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11-Shi Navy Type 99 Carrier Bomber competition (D3A, D3N)

swallow

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Hello everyone
Looking for more information of the Aichi D3A Val dive bomber competition with Mitsubishi and Nakajima or the 11-Shi Programme.
Enyone knowing more ?

Source : Aichi D3A1/2 Val Peter C.Smith
 

Apophenia

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The two competitors for 11-shi were the Mitsubishi D3M1 and Nakajima D3N1.

The latter was powered by a 730 hp Nakajima Hakari 1 radial (like the Aichi D3A1 prototype).

Article/photo (attached): Arawasi Magazine (Issue 2, Oct 2005)

Specs from the web (in Czech): http://forum.valka.cz/viewtopic.php/t/30090

Side view & details: http://www.samoloty.ow.pl/str252.htm

No details on the Mitsubishi entry, I'm afraid
 

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hesham

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Thank you my dear Blackkite,

in 1936 for 11-shi carrier bomber,the tenders were Aichi D3A1,
Nakajima D3N1 and Mitsubishi (suppose D3M1),and after the
mock-up was comlpeted in 1937,it was abandoned.
Who know more about it ?.
 

blackkite

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Hi my dear hesham!
You are absolutely right.
11-shi Carrier Dive Bomber was born from the competition between Aichi D3A and Nakajima D3N1.
D3N1 had retractable undercarriage with speed brake and under wing perforated speed brake panel same as SBD.
Chief designer was Ryozo Yamamoto.
Engine was Hikari-1 type.(Max power 820HP 3,400m).
MTOW:3,400kg, Wing span:14.5m, Overall length:8.8m, Wing area:34m2, Max speed:352km/h(3,000m), Range:1,519km.
3 planes were manufactured and 1 was survived till the end of the war.
Unfortunately all pictures and drawings were lost.
http://www.geocities.co.jp/Bookend-Ohgai/3853/jnrs/jnrsC224c.htm
 

lark

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About the Nakajima D3N1...

In the Japanese magazine-English text- ARAWASI issue 2-October 2005 is
an article written by Mike Goodwin ,of J-Aircraft fame, about the Nakajima D3N1
Navy Experimental 11-Shi Carrier bomber.
In this well written account is a photo showing this bomber.The picture is taken
3-quarters from the rear.There are also a few detail shots, probably taken from the main picture.
Also mentioned is a sideview drawing of this plane by Mr.Shorzoe Abe in
Japanese Aircraft 1910-1941-Putnam.
As far as I saw , the drawing is on page 237.
 

blackkite

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blackkite

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Japanese text says that this was a Mitsubishi 11-shi dive bomber D3M1 mockup or strength test model with her design team.
Middle was Jiro Horikoshi. Mitsubishi gave up to develop D3M1 soon because they found that it was impossible to manufacture D3M1 until time limit, and began to develop 12-shi carrier fighter A6M.
source:Maru magazine special edition "JIRO HORIKOSHI WAY OF THE ZERO FIGHTER" in 15/8/2013
 

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Stargazer2006

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Very nice. And also I love the friendly attitude of the workers.

Thanks a lot for sharing, blackkite!
 

windswords

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So the D3M1 had inverted gull wings? Amyone have any other pics or drawings of this plane?
 
C

CostasTT

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windswords said:
So the D3M1 had inverted gull wings? Amyone have any other pics or drawings of this plane?
The 11-Shi mock-up appears to have straight wings.
The aircraft illustrated on the magazine cover is the first Mitsubishi Ka-14 prototype built to the 9-Shi specification and is depicted as originally flown with the short-chord cowling, which was later supplanted by a closer fitting, longer chord cowling incorporating fairings for the cylinder rocker arms.
 

blackkite

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Hi! Nakajima D3N1 wind tunnel test model.
 

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