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The most common commercial wire size is 0.038 mm (1.5 mils) in diameter and 1 mm (40 mils) in length, but lengths ranging from 0.25 mm to 2.5 mm (10 mils to 100 mils) can be encountered. From the available explosives, only PETN at low densities can be initiated by sufficiently low shock to make its use practical in commercial systems as a part ...
The 203 mm 8"/55 caliber Mark 71 gun was the US Navy's Major Caliber Lightweight Gun (MCLWG) program. The system was designed and tested in 1975, but the program was terminated in 1978. Gerald Bull and Naval Ordnance Station Indian Head tested an 11 in (280 mm) sub-caliber saboted long-range round [6] in a stretched 16"/45 caliber Mark 6 gun in ...
The basis of the system is the 20 mm M61 Vulcan rotary cannon, used by the United States military on various tactical aircraft since 1959, linked to a K u band fire control radar system for acquiring and tracking targets. This proven system was combined with a purpose-made mounting, capable of fast elevation and traverse speeds, to track ...
These included 8 in (203 mm) coastal defense guns, 1.5 in (38 mm) anti-tank gun positions, machine gun emplacements, rifle pits, 15 feet (4.6 m) deep tank barriers with anti-tank guns and barbed wire. These were designed to hold the island until reinforcements could arrive.
A guy-wire, guy-line, guy-rope, down guy, or stay, also called simply a guy, is a tensioned cable designed to add stability to a freestanding structure. They are used commonly for ship masts , radio masts , wind turbines , utility poles , and tents .
The waterline belt of the Queen Elizabeth class consisted of Krupp cemented armour (KC) that was 13 inches (330 mm) thick over the ships' vitals. The gun turrets were protected by 11 to 13 inches (279 to 330 mm) of KC armour and were supported by barbettes 7–10 inches (178–254 mm) thick. The ships had multiple armoured decks that ranged ...
Size: 68.6 mm x 53.4 mm; Weight: 25 g; ICSP Header: Yes; Power Sources: USB connector. USB bus specification has a voltage range of 4.75 to 5.25 volts. The official Uno boards have a USB-B connector, but 3rd party boards may have a miniUSB / microUSB / USB-C connector. 5.5mm/2.1mm barrel jack connector. Official Uno boards support 6 to 20 volts ...
The defenses were connected by the usual tunnels and trenches, affording underground mobility. On the top of the ridge were four 50 mm mortars, and on the reverse slope to the south were three more. Artillery check points had been established for 62nd Division field pieces to the south. Barbed wire and mine fields protected the major approaches ...