pre-world war ii

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...

I found an interesting chart comparing fuel efficiencies of actual aircraft. Please compare the Ju 86 with petrol and diesel engines. The difference is massive! The source is Shell Aviation News April 1939. Article by some Lufthansa director.

Hello and welcome, This is a hub for all things Kriegsmarine. You will find information, data, and even deductions like this nearly nowhere else - and I take great pride in that. So if you have a question about the Kriegsmarine, are looking for some specific ship or weapon, or even want...

Actually an early example of a signals intelligence mission: View: https://youtu.be/tfTkgT_XvCc

For these cruisers I got most of my data from Norman Friedman's British Cruisers Two World War and After as well as from the forum member Smurf and parts from his book: A Directory of British Cruiser Designs. In case of Friedman's book it wasn't always clear what data was connected to what...

Anyone solve the mystery?? Why, oh why did the JUNKERS G.38 4-engined prototype test-fly with a four-bladed propeller, inboard and a two-bladed propeller, outboard on each wing? All four driving engines were identical. Might this have caused any power imbalance/handling or thrust deficit issues...

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...

Hello there! I've been trying to find data on French aircraft carrier designs between the Joffre and the Clemenceau (PA-54). I've found plenty of data on the PA-28, but I'm very interested in the supposed PA-25 design from Vichy France and the PA-27, PA-29, PA-31 designs from 1945 onwards...

There is already a thread on what might have been in the 1930s. I want to focus on the land forces. Britain and France in 1940 had some tanks (Somua and Matilda 2) which could match the Germans. If the French and British General Staffs had understood the importance of armoured units in a...

What if the United States Army Air Corps was limited to Ford Tri-Motor transports until the onset of World War 2? For the purposes of debate, Bill Stout is allowed to update the basic Ford airframe to 23,000 pound gross weight and up to 725 horsepower per engine, but is still limited to the...

This is a take-off from Anthony Williams "Foresight War." What if you time-travelled back to the 1930s and gained access to the ears of engineers, politicians and generals? What would you suggest? You are not allowed to "predict" World War 2. To keep this thread "alternate" please do not repeat...

Note: I know there already exists a thread about SAAB designations etc but that thread also includes other companies besides SAAB. Link to thread. While i understand why those companies were included i personally think we should have a thread dedicated to each of them separately as they designed...

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...

The Royal Navy's second 16" armed battleships history was a long and bumpy road of large number of designs and the inability on the Admiralty's side to actually start and continue it's work on them or choose a design to produce. First I present the 1938 designs: Design 14A-38 This is the first...

Taiho was ordered as part of Maru 4 fleet expansion program. She was a compromised design, mating an armored flight deck to a Shokaku size hull, resulting in lower freeboard an reduced hangar capacity. The first, prewar, draft of the subsequent Maru 5 plan included 3 more armored carriers of a...

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...

http://3dhistory.de/wordpress/warship-drawings-warship-blue-prints-warship-plans/french-submarine-drawingsplan-sets/french-submarine-surcouf-as-build-1929/ It's the sous marin de croisière type Q5 concept for the Surcouf.

If you read French and you like weird tank projects, the latest issue of GBM Magazine (number 124) has a feature on the various French projects before WWII with multiple sets of tracks. Typically these would be two front tracks and two rear tracks, moving indepedently. The more spectacular are...