Difference between revisions of "Ho-155 (30 mm)"
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<!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' --> | <!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' --> | ||
| − | * '''Default:''' | + | * '''Default:''' {{Annotation|HEF|High-explosive fragmentation}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|HEF-I|High-explosive fragmentation incendiary}} |
| − | * '''Universal:''' {{Annotation|HEF- | + | * '''Universal:''' {{Annotation|HEF-I|High-explosive fragmentation incendiary}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|HEF|High-explosive fragmentation}}{{-}}{{Annotation|HEF|High-explosive fragmentation}} |
| − | * '''Ground targets:''' {{Annotation| | + | * '''Ground targets:''' {{Annotation|HEF-I|High-explosive fragmentation incendiary}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}}{{-}}{{Annotation|AP-T|Armour-piercing tracer}} |
| − | * '''Tracers:''' {{Annotation| | + | * '''Tracers:''' {{Annotation|AP-T|Armour-piercing tracer}} |
| − | * '''Stealth:''' {{Annotation|HEF|High-explosive fragmentation | + | * '''Stealth:''' {{Annotation|HEF|High-explosive fragmentation}} |
| − | { | + | {{:{{PAGENAME}}/Ammunition|HEF-I, AP-T, HEF}} |
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=== Comparison with analogues === | === Comparison with analogues === | ||
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'''Pros:''' | '''Pros:''' | ||
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* | * | ||
'''Cons:''' | '''Cons:''' | ||
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* | * | ||
== History == | == History == | ||
| − | ''Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.'' | + | <!-- ''Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>.'' --> |
| + | By early 1942, the Imperial Japanese Army Air Service recognized that their newly introduced [[Ki-43 (Family)|Ki-43]] fighter aircraft lacked the firepower needed to engage enemy aircraft with only two [[Ho-103 (12.7 mm)]] machine guns to use. Nakajima's replacement design, the [[Ki-84 ko]] increased the firepower by supplementing the Ho-103 with 2 [[Ho-5 (20 mm)]] cannons. However, the same year, the Third Army Aerotechnical Laboratory at Tachikawa, under the leadership of Chuo Kogyo K. K., developed a 25x155 mm variant of the Ho-5 to replace it. Designated the Ho-51, this gun was intended to fit in the same mounts of the Ho-5 it was intended to replace, but in early 1943, the decision was made to scale the design up to fire a 30x115 mm shell that held 2.25 times the explosive power of a Ho-5 shell. Unusually for a recoil-operation design, the Ho-155 prototype had both the "ice cream cone" muzzle break of the Ho-5 and a forward extension to support the heavier barrel, while still keeping the same receiver as the Ho-51. However, the weight and reliability issues from the recycled receiver made it a undesirable replacement for the Ho-5, so the Nagoya Army Arsenal went to work making the gun a feasible replacement. From 1943-1944, Nagoya made the Ho-155-I prototype which could successfully handle the 30 mm cartridge but was once again too large for aircraft. By 1945, they had their second prototype, the Ho-155-II which was capable of fitting into the wing bays of the Ki-84 and was tested. The Ho-155 was also planned for the [[Ki-102 otsu]] and the Ki-201 fighter jet, the latter of which never left the drawing board. Whether the Ho-155 ever saw service is unknown, but it is unlikely given the state of Japanese industry thanks to the Allies' strategic bombing campaign. | ||
== Media == | == Media == | ||
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''Paste links to sources and external resources, such as:'' | ''Paste links to sources and external resources, such as:'' | ||
* ''topic on the official game forum;'' | * ''topic on the official game forum;'' | ||
| − | |||
* ''other literature.'' | * ''other literature.'' | ||
Latest revision as of 19:37, 14 March 2024
Contents
Description
Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.
Vehicles equipped with this weapon
General info
Tell us about the tactical and technical characteristics of the cannon or machine gun.
