Ho-155 cannon
The 30 mm Ho-155 cannon was a Japanese aircraft autocannon used during World War II, often mistakenly called with the Ho-105 or Ho-151. A lighter and more compact Ho-155-II was designed towards the end of the war.
Ho-155 cannon
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- Ho-155 cannon
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- cannon
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wikidata · Q5873827 · wikipedia · Ho-155 cannon
In this article
Key facts
Key facts
• Name — Ho-155 cannon • Origin — Imperial Japanese army • Type — Aircraft cannon • Is Ranged — yes • Is Uk — yes • Wars — World War II • Weight — Ho-155-I: 50 kg Ho-155-II: 44 kg • Length — Ho-155-I: 1750 mm Ho-155-II: 1510 mm • Part Length — Ho-155-I: 1140 mm Ho-155-II: 980 mm • Cartridge — 30 x 114mm (235 g) • Caliber — 30 mm • Action — Short recoil-operated • Rate — 450-500 rounds/min • Velocity — 715 m/s • Range — 900 m • Feed — Belt
Development
Development
• Illustration — Had the war continued longer the Ho-155-II would most likely have seen service on the jet-powered Karyu Ki-201 The Ho-155-I was first began development in 1942 as a scaled-up and modified version of the 20mm Ho-5 cannon, itself a scaled-up Model 1921 aircraft.50-inch Browning machine gun. In 1943-44 began development of the Ho-155-I and in late 1944 began the development and production of the Ho-155-II for fit into tighter wing bays of fighter planes such as the Ki-84-Ic, Ki-102 and on the project design of the jet-powered Ki-201.
Unknown service
Unknown service
Simultaneously the Ho-155-I and Ho-155-II were produced in Nagoya by the Nagoya Army Arsenal, but as the war was prolonged leading to shortages of materials it is not known how many were eventually produced or how many actually saw service. However it became an example of ingenuity and design from the simple basic design of the Browning machine gun.
Primary material
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reference work
- “Ho-155 cannon”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority record
- Wikidata, structured authority record Q5873827: Ho-155 cannon
General reference · Wikidata
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Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article Ho-155 cannon, revision 1169040244 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
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General reference
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
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