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Japanese "Special Attack" Projects WW2

moin1900

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Hi everybody

I am searching for some drawings, sketches etc. ! Maybe someone can help ?

Nakajima Maru-Ten ( drawing ? )
http://forum.valka.cz/viewtopic.php/title/Nakadzima-Maru-Ten/t/68274

Nakajima "Toka" ( drawing ? ) and Nakajima Ki-230 ( drawing ? )
http://forum.valka.cz/viewtopic.php/title/Nakadzima-Ki-115/t/41520

Kokusai Ki-Go ( drawing ? ) and Kokusai Tsu-Go ( drawing ? )
http://www.samoloty.ow.pl/str003ap.htm

Kokusai "Ta-Go" and Tachikawa Ki-128 "Ta-Go" (drawing ?)
http://forum.valka.cz/viewtopic.php/title/Kokusai-Ta-Go/t/29085

Kawanishi "Baika"
http://forum.valka.cz/viewtopic.php/title/Kawanisi-Baika/t/28825

Mizuno "Shinryu" and Mizuno "Shinryu" 2
http://www.airwar.ru/enc/glider/shinryu.html

"Ohka"
http://www.secretprojects.co.uk/forum/index.php/topic,6081.0/highlight,ohka.html

"Kikka" and "Kikka-Kai"

Maybe you know some other "Special Attack" projects ?

Many Thanks in advance for help
 

lark

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Go to : Site Feedback
choose : Bookshelf & Marketplace--- See :Japanese Secret Projects.
Enjoy.
 

Justo Miranda

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From "Unknown" Nº4 Post-1
 

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Justo Miranda

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From "Unknown" Nº4 Post-2
 

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Pelzig

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Just some real quick bits.

The Maru-Ten was Nakajima's designation for the Kōkoku Heiki No.2, or Empire Weapon No.2. This was a suicide weapon with no landing gear, was catapult launched using RATO, used the Ne-12B engines, and carried a single bomb. It was never built since it soon evolved into the Kitsuka (Kikka).

There was no Nakajima Toka. The Toka was the IJN version of the Nakajima Ki-115 Ko and Showa was to construct the Toka for the IJN as the Showa Toka. So, pretty much a pic of the Ki-115 Ko would suffice for the Toka although the Toka was to be made to accept any IJN radial engine, new or refurbished. Not much is known about the Ki-230, only that it was a development of the Ki-115. What it would have looked like is anyone's guess.

Tachikawa did not produce the Ta-Go. There are two versions. The first is a much larger aircraft built by Captain Yoshiyuka Mizuyama on his own as Tachikawa denied him and his design since he had no official sanction to build it. When his Ta-Go was nearly done, it was burned up during a bombing raid. He then pitched it to Kokusai who did help him with it but only after drastically altering the design into the little Ta-Go you often see pictures of. Mizuyama and Kokusai were successful in getting the Koku Hombu to accept it and the designation Ki-128 was reserved for it but it never entered production. Who would have built it is anyone's guess. It could have been Tachikawa, it might not have.

As for the Shinryu and Shinryu II, the Shinryu was, for sure, a suicide glider but there is debate on the Shinryu II also being a suicide aircraft. I take the stand it was not. To quote myself;

"There has been some conjecture on the mission of the Shinryū II. Some sources make the case that the Shinryū II was to be used much like the Ōka while others come to the conclusion that the Shinryū II was purely for attacking armored ground targets, such as tanks. In both cases, these sources say that the nose of the Shinryū II contained an impact fuzed explosive warhead and once the rocket armament was expended, the pilot would crash the Shinryū II into his final target, be it a ship or tank, using the warhead to deliver the coup de grace. But analysis of the Shinryū II shows that neither mission was likely. The Shinryū II would have been far more complex to build than the Showa Toka or Ōka and the Shinryū II was constructed for maneuverability, high altitude operation, and had a means to land. In addition, the use of the Shinryū II for shimpu missions against tanks makes little sense when there were other, more effective and simpler means (both in service and under development) to eliminate armor. Perhaps this is a case of the first Shinryū glider's role being applied to the Shinryū II or given that the Shinryū II has no letter/numerical designation like other IJN special attack aircraft (such as the Nakajima Kitsuka, Kawanishi Baika, and Showa Toka) that, by extension, the Shinryū II must also be a special attack weapon. This is, of course, not to say that the pilot could not choose for himself to use the Shinryū II as a shimpu aircraft."

