Jump to content
Sturgeon's House

Waffentrager

Contributing Members
  • Content count

    147
  • Joined

  • Last visited

About Waffentrager

  • Rank
    Advanced Member
  • Birthday 12/28/1993

Profile Information

  • Gender
    Female
  • Location
    USA/Korea

Recent Profile Visitors

567 profile views
  1. WoT v WT effort-thread

    Yeah, Gaijin didnt utilize the blueprints I gave them as well as Wargaming did when Daigensui lent it to them. I'm getting it fixed, however.
  2. WoT v WT effort-thread

    ST-A1 Devblog: https://warthunder.com/en/news/4334-development-st-a1-stepping-into-a-new-era-en/ My Tank article: http://sensha-manual.blogspot.com/2016/11/wt-st-a1.html My History Article: http://sensha-manual.blogspot.com/2016/10/fresh-start-new-beginnings.html
  3. WoT v WT effort-thread

    Type3 Chi-Nu. Devblog: https://warthunder.com/en/news/4335-development-type-3-chi-nu-last-line-of-defense-en/ My article: http://sensha-manual.blogspot.com/2016/11/wt-type3-chi-nu.html
  4. The Japanese Ferdinand

    Japanese tank destroyers are split between assault guns and gun tanks. Ones of popular mention are the Na-To series (30 produced). The others are mainly assault guns using the chi ha chassis and the alike. There is also the Ka-To. Which like the Ho-Ri is the project based off the new doctrine. Instead of Chi-Ri it uses Chi-To chassis as the base. Only one prototype, never made it to production numbers.
  5. The Japanese Ferdinand

    Yes. The files say maximum armour thickness at the front is a 120mm plate. How successful they were at it is up for wild guesses.
  6. The Japanese Ferdinand

    There are more tank destroyers all together. But yes, 3 models of both Ho-Ri and Ho-Ni.
  7. The Japanese Ferdinand

    Not quite. The tank never used the German designs as influence. The title is simply out of the resemblance of the two vehicles. As far as using the same doctrine as the Germand and Soviets goes, it was purely a purpose motive. Not a design approach.
  8. The Japanese Ferdinand

    Even when corrected seems to keep placing a colon there on its own.
  9. The Japanese Ferdinand

