ISBN 4-7698-2142-5

“7-shi Twin-engine carrier attack bomber, Mitsubishi, Ka-4” (from “–Shi” table)

As promised Regards, Harry
 
OK, as it was mentioned earlier the designation Ka-4 refers simply to the Mitsubishi 3MT5.
 
So this is a bit of a gap for me. Around 1922 there is a plane that is designated N.1 in Alla Italia. See some magpics from that time. It is a 300 hp Hispano Suiza single seat fighter plane. The N comes of course from the Mitsubishi Naienki plant but I can't match it to any plane mentioned above. It would put it in the 1MF build time range but I am not really sure.

1922 Aviation Week -20180929-037.jpg
1922 Aviation Week Plane #2

1923 L'Ala Italia 20191209-012.jpg

1923 L'Ala Italia
 

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