Cheers,

Ed


moin1900 said:
Hi everybody

I am searching for some drawings, sketches etc. !
Maybe someone can help ?

Nakajima Maru-Ten ( drawing ? )
http://forum.valka.cz/viewtopic.php/title/Nakadzima-Maru-Ten/t/68274

Nakajima "Toka" ( drawing ? )
Nakajima Ki-230 ( drawing ? )
http://forum.valka.cz/viewtopic.php/title/Nakadzima-Ki-115/t/41520

Kokusai Ki-Go ( drawing ? )
Kokusai Tsu-Go ( drawing ? )
http://www.samoloty.ow.pl/str003ap.htm

Kokusai "Ta-Go"
Tachikawa Ki-128 "Ta-Go" (drawing ?)
http://forum.valka.cz/viewtopic.php/title/Kokusai-Ta-Go/t/29085

Kawanishi "Baika"
http://forum.valka.cz/viewtopic.php/title/Kawanisi-Baika/t/28825

Mizuno "Shinryu"
Mizuno "Shinryu" 2
http://www.airwar.ru/enc/glider/shinryu.html

"Ohka"
http://www.secretprojects.co.uk/forum/index.php/topic,6081.0/highlight,ohka.html

"Kikka" and "Kikka-Kai"
http://www.jedsite.info/aircraft-k/kilo/kikka_series/kikka-series.html

Maybe you know some other "Special Attack" projects ?

Many Thanks in advance for help
moin1900
 

ryusuke

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Dear Mr. Miranda,

As for Baika, I have never heard of Model 2 (launched from submarine) and Model 3 (launched from mother plane).
Tadeusz and I are going to publish the book "Japanese Special Attak Aircraft & Flying Bombs" (Mushroom Model Publications) this spring (maybe).
http: //www.mmpbooks.biz/books/forthcoming.html
In the book, we cover most of those special planes including Baika. As for Baika, we include almost all the information from Japanese source. But there is no information backing up such Model 2 and Model 3 type. If you have the info source backing up those, please tell me. I have never seen such info even in English source yet.

If your information is true, it is a big discovery. But if it is not, we should not confuse the truth.

Regards,
Ryusuke
 

Justo Miranda

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Warning! Warning!
My sources in this case are not sufficiently reliable to use the information for a "Mushroom" book
 

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Pelzig

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All of the contemporary illustrations of the Baika, from the Model 1 to the Model 3, stem from the 1953 book Koku Gijutsu No Zenbo in which Technical Commander Eiichi Iwaya wrote on the Baika and included three sketches of it, depicting each of the three models. No trainer version was illustrated.
 

Abingdon

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Has anyone ever seen an illustration of the catapult being designed for the Ohka Type 43B? There were tests of the caapult in the summer of 1945 according to "Thunder Gods" and one of the "Japanese Monographs" done for CMH indicates that construction of several of the coastal launch sites had begun in the summer of 1945. I've seen the two photos of the Type 43B mock-up, but nothing on the catapult.
 

Abingdon

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Justo:
Nice drawings of the Ohka 43. Can I ask what you based the catapult illustration on? I find it hard to believe that they could get the aircraft into the air with one little powder rocket RATO.

While on the subject of Japane special attack aircraft, here's two photos I found recently at NARA in the US Navy files. (I hope I remember how to post these!) The odd looking fairing is described as "experimental ventral fairig for 800 kg bomb and 4 accelerating rockets for S/E Suicide aircraft.

