1930s

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...

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...

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...

Hi! Competitor Focke-Wulf FW.57. http://www.airwar.ru/enc/fww2/fw57.html

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...

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...

Hi everyone, This thread is about the French tanks designed or contemplated for the new tank program drawn up by the French Inspector of Tanks in December 1939-February 1940, Général Keller. This wartime program was intended to organize development of tanks in control of the infantry branch...

I am going to tread carefully with this one but I think it is worth a look. Instead of the Hitler regime from 1933 Germany is run by a conventional centrist party. The Weimar Republic survives. But its strong willed Chancellors still seek to overturn the restrictions of the Versailles Treaty on...

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

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...

Something about Super-A Cruisers before Maru-5 Project. Source: 早川幸夫，スーパー・クルーザー「超甲巡」覇王伝説，月刊《丸》，2013年5月号 (Monthly "Maru", May 2013). The author stated that in a 1934 document named "Required National Defense Force from Treaty-Break to 1940" (条約決裂後ノ昭和十五年度ニオケル国防所要兵力表), that IJN's original plan...

This book is written by the german Winkler-Researcher Reinhard Sagner. He focuses on the technical asprects of Winkler´s work in and for the Junkers Company in Dessau in the time between 1929 and 1939, when Winkler left Junkers for the Luftfahrtforschungsanstalt Braunschweig. The author has used...

This is an alternative history of Goddard's historical liquid rocket launch of 1926 and the succeeding development of a fictional experimental rocket airplane based on Goddard's designs. The advent of the design and its governmental support ultimately leads to a change in the course of the US...

https://www.bbc.com/travel/article/20220919-the-sunken-steamboats-of-maines-moosehead-lake

Hi all! In one work dedicated to the Spanish Civil War (Euzkadiko Gudontzidia. La Marina de Guerra Auxiliar de Euzkadi (1936-39), Juan Pardo San Gil), information was found regarding the plans of the Basque government to strengthen its armed forces, including the navy. Two interesting projects...

Video might be of interest. Can't speak to its accuracy, but at least it doesn't seem too insane. View: https://www.youtube.com/watch?v=kfio0VHXUmw

I've just read this in the Battleships Axis and Neutral Battleships in World War II book by William H. Garzke and Robert O. Dulin about a proposed modernization of the 2x Espana class battleships. Does anybody know anything more about this project? also

Since the end of the First World War, bold attempts were made in the Soviet Union in the field of rockets and various types of weapons, although timid, but existing and somewhat significant for the hard period that the Union was going through at that time, sometimes typically handcrafted and...

I'm on the scrounge. Does anyone have a copy , or just the key text, of specification R.2/33 that they would be willing to share? Failing that does anyone know whether the text of the specification has been included in any article or book, most likely one about the Sunderland. Thanks