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Junkers/Mitsubishi Ki-20 (Type 92 Heavy Bomber): the Giant


aizenns
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Ki-20  

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Junkers Aircraft and Motor Works / Mitsubishi Heavy Industries

Ki-20 / Type 92 Heavy Bomber

Mitsubishi_Ki-20.jpg

 

Briefly: Japanese TB-3!!

 

History

Mitsubishi Ki-20, designated Type 92 Heavy Bomber is Japanese largest bomber that based Junkers G.38 Airliner.

This was the largest aircraft in Japan, so sometimes this bomber called "Type 92 Super Heavy Bomber". 

This plane was licence production of K-51 (bomber variant of G-38) that modify to equip gunner turret on wing and replace engines. First and second plane using main material and special parts imported from Junkers, and after third plane using materials made in Japan and some parts import.

 

Project of this bomber started in 1928. In required specification is that able to bomb Manila from air base on Taiwan with bomb load 2,000 kg. But it spends long time so it become outdated when rolled out. Because of it this plane build only 6.

 

This plane was too big so landing sequence was very curious. When landing they down bamboo rod that called "blindness-rod" or "landing-rod" from cockpit. This rod have small bells, and just before touch down it touch to land and bells rings. When bells ring captain command to crews to run to tail and pull control ring and it touch down in 3-point state.

 

Pros & Cons

Pros

  • Maximum bomb loads is 5000 kg!
  • Good machine gun armament
  • Will able to use Type 95 1,000 kg bombs

Cons

  • Very slow speed

 

Specification

IlbMGbj.jpg

  • Wing: corrugated metal monocoque
  • Body: corrugated metal monocoque
  • Gear: fixed 2 wheels bogie
  • Crew: total 10
    • Captain: 1
    • Pilot: 2
    • Bombing operator/ front gunner: 1
    • Engineer/ top gunner: 1
    • Radio operator/ top gunner: 1
    • Wing gunner: 4
  • Engine:
    • #1~#4: 4x Type Yu (Junkers) Model 1 water-cooled V12 diesel engine
      • 800 HP
    • #5~#6: 4x Type Yu (Junkers) Model 2 water-cooled horizontally-opposed 12 cylinder diesel engine
      • 720 HP
  • Propeller: Wooden fixed pitch 4 wing propeller
    • Diameter: 4.50 m
  • Width: 44.00 m
  • Length: 23.20 m
  • Height: 7.00 m
  • Wing area: 294.0 m2
  • Own weight: 14,912 kg
  • Loading: 10,536 kg
  • Full load weight: 25,488 kg
  • Wing load: 86.6 kg/m2
  • Power-weight ratio: 7.96 kg/HP
  • Max speed: 200 km/h
  • Armaments
    • Machine Gun: total 3 x 7.7 mm Type 89 twin MG, 2x 7.7 mm Te-1 single MG and 1x 20 mm Type 94 (Oelikon AL)
      • Nose: 1x 7.7 mm twin Type 89
      • Body top: 1x 20 mm single Type 94
      • Both side of wing turret
        • Top: 1x 7.7 mm twin Type 89
        • Bottom: 1x 7.7 mm single Te-1
    • Ammo
      • 7.7 mm: 1,000 per each barrel, total 8,000
      • 20 mm: total 300

Bomb loads

  • Maximum: 5,000 kg
    •                                 36 x 50 kg (wing), total 1,800 kg
    • 8 x 100 kg (body) + 36 x 50 kg (wing), total 2,600 kg
    • 4 x 200 kg (body) + 36 x 50 kg (wing), total 2,600 kg
    • 4 x 250 kg (body) + 36 x 50 kg (wing), total 2,800 kg
    • 4 x 500 kg (body) + 36 x 50 kg (wing), total 3,800 kg
    • 8 x 100 kg (body) + 28 x 100 kg (wing), total 3,600 kg
    • 4 x 200 kg (body) + 28 x 100 kg (wing), total 3,600 kg
    • 4 x 250 kg (body) + 28 x 100 kg (wing), total 3,800 kg
    • 4 x 500 kg (body) + 28 x 100 kg (wing), total 4,800 kg
    • 8 x 100 kg (body) + 12 x 200 kg (wing), total 3,200 kg
    • 8 x 100 kg (body) + 12 x 250 kg (wing), total 3,800 kg
    • 4 x 200 kg (body) + 12 x 200 kg (wing), total 3,200 kg
    • 4 x 250 kg (body) + 12 x 200 kg (wing), total 3,400 kg
    • 4 x 500 kg (body) + 12 x 200 kg (wing), total 4,400 kg
    • 4 x 200 kg (body) + 12 x 250 kg (wing), total 3,800 kg
    • 4 x 250 kg (body) + 12 x 250 kg (wing), total 4,000 kg
    • 4 x 500 kg (body) + 12 x 250 kg (wing), total 5,000 kg
    • 4 x 500 kg (body) + 4 x 500 kg (wing), total 4,000 kg
  • Note
    1. Standard loading of bomb is 2,000 kg, when load over 2,000 kg need to reduce fuel loads.
    2. When load 50 kg and 100 kg, total number of bomb be 44 shells but controller able to drop only 40 times so eight 50 kg bombs need to drop two at same time or reduce four bombs.
    3. Able to load 100 kg bomb and 50 kg bomb in same place.
    4. Able to load 200 kg APHE bombs on place of 250 kg bombs.
    5. Able to load 1000 kg APHE bombs on place of 100 kg bombs.

 

Data of bomb loads provided by @Tasty95215, thank you very much!!

