Who wants to make reports about Ho-203 and Ho-204 rounds? @tester188, @KillaKiwi or me?
Go ahead :)
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Since I am very slow at writing reports, could you please write the bug report? 🙂
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Hmm? It says “800 x 1” in the manual though, doesn’t it?
Manual mention only 500kg
tbh it mention only one 250kg bomb but probably it could take more?
Is there any more source about 2 250kg bomb than book where it was mentioned? Because in manual only 1 250kg mentioned. And looking in the bomb racks looks like 2 250kg can’t be fitted because of sizes
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Ah okay, I was looking at this
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I didn’t check this one properly when I made the report. It’s surprisingly detailed. To me it looks like the racks could be too close together to fit two 250kg bombs side by side.
You can copy the 100kg bomb and fit it where the 50kg bomb is. Seems to still fit there.
The next page lists 4x100kg and oddly even 2x250kg.
- 4x50kg
- 4x100kg
- 1x250kg or 2x250kg
- 1x500kg
- 1x800kg This one isn’t in the manual, so it must be something they added later.
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It was mentioned in US document about Kamikaze what was shared in @tester188 report
But I am not sure where from is 2x250 or even 2x500 in some books
Mistake?
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Data from Japanese sources that may be useful for bug reports.
| Caliber | Cannon | Ammo type | Projectile weight | Explosive weight |
|---|---|---|---|---|
| 57 mm | Ho-401 | HE | 1.550 kg | 0.310 kg |
| 40 mm | Ho-301 | HE | 0.570 kg | 0.060 kg |
| 37 mm | Ho-204 | HE | 0.475 kg | 0.045 kg |
| 37 mm | Ho-203 | HE | 0.475 kg | 0.045 kg |
“Weapons and Technology (268) (兵器と技術)” edited by the Japan Association of Defense Industry. September 1969. pp. 37-38
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If I do not mistake current HE filling weight is different so it can be useful for bug reports
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Right now the fillers in game are:
Ho-203 - 35g TNT
Ho-204 - 30g RDX
Only other source I have claims 32g. Quite a difference to 45g.
“The ammunition for the Ho 204 uses the same projectile as the Ho 203 ammunition, but the case is longer.”
Pages before that list two different HE rounds. Could these have 32g and 45g fillers?
By the way that’s the first source where I have seen Ho-401 and Ho-155 HE filler weights.
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I think 2x250kg is just a guess made by authors. If plane can carry 4x100kg, 1x500kg or even 1x800kg bomb, then why not 2x250kg? Well many planes could, but in Ki-102 case, it’s limited by the racks. Even from the photos and manual rack picture, I thought there would be two large bomb racks side by side, but apparently no.
Page 207 from manual. You can see how bomb #1 switch goes to two solenoids, while all the rest go to just one. It’s obviously meant for releasing 250kg, 500kg and 800kg bomb.
I have no idea about those 120kg or 150kg bombs mentioned at the bottom. Never seen such in any Japanese documents.
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No way, a source that straight up says the 57mm shell containted 310g explosive?
I tried to convince Gaijin is was more but without a source they just left it as it is.
And even the 250g on the ground cannon HE is missing a huge junk of explosive since it has a giant detonator, which the Devs won’t acknowledge.
But to be fair the source you provided also only list 250g for the ground cannon HE.
https://community.gaijin.net/issues/p/warthunder/i/YlOfYmOahWh4
Does someone want to make a new report with that source?
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Too late:
https://community.gaijin.net/issues/p/warthunder/i/3IftSUGSlcRh
@tester188 Maybe you can provide a title page for the source? Usually they want that, and I don’t have acess to that source beyond what you provided.
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Is it me or does it say 680m/s for the Ho-5s AP round?
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Maybe some type of container, flare, incendiary or other type of “special bomb” which often has non regular mass
I see. So looks like it shouldn’t has 2 250kg bombs (if another sources won’t be found)
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Report done with what we have. Still we should try to figure more details about those two HE rounds used by Ho-203 and Ho-204. They are close to the same weight. It’s obvious the first one has much larger HE filler, while the latter has far more incendiary mixture in it.
https://community.gaijin.net/issues/p/warthunder/i/PluDQsRYVBYb
“Ordnance Technical Intelligence Report Number 19” lists an Incendiary round only for Ho-204, so I guess that must have been developed later. Should we go with the higher HE filler?
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Here is the cover page.
Spoiler
The cover of the industry journal.
The specifications table for the ammunition was published in an article contributed to an industry journal by a technical officer of the Japanese Army.
Former Director of the 1st Army Technical Research Institute, Retired Major General Koshirō Kuwata, “Overview of Gun and Ammunition Design and Ballistics (8), Reference for Ammunition Design Part 4”
元第一陸軍技術研究所所長 桑田小四郎少将『銃砲と弾薬の設計の概要および弾道(8) 弾薬設計の参考 その4』
@skultew1234, could you please add my source to the existing bug report on the Ho-401 ammo?
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There goes Ho-203 and Ho-204 AP round report as well. Just say if I missed some good source or something important.
https://community.gaijin.net/issues/p/warthunder/i/N4YZBGaji4kP
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Of course.
According to this pages, other rounds should be different? For example Ho-155 ammo now has 30mm HE from Type 5 but here is written 22.5g of HE filler
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