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The Lycoming O-320 is a large family of naturally aspirated, 320 cu in (5.2 L) air-cooled, horizontally-opposed four-cylinder, direct-drive engines produced by Lycoming Engines. Introduced in 1953, it is commonly used on light aircraft such as the Cessna 172 and Piper Cherokee , and remains in production as of 2024.
The AR-320 is a 3D early warning radar developed by the UK's Plessey in partnership with US-based ITT-Gilfillan.The system combined the receiver electronics, computer systems and displays of the earlier Plessey AR-3D with a Gilfillan-developed transmitter and planar array antenna from their S320 series.
Schematic diagram of the Führerbunker. By early 1945, Nazi Germany was on the verge of total military collapse. Poland had fallen to the advancing Soviet Red Army, which was preparing to cross the Oder between Küstrin and Frankfurt-an-der-Oder with the objective of capturing Berlin 82 kilometres (51 mi) to the west. [12]