 

Photos

Quote
Spoiler

8s9lNmW.png

Spoiler

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Spoiler

SsSh09P.png

 

Sources

 C01003983200, "Establishment of the standard of the 92-type heavy bombers"

Quote

Nozawa Tadashi (1981) "Encyclopedia of Japanese Aircraft, Vol. 1 (Mitsubishi)", Shuppan-Kyodosha, page 55-57

ISBN: ?

NDL online

Quote

Japan Defense Agency, Training Institute, War History Room (1975) "Senshi Sōsho (EN: War History Series) Vol. 87 "Asagumo newspapers, Page 289 (Appendix 2, Specification sheet of planes of the Japanese Army)

Now published at website of Japan Ministry of Defense, National Institute for Defense Studies: http://www.nids.mod.go.jp/military_history_search/SoshoView?kanno=087#

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  • Senior Suggestion Moderator

Open for discussion. :salute:

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Here's another picture of the Ki-20, courtesy of @ARADO_AKBAR:

 

ki20-6.jpg

 

Also there's information on this aircraft on JACAR file C01003983200, "Establishment of the standard of the 92-type heavy bombers". The possible bomb loads are listed in the chart below, with the 5000kg load being made up of 4 x 500kg bombs and 12 x 250kg bombs:

unknown.png?width=804&height=618

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Something else I should mention is that, if the Ki-20 were to be added in the game, it probably wouldn't get its full 5000 kg bomb load. The  similar TB-3 bomber is also in War Thunder, and could also carry 5000 kg of bombs in real life. However, in War Thunder, the plane can only carry 3000 kg of bombs due to its low BR rating. From the wiki page:

 

Quote

Suspended armament

The TB-3M-17-32 can be outfitted with the following payload options:

  • 24 x 100 kg FAB-100 (2,400 kg total)
  • 12 x 250 kg FAB-250M43 (3,000 kg total)
  • 4 x 250 kg FAB-250M43 + 4 x 500 kg FAB-500 (3,000 kg total)

 

The Ki-20 would most likely also get a low battle rating (having about the same top speed and defensive armament) and a similar bomb load.

Edited by Tasty95215
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  • Technical Moderator
12 hours ago, Tasty95215 said:

 

Also there's information on this aircraft on JACAR file C01003983200, "Establishment of the standard of the 92-type heavy bombers". The possible bomb loads are listed in the chart below, with the 5000kg load being made up of 4 x 500kg bombs and 12 x 250kg bombs:

 

 

Thank you very much! I add data of bombs on OP!

 

By the way, does anyone know about "1,000 kg APHE Bomb"? ("1000瓩破甲爆弾")

 

@*tester188 post article about "Type 95 1,000 kg bomb" but he says it is General purpose HE...

 

Edited by aizenns
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3 hours ago, aizenns said:

@*tester188 post article about "Type 95 1,000 kg bomb" but he says it is General purpose HE...

 

 

The Japanese Army does not use the general purpose bomb classification. The classification is based on the United States definition, not the Japanese classification, and is not very accurate. Focusing on the charge-weight ratio, Type 95 1,000 kg bombs are halfway between GP bombs and SAP bombs. If you decrease the charge weight ratio, the bomb wall gets thicker and it is classified as SAP bomb.

 

Spoiler

bH7fzxB.jpg

 

8uDhfoO.jpg

Weapon data, fire, impact, explosion. Report No. 1o(171), USSBS Index Section 2

http://dl.ndl.go.jp/info:ndljp/pid/8318446/39?itemId=info%3Andljp%2Fpid%2F8318446&contentNo=39&__lang=en

 

It is difficult to translate this term. Translated "Hakō" (破甲) means destroying the armor. "Tekkō" (徹甲) means to penetrate the armor.

Edited by *tester188
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1 hour ago, *tester188 said:

 

The Japanese Army does not use the general purpose bomb classification. The classification is based on the United States definition, not the Japanese classification, and is not very accurate. Focusing on the charge-weight ratio, Type 95 1,000 kg bombs are halfway between GP bombs and SAP bombs. If you decrease the charge weight ratio, the bomb wall gets thicker and it is classified as SAP bomb.

 

Weapon data, fire, impact, explosion. Report No. 1o(171), USSBS Index Section 2

http://dl.ndl.go.jp/info:ndljp/pid/8318446/39?itemId=info%3Andljp%2Fpid%2F8318446&contentNo=39&__lang=en

 

It is difficult to translate this term. Translated "Hakō" (破甲) means destroying the armor. "Tekkō" (徹甲) means to penetrate the armor.

Thank you very much to clarification! So perhaps they call 1,000 kg Type 95 as "破甲爆弾", and Ki-20 able to equip Type 95 bomb?

 

I guess bombs or shells that called 破甲 is similar to German "Betongranate"(ベトン弾) to destroy concrete wall/ ceiling of fortification, and 徹甲 is for penetrate steel armor to destroy inside of tank/ warship.

 

If alignment as English styles 破甲 will be SAP and 徹甲 will be APHE and AP, but it will cause misunderstandings...:dntknw:

 

Edit: 30 minutes works

 

Quote

P0un5IG.png

f6EymZL.png

 

Edited by aizenns
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Japanese TB-3? Hell yeah! +1 :salute:

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  • 1 month later...
  • Suggestion Moderator

+1 Its rarity and slow speed means I cant really see it coming for research. But maybe as an event, premium, or squadron vehicle for sure!

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  • 2 years later...
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  • Senior Suggestion Moderator

Suggestion passed to the developers for consideration.

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