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British sound ranging during that war began with crews that used both sound and flash detection. The sound ranging operators used equipment that augmented human hearing. Using the gun flash, the flash crew would determine a bearing to the gun using a theodolite or transit. The sound detection crew would determine the difference in time between ...
Asdic was the British version of sonar developed at the end of World War I based on the work of French physicist Paul Langevin and Russian engineer M. Constantin Chilowsky. . The system was developed as a means to detect and locate submarines by their reflection of sound wa
Between the World Wars, before the invention of radar, parabolic sound mirrors were used experimentally as early-warning devices by military air defence forces to detect incoming enemy aircraft by listening for the sound of their engines.
As a military air defense tool, passive acoustic location was used from mid-World War I [1] to the early years of World War II to detect enemy aircraft by picking up the noise of their engines. It was rendered obsolete before and during World War II by the introduction of radar , which was far more effective (but interceptable).
Research on ASDIC and underwater sound was expanded in the UK and in the US. Many new types of military sound detection were developed. These included sonobuoys, first developed by the British in 1944 under the codename High Tea, dipping/dunking sonar and mine-detection sonar.
The British Army uniform has sixteen categories, ranging from ceremonial uniforms to combat dress to evening wear. No. 8 Dress, the day-to-day uniform, is known as "Personal Clothing System – Combat Uniform" (PCS-CU) [262] and consists of a Multi-Terrain Pattern (MTP) windproof smock, a lightweight jacket and trousers with ancillary items ...
Experiments with acoustic mirrors and similar devices were carried out but these always proved unsatisfactory, with detection ranges often as low as 5 miles (8.0 km) even in good conditions. Lacking an alternative, in December 1934, the Air Ministry (AM) made plans to deploy sound detection devices around London as part of the Thames Estuary ...
The British Underwater Test and Evaluation Centre (BUTEC) is an underwater military test and evaluation range in the Inner Sound between the island of Raasay and the Applecross peninsula, on the north west coast of Scotland. BUTEC is operated by defence contractor QinetiQ on behalf of the Ministry of Defence and Royal Navy. The range is used ...