Posts Tagged: blueprints

Development of tankett m/49

These documents from 1949 (I’ve attempted to order them chronologically) describe the early stages of development of tankett m/49, a very cheap and light construction (intended for about 6.5 metric tons) originally envisioned in three versions: one with only machine guns, one with a tank gun (initially 75 mm) and one “special” that could be armed with things like flamethrowers. The development work was contracted to Landsverk (chassis), Bofors (gun) and Volvo (engine and drive train).

Initially the “gun tankette” was armed with the short 75 mm gun used on the strv m/42, but as the project progressed both a 84 mm and a 105 mm gun option were investigated. Eventually the vehicle would enter service as ikv 72, where ikv stands for “infanterikanonvagn”, which translates to something like “infantry gun carriage”.

Archive reference: SE/KrA/0062/D/01/016:H/F I/17 and SE/KrA/0062/D/01/016:H/F I/18

TLP and pvkv fm/48: the story of a cancelled project

This small collection of documents (letters, memos, minutes of meeting and blueprints) tells the short and sad story of the Landsverk TLP, which was to be a 30-ton tank destroyer armed with a 105 mm gun. It lived a very brief life on paper at Landsverk and Bofors for a few short months in 1947, until the army changed its mind and decided it didn’t want AFV’s in that weight class after all. Before cancelling the project entirely, the possibility of improving the protection of the existing pvkv m/43 by angling its armor plates better and potentially upgunning it to 105 mm was investigated (that part of the project was called “pvkv fm/48” by Landsverk), but the conclusion was that the protection would not be improved and the entire thing came to nothing.

Archive reference: SE/KrA/0062/D/01/016:H/F I/13

Minutes of meetings regarding a better gun for strv m/42

Minutes from three 1944 meetings, regarding equipping the strv m/42 with a better gun. The existing 7,5 cm kan m/41 strv has insufficient penetration, and a replacement is clearly necessary considering the tank development seen so far during the war. A 57 mm option is considered, but in the end it is decided to let Bofors fit the 75 mm pvkan m/43 for trials.

This requires a redesigned turret; blueprints for that are attached. These presented my small camera with some problems since they’re huge (they portray the entire tank – 6.2 meters long in reality – at scale 1:5, which means the tank is about 1.2 meters long on the blueprint) so I’ve had to photograph them in parts.

Archive reference: SE/KrA/0062/D/01/016:H/F I/3

Discussion and schematics of autoloaders for Strv A and Strv S

Three documents dated in January and February of 1959, discussing autoloader mechanisms for the two projected tank options of the time, the S-tank and the A-tank (the latter being a turreted tank of conventional design, cancelled at an early stage in favor of the S-tank).

Archive reference: SE/KrA/0266/002/01:H/F I/33