    Disclaimer: Yeah naturally Japanese tanks arent a big focus here, so I usually ignore posting things of the matter here. But like the O-I article I posted here oh so long ago, this article comes with the results of some days spent in the archive reading and (continuing to do) translating pages of reports that havent been read in like, decades. So with that said, hope you enjoy. Still a matter I'm unfinished diving into. --------- Type5 Ho-Ri : The Japanese Ferdinand As of recently, I've gone through the Japanese National Archive files, looking through to find documents that relate to my studies. While I was there, I stumbled across something that caught my interest. Of said documents, the one of most importance was a file called "Military Secrets No.1". The reports were held by the Ministry of Defense, Army records section, Munitions Mobilization district. Contained in these files were a 3-page production chart of late war tracked vehicles of the Japanese army. Located within the chart I found a number besides the Type 5 Ho-Ri tank destroyer. A vehicle that until recently was only known to have made it to wooden mockup stages. In this lengthy article I will cover my findings on the tank project. Unfortunately visual representations of the tank are still being looked at. So I will use existing found sources for this. National Institute for Defense Studies " Military secret No.1 " In September of 1942, the Japanese Army Staff came to the realization that they had no choice but to design a series of tanks to compete with the arrival of the American Sherman tank. Three concepts were proposed by the Staff, each with their own gun selection; Kou (47mm), Otsu (57mm), and Hei (75mm). As combat data filtered back to Japanese high command, the model Kou concept would later merge with Otsu concept, becoming the basis for the design of the Type4 Chi-To. The Hei proposal would eventually lead to the development of the Type5 Chi-Ri. Additional impetus for new development projects came from a change in the Weapons Administration Headquarters Research Policy in July 1943, a change which was made as a result of analyzing and examining the situation of the tank warfare between the German army and the Soviet Union. Through analysis of this data, the Army's tank doctrine shifted to an emphasis on developing tanks which prioritized the anti-armor mission instead of prioritizing infantry support with limited anti-tank capability. Upon the promulgation of this policy, the Japanese Army decided to develop a series of tank destroyers alongside the medium tanks being designed. As a result, the Type5 Chi-Ri, Japan’s primary medium-tank project, would become the basis for a new anti-armor vehicle. This was a natural choice for IJA command; the Chi-Ri project was more mature. Additionally, it held the most advanced technology Japan produced at the time, technology which would become ubiquitous in the designs that would be made until Japan's defeat in 1945. Testing model of Chi-Ri. Used to trial the series of cannons and turrets designed for the tank. In the photograph it is captured by US forces after the gun had been dismantled for further trials. By Japan's defeat in 1945, three models of Chi-Ri entered production. The tank destroyer built upon the chassis of the Chi-Ri would eventually be called the Ho-Ri. Development of this vehicle began shortly after the development of the Chi-Ri, when it had been decided that the tank would use the coil spring suspension system that Japanese manufacturers were already familiar with. After this decision was made, the Army also began work on designing the tank destroyer’s superstructure and casemate. The first design the Army came up with mimicked the Chi-Ri chassis entirely, though the turret was replaced with a reinforced rear-mounted superstructure. The Experimental 10cm Cannon With the development of a new series of tank destroyers taking place, the Army decided to design and produce a new high capacity anti-tank gun to fit the role. On July 22 of 1943, the Army Military Customs Council began designing a 105mm caliber anti-tank gun. Once the design of the cannon had been completed, construction of the cannon took place around a steel shielding that was to be the Ho-Ri's superstructure plating. The trial placement was capable of traversing 10 degrees to the left and the right, elevating by 20 degrees, and depressing by 15. The gun weighed 4.7 tons, with a barrel length of 5.759 m. During one of the first council meetings that took place on the 30th of June, however, the council gave Major Ota and Lieutenant Colonel Neima of the Army Weapons Administrative Division, the two chief engineers of the Experimental 10cm project, the task of achieving the requirement that the gun meet 200mm penetration at 600 meters distance and 1000m/s velocity. Naturally, the tank gun was not capable of this, and, instead, the Experimental 10cm had a muzzle velocity of 915m/s with AP (900m/s with HE), and achieved a performance of 150mm penetration at a distance of 1000 meters. The 10cm Experimental Anti Tank gun relied on a system similar to the Type5 75mm Anti tank cannon in relying on an autoloading mechanism for the tank. This mechanism was known as a semi-automatic loading system, different to the ordinary "autoloader" you see in other vehicles. Unlike the typical autoloading system, the loading crew of the gun system placed the individual shells on the chamber, the system automatically ramming the shell into the breech and forwarding to operation. This gave the effect of automating half the loading routine, as the name suggests. The Experimental 10cm was put into service with the Ho-Ri in 1945. The technical name for the model to be used on the prospective production model was known as the Type5 10cm anti tank cannon. The shell rammer used a horizontal chain closing type, and the automatic loading machine was attached to the back of the gun. It was used because loading ammunition of 123 cm total length and 30 kg weight was deemed too strenuous on a small Japanese physique. Various artillery parts had been diverted and referred to in order to shorten the time of development. The autoloading machine adopted the mechanism of the Type3 12 cm AA Gun for inspiration. The automatic loading mechanism was a continual source of problems, but was repeatedly refurbished to eliminate the drawbacks. Photograph of the Experimental 10cm Anti tank cannon during trials. Note: The shielf and protector are used on Ho-Ri prototype. Gun was first tested separately and then placed in tank prototype. Ho-Ri Designs Originally, the Ho-Ri was to keep the secondary 37mm that had been mounted on the Chi-Ri design. The reason for this addition was due to the limited gun-traverse on casemate tank destroyers. Additionally, the primary cannon could only do so much for itself. Hence, to combat many anti tank threats which the Americans could have dedicated to the assault on Japan, the 37mm was seen as being an efficient method of providing additional firepower against infantry and combat vehicles. To this end, the 37mm gun offered a range of APHE and smoke shells. The 37mm was capable of an elevation of 20 degrees and depression of -15 degrees. The mount itself also offered a horizontal traverse of 20 degrees. The 37mm gun could also be used as a ranging device for the main cannon, however this most likely would not have been needed due to the high velocity of the main gun. Outline of the Ho-Ri design I. Technically entered modified construction of one of the 3 Chi-Ri units. The development of the Ho-Ri design was split into two concepts. One being a rear mounted superstructure on the Chi-Ri chassis with a central stationed engine, and the other having a centralized superstructure with a rear engine placement. The Ho-Ri engine selection was different from the traditional diesel that the Army had kept with for most of their tank production. Japan used a BMW designed gasoline V12 aircraft engine . The main reason for this change was due to industrial capacity of Japan reaching its peak, aircraft development was still a heavy priority and many assets were available for useage. The output of the tank was 550hp/1500rpm. The Ho-Ri II’s design also enabled the option of adding a 20mm AA station on the rear hatch for additional protection. However, the likelihood of it being useful is up for debate. In addition, central placement of the superstructure enabled 60 rounds for the main cannon to be stored instead of the Ho-Ri I’s 40 rounds. In terms of armour, both vehicles were to keep the Chi-Ri hull, hence the maximum frontal armour of these tanks was only 75mm. On the superstructure, however, armor thickness was increased to 100mm. By the time both designs, which had been developed in parallel, were presented to Army General Staff it was too late; the war was almost over, and the thickness of the armor was no longer sufficient against US armaments. Nevertheless, the design showed promise. Thus, while neither design was chosen for production, the Ho-Ri I was adopted as the main influence for the third revision of the tank. This third vehicle is commonly labeled as Ho-Ri III. Technically, however, none of the Ho-Ri vehicles were numerically designated. Ho-Ri III wooden mockup. Ho-Ri III took the basis of the Ho-Ri I, and revamped it to fit the needs of the military. The frontal plate of the tank was sloped at a 70 degree angle and increased to 120mm thickness. In this configuration, the tank was capable of withstanding most anti tank measures the Unites States could bring to the home islands of Japan. The designers of the tank built a wooden mockup form of the revision 3 design and presented it to the general staff, at an unknown date. The Ho-Ri kept its general composition the same as the prior designs, but this change was what the Army Staff ultimately decided to go with and schedule the Ho-Ri for prototype construction. The tank would have a crew total of 6; driver, gunner, two loaders, radio operator, and commander. The past designs made use of the 37mm that the Chi-Ri hull had present, however, with the chosen slope change on the Ho-Ri III, this was no longer present and a crew member spot was open. The 6th crew member was placed as the second loader to assist with the autoloading mechanism and provide shells for the primary loader. The construction of the prototype was completed in 1944. The tank achieved a speed of 40kmh during the trials. The tests were seen as a success, resulting in the Army ordering 5 units of the tank. The tank was put in service as the Type5 Ho-Ri, as the production model started in 1945. However, by the time of the war's end, the series of tanks only made it to 50% completion. Only one operable prototype had been completed fully. Reports of the trial are still being processed at this time [11/15/16]. My research continues. I have been spending days now trying to go through everything and get the details of the tank out to the light. Once all the documents are collected together and organized, translated, and put back together I will write a follow up article to this. You can view full post with all images on my blog post: http://sensha-manual.blogspot.com/2016/11/type5-ho-ri-japanese-ferdinand.html
  10. WoT v WT effort-thread

