1920s

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...

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...

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...

Does anyone know about this? This was in a Japanese magazine as a "US Navy Aviation Battleship". According to the magazine, this was studied by the US Navy in October 1924 and was inspired by a proposal for a British "Hybrid battleship" published in Brassey's Naval Annual in 1923. General...

Germany: - 3,7cm TAK gun: https://tanks-encyclopedia.com/ww1/germany/3-7cm-tankabwehrkanone-rheinmetall?amp - 28cm Krupp haubitze L/14 i.R., 1912-1913 https://en.wikipedia.org/wiki/28_cm_Haubitze_L/14_i.R. - 28cm Erhardt haubitze L/12, 1912-1913 - 9cm Rheinmetall kanonenhaubitze L/31, 1917-1918...

This is the last of the post-Washington Treaty designed carriers covered in the 1st volume of USN 'Springstyle' design books. It's a small 10,000 ton Aircraft Carrier that looks like a 'regularized' version of the USS Langley (CV-1) conversion. Of note is that the armament is purely anti-surface...

Hey everyone, came across these pictures on an old German newspaper about WW1. Lets use this thread to aggregate all information about early armoured cars. - Coutin PS: Does anyone recognize the American models?

Re: Australia and the WNT - please see link below; https://www.navy.gov.au/history/feature-histories/loss-more-symbolic-material According to the Author, the government of Australia (if it chose) could likely have won excemption and retained HMAS Australia as an “Armoured Cruiser”. As others...

View: https://www.reddit.com/r/WeirdWings/comments/ll3dyh/blackburn_were_not_known_for_designing_pretty/ https://www.baesystems.com/en/heritage/blackburn-sidecar

Does anyone know anything more about this? https://collections.rmg.co.uk/collections/objects/568598.html Description Scale 1:192. A plan showing the outboard profile and arrangement of rig of a proposed aircraft carrier/liner hybrid by Eustace H. T. D'Eyncourt [Director of Naval...

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

Not long ago I've finished drawing the various Amagi/Akagi carrier designs I've found in the Hiraga archive. So I post them here now: Amagi Aircraft Carrier Preliminary Design 1 https://www.deviantart.com/tzoli/art/Amagi-Aircraft-Carrier-Preliminary-Design-1-827366018 This is something...

Indeed, despite the Admiralty’s efforts to ridicule Trenchard’s claims, they were very worried about what the torpedo-bomber might mean for the future of their capital ships. During the 1920s they would go to great lengths to improve air defence, including, with the Hornet programme, an attempt...

New book available which may be of tangential interest to SPF members. Automotive history is filled with concepts which never left the drawing board, with early streamlined projects being among the more fascinating. This book presents ten of the most striking and unusual aerodynamic automobile...

Hi, the Swedish company Svenska Aero Aktiebolaget was formed in 1921 to build some Heinkel aircraft and its own designs,in 1931 liquidated and taken over by the Svenska Järnvägsverkstäderna,AB,and in 1939 the company merged with Svensak Aeroplan AB to create SAAB. Heinkel HE 1...

Hi, here is a US transatlantic flying boat project,it had a tandem three wing,it appeared in Aero Digest,maybe in 1926,but it was familiar to me,do we make a discussing about it before ...

I've recently found this pretty interesting Japanese Project at the Hiraga Archive. It looks like a hybrid cruiser-carrier warship from 1920's era. There seems to be a few variants mostly by how large the hanger should be and where to locate the conning tower and AA guns. Apart from the unique...

I've found calculations for a 10.000ton cruiser in the Hiraga archives. What is unique about this vessel that it would carry 4 triple 20cm heavily armoured gun turrets, though calculations shows quad turrets were considered as well, but it is unknown if it would carry the same number of such...

Hi, during 1924,Randolph F. Hall designed a three different monoplane aircraft patents for the Thomas-Morse company. http://scripophily.net/airdesbyranh.html

Hi, the Lithuanian designer Dobkeviciaus designed Type I as a single seat touring aircraft, and developed it into Type III,as a single seat fighter; http://gallica.bnf.fr/ark:/12148/bpt6k6556089d/f2.image http://www.secretprojects.co.uk/forum/index.php/topic,6943.msg59364.html#msg59364