SCR-270/SCR-271 Radar

February 23, 2019 PE Matt 0

Following the May 1937 tests of the SCR-268 searchlight-control radar, the US Army expressed an interest in obtaining an early warning air search radar with much longer range. A US Army Signal Corps Laboratories team, […]

3-inch M3 Anti-Aircraft Gun

December 1, 2017 PE Matt 0

The 3-inch M3 gun was the primary anti-aircraft weapon of the US Army and Marines at the beginning of World War II. Its origins lay in the first anti-aircraft gun produced by the United States […]

SCR-268 Radar

November 29, 2017 PE Matt 0

The US Army Signal Corps was increasingly interested in radar during the late 1930s. This new technology offered to solve a number of problems, including simplifying the problem of finding enemy aircraft and directing searchlights […]

ASE-equipped PBY Catalina

ASV Mark II / ASE Radar

October 26, 2017 PE Matt 0

Dr Edward Bowen, leading the airborne radar group of the Royal Aircraft Establishment in Britain, started a project to improve on the ASV (for “air to surface vessel”) Mark I radar, which had been hastily […]

List of Japanese Submarine Reconnaissance Missions

October 7, 2017 PE Matt 0

During the Pacific War,  Japanese submarines carried out dozens of reconnaissance missions by flying off small seaplanes. These aircraft were stored within water-tight compartments in the vessel’s hull, before being assembled on deck and catapulted […]

CXAM Air Search Radar

March 24, 2017 PE Matt 0

During the early 1920s many radio operators had noticed unusual phenomena when large metal objects like ships or aircraft passed between a radio transmitter and receiver. Gradually scientists realised that this was due to radio […]

Japanese Shisaku Seizo Designations

February 24, 2016 PE Matt 0

From 1931, new experimental aircraft under consideration to fulfil the needs of the Imperial Japanese Naval Air Service were given a shisaku seizo (trial manufacture) designation. This was combined with the current era year (i.e. […]

IJAAF Unit Structure

May 8, 2015 PE Matt 0

The basic unit of the IJAAF unit structure was the chutai, which translates as “squadron” and is roughly similar to the German staffel. Chutai consisted of perhaps 9 aircraft, and could be specified as dokuritu […]

Japanese Aircraft Naming Conventions

February 22, 2015 PE Matt 0

One of the difficulties in writing about Japanese aircraft of the World War 2 era is how you refer to the planes themselves. The Japanese had confusing naming schemes that they used in contemporary documents, […]