    They would have sufficed against the M4 used in the Pacific. But they were only produced in a unit capacity of specifically 166. And in the end the US would have fielded enough recourses to easily remove the tank threat. Only 280 tanks of new tech were committed by 1945.
  11. WoT v WT effort-thread

    With industrial capacity in Japan being so scarce, most tanks pre-war were forced to continue service until the end. Many designs were made throughout the war to improve the situation but naturally none of them could be accepted with a Government staff that preferred the Navy's upgrades rather than the Army's proposals. Only until the Navy started to crumble did the Army get the resources to produce what they wanted, IE Chi-Nu and etc. But by that time they themselves were borderline competitive and too few to be used outside Japan.
  12. Well, personally I never watched American media. Their entire election cycle was too cringy for me to handle. I used the outlets Im used to (IE In Korea Trump has an approval rating of like 9-10%) and thats how my opinion for him formed. Not like its really my issue too much. I'm only present in US semi annually so hopefully his policies dont affect me.
  13. Is it wrong for me to like, kind of favor trump after seeing him once he has won? Stockholm syndrome much?
  14. WoT v WT effort-thread

    Type97 Chi-Ha article: http://sensha-manual.blogspot.com/2016/11/wt-type97-chi-ha.html Devblog post: https://warthunder.com/en/news/4330-development-type-97-chi-ha-hope-of-the-army-en/ Type2 Ka-Mi Article: http://sensha-manual.blogspot.com/2016/11/wt-type2-ka-mi.html Devblog post: https://warthunder.com/en/news/4328-development-type-2-ka-mi-beach-patrol-en/
×