1930s

Does anyone know Bohler 47mm L70? In WW2,Bohler 47mm L32 M1935 was famous,but according to some articles,47mm L32 couldn't be used well against tanks in the war,so Bohler designed L55,even...L70 I failed to find its data.

From, Поликарпов У-2, here is a drawings to Polikarpov U-2 and its variants.

A website devoted to tracking as many of the various iterations of the M4 Sherman as can be determined from surviving documentation. http://the.shadock.free.fr/sherman_minutia/index.html

Actually an early example of a signals intelligence mission: View: https://youtu.be/tfTkgT_XvCc

Yes, that Norman Bel Geddes. The yacht mentioned in the reddit post is the Wenner-Gren Yacht design of 1934, with a both a naval yacht and a naval patrol vessel derived from it proposed for the United States Navy in 1939 at the outset of WWII (see JaySea article). View...

View: https://www.youtube.com/watch?v=KjxaJgxXavc Note that this video was made before the current Covid-19 related model making renaissance had really gotten underway.

View: https://www.youtube.com/watch?v=J5G7GbaLkyo I'm not sure if I agree with his conclusions here, especially given that the A13 Covenanter was such a huge disaster.

View: https://www.youtube.com/watch?v=kb5F5s2F3mA

Hi, "Superhansa" Project SA-15 (S8), an interesting swedish development, from http://flygplanshistorik.se/index.htm?s=s2345/s2345_flyget.htm

who can help me with sources who give more information/details of the CC-2000 and CC-3000. concerning these two I found only the information that is has to do with the total power of the engines. please real sources and not he told that he told!!!!! Thanks

So, Austrians had Italian fighters Fiat CR.32 but why they didn't decide to develop their own fighters? Here's the pic of an Austrian CR. 32

Is there a list of all the factories who planned to get to this competition? I can only find some details of the aeroplanes who has been there. Are there any details/materials etc. Concerning the aeroplane projects who not were completed/buil for this competition?

Hai On the Wikipedia site of Pallavicino is mentioned that he worked for some time for Breda. There are two projects mentioned of which I have, until now, nothing found. The projects are the Ba 18 and Ba 35. Concerning the Ba 18 is mentioned on the Breda designations forum that it was possible a...

https://www.popularmechanics.com/technology/infrastructure/a33918204/4468-mallard-history/

Dealing with a pocket battleship threat but with a twist. Instead of one of the great powers assume you have a nation that cannot build its own capital ships, that has to deal with a pair of pocket battleships around 1932. Say for example Goeben proved unrepairable and its guns were used for a...

There is already a thread on what might have been in the 1930s. I want to focus on the land forces. Britain and France in 1940 had some tanks (Somua and Matilda 2) which could match the Germans. If the French and British General Staffs had understood the importance of armoured units in a...

https://www.netherlandsnavy.nl/Special_battlecruiser.htm

Note: I know there already exists a thread about SAAB designations etc but that thread also includes other companies besides SAAB. Link to thread. While i understand why those companies were included i personally think we should have a thread dedicated to each of them separately as they designed...

I am currently researching the history of automatic cannon and their ammunition and would appreciate some help with an obscure German naval AA gun: the 3,7 cm Flak SK C/36. I have put down my thoughts on this almost unknown project as follows: The evidence in favour of its existence is as...

http://www.navweaps.com/Weapons/WTJAP_WWII.php#61_cm_%2824%22%29_F3_%28Experimental%29 Came across this again today while trying to find information on possible use by the JSDF of Mark 32 torpedo tubes (built under licence by Watanabe Iron Works) as shore based torpedo launchers. It's...