The other is an odd engine mount on an Ohka. I have a second photo of this from the other side. The Ohka 22 powerplant? It looks like a piston engine to me.
 

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Pelzig

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What you are looking at is part of the Tsu-11 thermojet powerplant for the Oka Model 22. It consisted of a 100hp Hitachi Hatsukaze [Ha-11-11] 11 4-cylinder, inverted inline engine that drove a single-stage compressor. Fuel was injected into the compressed air that was then ignited, producing up to 440lb of thrust.

Searay said:
The other is an odd engine mount on an Ohka. I have a second photo of this from the other side. The Ohka 22 powerplant? It looks like a piston engine to me.
 

Abingdon

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Here's another view of the engine from the other side. Also, here's a pic of what was described as a gas turbine/prop engine under development. The third photo is one of the Ohka revetments, though a Type 11, not Type 43b.
 

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borovik

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Searay said:
Has anyone ever seen an illustration of the catapult being designed for the Ohka Type 43B? There were tests of the caapult in the summer of 1945 according to "Thunder Gods" and one of the "Japanese Monographs" done for CMH indicates that construction of several of the coastal launch sites had begun in the summer of 1945. I've seen the two photos of the Type 43B mock-up, but nothing on the catapult.
Maybe this will help
source:"The Xplane of Imperial Japanese Army & Navy 1924-1945"
 

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Wurger

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Hi guys,

that stupendous image of the turboprop must depict the NE-201, developed by the Tokio Imperial University for the IJArmy. Data:

19 stage axial-flow compressor;
can-type combustion chamber ( 4 cans );
5 stage axial-flow turbine;
lenght - 4373mm;
diameter - 1090mm;
Power - 1870 hp.

Thanks for sharing!
 

Abingdon

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Many thanks to Borovik and Wrger for the info. It was my mistake to question Justo's drawing anyway, as the three rockets were clear once I had taken the time to enlarge it. Since everyone seems interested in the late war engines, here's a bunk more photos from the US Navy files. A mixture of turbojet and liquid rockets. This also includes the Ohka Type 43 mock-up. I'll post this in two groups.
 

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Abingdon

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Here's some more engine photos
 

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Flitzer

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I don't know if these are of any use to you.

There are more on site in file: Flitzer's Japanese Secret Project Profiles.

Have you tried www.j-aircraft.com ?
Cheers
Peter
 

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Abingdon

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Here's a few more pics from the Navy files of Kikka and rocket fighter production plants.
 

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Justo Miranda

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Searay said:
Has anyone ever seen an illustration of the catapult being designed for the Ohka Type 43B? There were tests of the caapult in the summer of 1945 according to "Thunder Gods" and one of the "Japanese Monographs" done for CMH indicates that construction of several of the coastal launch sites had begun in the summer of 1945. I've seen the two photos of the Type 43B mock-up, but nothing on the catapult.

Please see Seiran catapult drawings ...
 

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Justo Miranda

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Searay said:
Justo:
Nice drawings of the Ohka 43. Can I ask what you based the catapult illustration on? I find it hard to believe that they could get the aircraft into the air with one little powder rocket RATO.

While on the subject of Japane special attack aircraft, here's two photos I found recently at NARA in the US Navy files. (I hope I remember how to post these!) The odd looking fairing is described as "experimental ventral fairig for 800 kg bomb and 4 accelerating rockets for S/E Suicide aircraft.

The other is an odd engine mount on an Ohka. I have a second photo of this from the other side. The Ohka 22 powerplant? It looks like a piston engine to me.

