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Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
The legal size of crabs is 6.25 in (159 mm) in California, Oregon, and Washington for commercial fisheries [4] [5] and 6.5 in (170 mm) in Alaska and Canada. [3] [7] In recreational fisheries, the minimum size in California and Oregon is 5.75 inches (146 mm) [13] [14], while Washington is 6 inches (150 mm). [15]
The pressure vessel is a seamless cylinder normally made of cold-extruded aluminum or forged steel. [5] Filament wound composite cylinders are used in fire fighting breathing apparatus and oxygen first aid equipment because of their low weight, but are rarely used for diving, due to their high positive buoyancy.
The tropical climate of Bermuda allowed settlers to introduce many non-native species of trees and plants to the island. [81] Today, many types of palm trees, fruit trees, and bananas grow on Bermuda, though the cultivated coconut palms are considered non-native and may be removed. [ 82 ]
The Lockheed Martin/Boeing F-22 Raptor is an American twin-engine, all-weather, supersonic stealth fighter aircraft.As a product of the United States Air Force's Advanced Tactical Fighter (ATF) program, the aircraft was designed as an air superiority fighter, but also incorporates ground attack, electronic warfare, and signals intelligence capabilities.
Minor aerodynamic changes allowed the -300's cruise speed to reach Mach 0.85 compared with Mach 0.84 on the -200 and -100 models, while retaining the same takeoff weight. [72] The -300 could be equipped with the same Pratt & Whitney and Rolls-Royce powerplants as on the -200, as well as updated General Electric CF6 -80C2B1 engines.
The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747.The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles [nmi] (1,900 km; 1,200 mi) of additional range.
The boilers were 15 feet 9 inches (4.80 m) in diameter and 20 feet (6.1 m) long, each weighing 91.5 tonnes and capable of holding 48.5 tonnes of water. [ 33 ] They were fuelled by burning coal, 6,611 tonnes of which could be carried in Titanic ' s bunkers , with a further 1,092 tonnes in Hold 3.