interwar period

Recently found this 203mm/96 gun from 1939. Likely a long range siege or test gun. https://archivio.fondazioneansaldo.it/s/1/media/10662 Pressure curve for a 203/96 gun. Massa proietto (shell mass: 102 Kg), Massa carica (charge mass: 100 Kg (NAC idk what it means)). Velocita’ iniziale...

Another beautiful find in the current Mallams Caproni-related auction is these plans of the unbuilt Ca.211, a three-engined high-wing bomber designed by engineer Caratti. The Ca.211 was related to the also unbuilt Ca.204 project, with which it shared the same basic structure. Both were submitted...

The twin-boom Caproni Ca.150 was an attack-fighter ordered in 1936 but subsequently cancelled. The current Caproni auction at Mallams has enabled the emergence of some really interesting material, such as these Ca.150 documents which show two different design iterations (Ca.150 and Ca.150/2)...

Hi people, Recently I was reading David K Brown's work on British naval design ( Nelson to Vanguard: Warship Design and Development 1923-45), and here this description about what he referred to as "B bomb" caught my attention. Unfortunately I could not find much information about it...

View: https://www.youtube.com/watch?v=Sqcc2ActCCU

I found this article, concerning the Vickers PV bomber, and would be interested to know more about it. https://www.keymilitary.com/article/british-behemoth

Between 1919 and 1927 the Air Service's Engineering Division at McCook Field, Dayton, Ohio, was responsible for the solicitation of bids for Army aircraft designs. The Engineering Division released Type Specifications for an aircraft design and then expected the contractors to return a set of...

Ever since the first Zeppelin raids in World War 1 the vulnerability of the civilian population of the UK to attack from the air has been a major factor in shaping our armed forces. The tile "Air Defence of Great Britain" comes from the organisation set up to meet the only air threat imagined in...

In the 30s, the French Air Ministry never launched official competition for High altitude planes. This is mainly due to the fact that the purpose of technical programs was to allocate funding for research, studies, prototypes in some cases, but above all to put manufacturers in competition to...

For anyone with deeper pockets, a collection of drawings, sketches and ephemera by Giovanni Caproni is up for auction at Abdingdon on 12 November. https://www.mallams.co.uk/auction/details/ab-early-flight---the-caproni-collection--the-collectors-sale/?au=565

https://model-copy.info/product_info.php?language=en&products_id=41535 Allegedly, a project from the short lived Far Eastern Republic. I would appreciate anyone who can translate the text.

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...

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