Available ammunition
- Default: HEF · AP-T · HEF-I
- Universal: HEF-I · AP-T · AP-T · HEF · HEF
- Ground targets: HEF-I · AP-T · AP-T · AP-T · AP-T
- Tracers: AP-T
- Stealth: HEF
| Penetration statistics | |||||||
|---|---|---|---|---|---|---|---|
| Ammunition | Penetration @ 0° Angle of Attack (mm) | ||||||
| 10 m | 100 m | 500 m | 1,000 m | 1,500 m | 2,000 m | ||
| HEF-I | 3 | 3 | 3 | 3 | 3 | 3 | |
| AP-T | 28 | 26 | 18 | 11 | 7 | 5 | |
| HEF | 3 | 3 | 3 | 3 | 3 | 3 | |
| Shell details | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ammunition | Velocity (m/s) |
Projectile mass (kg) |
Fuse delay (m) |
Fuse sensitivity (mm) |
Explosive mass (TNT equivalent) (g) |
Ricochet | ||||||
| 0% | 50% | 100% | ||||||||||
| HEF-I | 700 | 0.24 | 0.2 | 0.3 | 27.5 | 79° | 80° | 81° | ||||
| AP-T | 700 | 0.24 | - | - | - | 47° | 60° | 65° | ||||
| HEF | 700 | 0.24 | 0.2 | 0.8 | 47.19 | 79° | 80° | 81° | ||||
Comparison with analogues
Give a comparative description of cannons/machine guns that have firepower equal to this weapon.
Usage in battles
Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.
Pros and cons
Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.
Pros:
Cons:
History
By early 1942, the Imperial Japanese Army Air Service recognized that their newly introduced Ki-43 fighter aircraft lacked the firepower needed to engage enemy aircraft with only two Ho-103 (12.7 mm) machine guns to use. Nakajima's replacement design, the Ki-84 ko increased the firepower by supplementing the Ho-103 with 2 Ho-5 (20 mm) cannons. However, the same year, the Third Army Aerotechnical Laboratory at Tachikawa, under the leadership of Chuo Kogyo K. K., developed a 25x155 mm variant of the Ho-5 to replace it. Designated the Ho-51, this gun was intended to fit in the same mounts of the Ho-5 it was intended to replace, but in early 1943, the decision was made to scale the design up to fire a 30x115 mm shell that held 2.25 times the explosive power of a Ho-5 shell. Unusually for a recoil-operation design, the Ho-155 prototype had both the "ice cream cone" muzzle break of the Ho-5 and a forward extension to support the heavier barrel, while still keeping the same receiver as the Ho-51. However, the weight and reliability issues from the recycled receiver made it a undesirable replacement for the Ho-5, so the Nagoya Army Arsenal went to work making the gun a feasible replacement. From 1943-1944, Nagoya made the Ho-155-I prototype which could successfully handle the 30 mm cartridge but was once again too large for aircraft. By 1945, they had their second prototype, the Ho-155-II which was capable of fitting into the wing bays of the Ki-84 and was tested. The Ho-155 was also planned for the Ki-102 otsu and the Ki-201 fighter jet, the latter of which never left the drawing board. Whether the Ho-155 ever saw service is unknown, but it is unlikely given the state of Japanese industry thanks to the Allies' strategic bombing campaign.
Media
Excellent additions to the article would be video guides, screenshots from the game, and photos.
See also
Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:
- reference to the article about the variant of the cannon/machine gun;
- references to approximate analogues by other nations and research trees.
External links
Paste links to sources and external resources, such as:
- topic on the official game forum;
- other literature.
| Japan aircraft cannons | |
|---|---|
| 20 mm | Ho-1 · Ho-3 · Ho-5 · Type 99 Model 1 · Type 99 Model 2 |
| 30 mm | Ho-155 · Type 5 |
| 37 mm | Ho-203 · Ho-204 · Type 94 |
| 40 mm | Ho-301 |
| 57 mm | Ho-401 |
| 75 mm | Type 88 |
| Foreign: | |
| 20 mm | M39A3 (USA) · M61A1 (USA) · M197 (USA) · MG FF (Germany) · MG FF/M (Germany) · MG 151 (Germany) |
| 30 mm | GAU-13/A (USA) · M230E-1 (USA) |