Ohka 22 powerplant?
One Tsu-11 Thermojet Campini type
 

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Justo Miranda

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Searay said:
Has anyone ever seen an illustration of the catapult being designed for the Ohka Type 43B? There were tests of the caapult in the summer of 1945 according to "Thunder Gods" and one of the "Japanese Monographs" done for CMH indicates that construction of several of the coastal launch sites had begun in the summer of 1945. I've seen the two photos of the Type 43B mock-up, but nothing on the catapult.
Please see Ohka 43 launch cart drawings
 

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Justo Miranda

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Ne 20 axial turbojet drawing and specifications here
 

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Nick Sumner

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Justo, Searay - thank you for the drawings and photographs, I for one bemoan the lack of info on Japanese aero enngines of the WW2 era, these come as a very pleasant surprise!

Do you perhaps have anything on the piston engine projects being pursued by the Japanese at that time?

This website is useful for info

http://translate.google.com/translate?u=http%3A%2F%2Fwww.warbirds.jp%2Fkakuki%2Fsanko%2Fen_japan.htm&langpair=ja%7Cen&hl=en&ie=UTF8

As is this book

http://www.amazon.co.jp/%E9%99%B8%E6%B5%B7%E8%BB%8D%E8%A9%A6%E4%BD%9C%E6%88%A6%E9%97%98%E6%A9%9F-1-%E3%80%88%E6%AD%B4%E5%8F%B2%E7%BE%A4%E5%83%8F%E3%80%89%E5%A4%AA%E5%B9%B3%E6%B4%8B%E6%88%A6%E5%8F%B2%E3%82%B7%E3%83%AA%E3%83%BC%E3%82%BA-31/dp/4056025096/ref=sr_11_1?ie=UTF8&qid=1236861797&sr=11-1

but both lack detailed pictures and are hard going if you don't read Japanese!
 

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Engines are not my speciality, but here's a couple of shots of Japanese superchargers. The third shot shows some RATO mountings. All from NARA US Navy files.
 

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frank

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Superchargers or turbochargers?


Searay said:
Engines are not my speciality, but here's a couple of shots of Japanese superchargers. The third shot shows some RATO mountings. All from NARA US Navy files.
 

Abingdon

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Here's some more Japanese jet/rocket engine stuff. The first photo shots the Baika pulse-jet engine along with several other rocket and jet engines. The second photo was taken at the same facility and to be quite honest, I have no idea what all the bits are. maybe of interest to engine enthusiasts.
 

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hole in the ground

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do i spy bits for a turbo prop?

just behind the complete engine there is a prop shaft coming off something and there is a big 6 bladed prop laying on the floor
 

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Here's a scale model depiction of the Ohka Type 43 along with a Photoshop illustration based on the info supplied here a few months back.
 

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Clioman

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To add to the discussion, the lead article in the latest issue of Air Power History magaine (Summer '09), pub'd by the [US] Air Force Historical Foundation, has an article that might be of interest: "Racing Against Invasion: Engineering a Kamikaze 'Cruise Missile'," by Thomas Momiyama; he makes some good use of reference materials in Japanese, and he lays out some of the background on the MXY7 machines in the Smithsonian Air & Space Museum's collection.
 

Vladimir

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Did any one have good Ohka Type 43 three-view?
 

blackkite

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Hi!
http://www.secretprojects.co.uk/forum/index.php/topic,6081.0.html
 

Vladimir

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blackkite said:
Hi!
http://www.secretprojects.co.uk/forum/index.php/topic,6081.0.html

Thanks for the link, blackkite!
 

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The Kikka that is at the National Air and Space Museum in Washington, DC emerged a while back from the NASM Silver Hill storage facility and is now visible on the floor of the newish Mary Baker Engen Restoration Hangar at the Udvar-Hazy Center out near Dulles Airport.

Not completely clear, here, as it is slightly obscured by the tip float of a Sikorsky JRS-1 (Only aircraft at NASM that was at Pearl Harbor on Dec 7, 1941) and is also slightly obscured by the Lippisch DM-1 (vertical tail and wingtips removed). Looks like one of the Kikka wing panels is lying close to the right wing leading edge of the DM-1.

Some other interesting aerospace artifacts in the picture as well.

Did not have a good camera with me, so I apologize for the Iphone photos. These were taken Sept 13, 2015.
 

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