late 1930s

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...

Starting point Juan de la Cierva had already decided to continue his work motorizing the gyroplane's rotor. He misses his flight at Croydon which crashes in December 1936 because his car has a flat tire. He travels on the next flight, meets with Focke, and together they design and develop two...

Just realized that i have never seen any drawings of interim projects that eventually led to the G-50/F6F. There was an G-33 based on the XF4F-2 but with R-2600 engine, and as i understand initial G-50 projects had still much in common with the F4F (mid-wing, fuselage landing gear etc.). Are...

The C-35 and the C-36 are well known, actually built, aircraft of "Eidgenössische Konstruktionswerkstätte" in Thun. The planned C-37 is rather less known. Last year I had the chance to re-work an 1978-article of "Cockpit" and I was lucky to get to see a painting of Roland Eichenberger -...

(h/t cattalonX) https://forum.worldofwarships.eu/topic/5987-spanish-heavy-cruiser-project-138/

Seen here ...

I've seen a few references to a Supermarine early World War II project called the Type 312. From what I've read, it was a derivative of the Spitfire but with standard cannon armament and a ventral radiator instead of the Spitfire's underwing radiators. Does any photos or plans or other details...

Published in "Техника Молодёжи-Youth Technique" from 1936 the picture shows a fuel supply in flight. The caption to the picture says "The fuel truck (aircraft tanker) flew 30 meters above us and slightly ahead. Suddenly, a hatch opened in the lower part of it, from which a thick hose descended"...

I'm starting a new thread so that it doesn't hijack @airman's Do-19 evolution thread. Is the following feasible, plausible and reasonable? In this timeline the Do 19 and Ju 89 weren't cancelled on 29th April 1937. The Do 19 V3 and Ju 89 V3 prototypes were completed. 12 Do 19A-0 and as Ju 89A-0...

Freshly published:

From, Самолеты С. А. Лавочкина.

A design by Vladimir Gartvig, drawing by Vladimir Meshcherin. Images OSGA-25 1-4 from Russisches Design - Tradition und Experiment 1920-1990 by Alexander Lavrentiev and Yuri Nasarow, Ernst & Sohn 1995. Images OSGA-25 5-7 found here: https://gashetka.tumblr.com/ View...

Grigorii Ivanovich Bakshayev was interested in the concept of variable geometry aircraft, where the size and/or shape of wings are altered according to the stage of flight, or desired characteristics. There are many methods of achieving this but one of the simplest is the telescopic wing, where...

A big Surprise, here is a drawing and all Info about Bellanca C-24-100-P and C-24-100-M,generally it was a single or two-seat fighter,observation,light bomber and attack airplane Project,developed from Model 28-90. I don't know for which competition it was purposed,and if it was estimated to...

The British Air Ministry created a designation system for the installations of radio equipment in the late 1930s, each number reflected the standardised installation of a particular radio transmitter or receiver and all the various elements including power units, aerial connections, and control...

Hi, here is an idea for suicide fighter Project of 1939,displayed by British military magazine "The R.A.F., Quaterly,that as I translate by google,did we talk about it before ?. Ailes 1939

Hi, looking for something else I found some references to the "Żywe torpedy" (Living Torpedoes, i.e. Human Torpedoes), an idea of Polish military to create a suicide unit in 1939 to attack the ships of the Kriegsmarine. The project is briefly mentioned in Covert Shore here, with a couple of...

Hello everyone. Today I wanted to share one of Japan's heavy tanks, the Aichi 96. Designed sometime after the Type95 heavy tank, Japan delved into producing new tanks in an attempt to fielding them across China. Multiple companies are listed to have taken part. This tank had at least unit built...

Hi! Arsenal VG-30 variants. https://en.wikipedia.org/wiki/Arsenal_VG-33 "The Arsenal VG-33 was one of a series of fast French light fighter aircraft under development at the start of World War II, but which matured too late to see extensive service in the French Air Force during the Battle of...