interwar period

Hi everyone, New topic based largely on my research in the French archives, this time on one of the more elusive prototypes of late 30's France: the ARL self-propelled gun, also sometimes called the ARL V 39. Preliminary history: The story of French self-propelled 75mm guns date back at least...

Hello everyone! Despite being a prototype fighter, the Northrop 3A was not successful, and I didn't find much material about it. I think it would be interesting to have a topic about it. The Northrop 3A was powered by an air-cooled, supercharged, 1,535.387-cubic-inch displacement (25.160...

If anyone is seeking copies of Air Ministry Specifications from the inter-war years and finds it tricky to find them in the National Archives and costly to order, then I thoroughly recommend looking to the Library and Archives Canada...

Stefano Sappino's blog has information on these battleship studies: https://stefsap.wordpress.com/2015/10/13/regia-marinas-bb-design-p1-by-general-barberis-navy-corps-of-engineers/ In the post, he says: In his posts, he only provides information about 4 of the Group 3 designs. Does anyone...

Ight so I'll keep this quick, but I was scrolling on navweaps.com and founds something very interesting. Apparently, there was a french 45 CM gun designed in the 1920's. Now, perhaps that may not sound correct but what really made me curious was the article itself. It discussed plans for a...

Hi everyone, Just like my previous threads in the same section, talking about French antitank weapon projects in development in the interwar period or up to 1940 that didn't get to enter service, based on my archive findings. I'm gonna start with the ones that caught me completetely off-guard...

MAK-10 was made by a russian aviator designer who moved to France. This plane have many designideas influenced by typical typical russian designs of the earlyer times. But had a very unique style anyway. It doesnt have a very wide body, rather a bit thin one vs. the length. That gave some...

the richelieu hybrid: https://www.laroyale-modelisme.net/t20387-jean-bart-hybride-1-400 (in french)

Does anyone have: - general plans and armor scheme of the Eendrachts. For the armor, the correct figures seems to be 100mm belt of unknown height and length closed by 60mm traverses at the end barbettes, with 75mm armor extending beyond the citadel on the sides for an unknown distance, topped by...

View: https://www.youtube.com/watch?v=cQZgi1O1Vb4 Some background on decoy airfields: https://www.aviationmuseum.net/AirfieldDecoys.htm

Looking for more information or positive identification of the pictured aircraft. Possibly Huff Daland Type IX Coastal Observation aircraft? May be a 3-view or proposal description out there.(Note: Vertical stabilizer appears to be missing. the lines on the horizontal stabilizer looks as though...

Hi I don't know if anyone will be able to help me, but I live in hope. For Specification F.29/27, the Westland COW Gun Fighter and the Vickers Type 161 are well documented in both text and pictorial form. However the third entrant to the specification, the Bristol Type 112 seems to be bereft of...

The Invention Of The Jet Engine: Hans Von Ohain, One Of The Fathers Of the Turbojet

The Hermann Oberth Raumfahrt Museum has acquired a file of documents containing photographs, newspaper clippings and comments from Karl Otto Engelbert Poggensee (born December 3, 1903 in Bremen) student of Hinderburg-Polytechnikum, Oldenburg, covering the essays that it carried out between 1930...

View: https://www.youtube.com/watch?v=_j544ELauus

Société Dyle et Bacalan - 1924-1929 In 1924, shipbuilders Société de Travaux Dyle et Bacalan of Bordeaux established an aeronautical division to design and build aircraft of all-metal construction. This shipbuilding firm went bankrupt in 1928 and was bought by the Ateliers et Chantiers...

Andrés López (from "Proyectos y prototipos españoles" on facebook) talked in 2018 about a painting in the maritime museum of barcelona in which an unidentified battleship or battlecruiser is portrayed. He said this: "No hay ningún dato sobre sus características ni fecha. Es más, si uno repasa...

I visited the polish aviation museum in krakow yesterday and I saw the only surviving argus as 5 engine. There It said that there were plans to install the engine in a giant plane, but this project was canceled. Are there any info or/and drawings of that plane? Thanks in advance

The Navweps site on these two guns has some passing mentions that lead me to other questions: -135 mm/45 (5.3") Models 1937 and 1938: There is this statement: "A twin AA version for the Etna class cruisers and for the rebuild of the damaged battleship Conte Di Cavour were only in the...

i did a quick search of this site for the above mentioned vehicle and found nothing so if there is a preexisting topic i am sorry for failing to discover its thread i was looking for any info and/ or pics about this vehicle or these vehicles ( i know of the DP-2 ( the one which almost...