Ki-61-I KAI Tei - 30 mm Interceptor Variant

CherryBlossom

CherryBlossom

English Literature with Film Studies student
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I cannot seem to find anything on this variant and is only mentioned on Wikipedia. Obviously not the most reliable of sources.

I am away from home so don't have any access to my source material, but was wondering if anyone had any information on this variant? Is it experimental?

Look forward to replies

Thanks,

Cherry
 

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Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

Hi!
Ki-61-ⅠKo : 12.7mm gun(Ho-103)×２(fuselage), 7.7mm gun(Type 89)×２(Wing)
Ki-61-ⅠOtsu : 12.7mm gun×２(fuselage),12.7mm gun×２(Wing)
Ki-61-ⅠHei : 12.7mm gun×２(fuselage),20mm cannon(Mauser)×２(Wing)
Ki-61-ⅠTei : 12.7mm gun×２(wing),20mm cannon(HO-5)×２(fuselage)
　　A few Ki-61-ⅠTei had 12.7mm gun×２(fuselage),30mm(Ho-155?) cannon×２(Wing).
Ki-61-Ⅱ : Engine Ha-140(1350hp nominal), Larger wing.Prototype of modified type.
　　Ki-61-Ⅱwith 20mm cannon(HO-5)×２(fuselage),20mm cannon(HO-5)×２(Wing)type was planned.
Modified Ki-61-Ⅱ : Ki-61-Ⅱ with Ki-61-ⅠTei wing, Redesigned tail stabilizer, improved dive performance.
　　A few later production model had a bubble canopy.

Source : FAMOUS AIRPLANES OF THE WORLD No.17 ARMY TYPE 3 FIGHTER "HIEN"

Bubble canopy model.
https://n-wing.sakura.ne.jp/secure/ProductDetail.php?iProduct=13
 

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Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

I checked my Aircam Aviation series and found the following (see pic below). Please note - the Ho-105 mentioned is incorrect. The correct designation is Ho-155 for the army air force 30 mm cannon.
 

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Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

Thanks.
FAMOUS AIRPLANES OF THE WORLD No.17 ARMY TYPE 3 FIGHTER "HIEN" had mistake(page 16). ;)

Kawasaki Heavy Industries restored Hien whcih exhibited in Chiran. Sorry for off topic.
http://car.watch.impress.co.jp/docs/news/1024728.html
 

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Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

Yes I know about that restoration. I actually liked it better in the previous camouflage and 244th Sentai markings. It looks too plain for a Japanese fighter! ;D
 
Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

Thank you for finding this information!

is there anything more known about this variant? Seems little is mentioned on it.
 
Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

Ummm......Very hard. :'(

Please take care that Ki-61-ⅠTei(丁) nose 20mm cannon front end diameter is large.
You can see Ki-61 with skin cooler in the No.5 drawing.

http://kwangaeto.egloos.com/6248897
 

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Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

Hi! Please try automatic translator.
http://www.airwar.ru/weapon/guns/ho155.html

The third picture shows Ki-84 Hayate with Ho-155 cannon?
http://www.asisbiz.com/il2/Ki-84/Nakajima-Ki-84.html
 

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Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

CherryBlossom said:
Thank you for finding this information!

is there anything more known about this variant? Seems little is mentioned on it.
Click to expand...

Only that there were issues with the Ho-155. The drawings of the Ki-84-Ic (Hei) posted by Blackkite show a "Ho-155-II". Maybe that was an attempt to correct whatever problems they had with the original. I would search the web for info on that.
 
Re: Ki-61-I KAI Tei? 12.7mm & 30mm cannon interceptor variant?

So is the Ki-61 with 30 mm's a separate aircraft?

Does it have an official designation or is it just a Ki-61 Tei with field modification?
 
Ummm...........I can't find any answer about this question.
 
At this point it seems to be an a modification of an existing model, whether in the field or the factory. So the model is Ki-61-Id modified or Ki-61-I-KAId as Wikipedia says, KAI of course indicating modified. I would lean to this being a factory installation as the Ho-155 is quite large and I don't know if they could install it in the field, but that is just my opinion.
 
windswords said:
At this point it seems to be an a modification of an existing model, whether in the field or the factory. So the model is Ki-61-Id modified or Ki-61-I-KAId as Wikipedia says, KAI of course indicating modified. I would lean to this being a factory installation as the Ho-155 is quite large and I don't know if they could install it in the field, but that is just my opinion.
Click to expand...

I understand, thanks for your input.

Is there a place where i can learn about the a,b,c,d vs ko, otsu, hei and tei in designating aircraft? Is the a.b.c.d system used by english sources?
 
Please try auto translation. It's difficult for me to explain. :'(
https://ja.wikipedia.org/wiki/%E5%8D%81%E5%B9%B2

甲 こう (ko)
乙 おつ (otsu)
丙 へい (hei)
丁 てい (tei)
戊 ぼ (bo)
己 き (ki)
庚 こう (ko)
辛 しん (shin)
壬 じん (jin)
癸 き (ki)
 
The Japanese terms Ko, Otsu, Hei etc. loosely translate into first, second, third etc. in English. This is what I was told so I could be wrong.

Because we (English speakers) use Roman numerals for the major model numbers (ex. Ki-43 Model 2 is Ki-43-II) using a number to indicate Otsu looks confusing (Ki-43-II2), so a letter is used instead (Ki-43-IIb). None of this is official. The Ki-43-IIb is the Type 1 fighter Model 2 Ostu, but it's a lot quicker for us English speakers to say Ki-43-IIb.

This only applies to army aircraft. The navy used an entirely different system.
 

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