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[12] [13] The main gallium nitride (GaN)-based AESA array measures 9 ft × 13 ft (2.7 m × 4.0 m), is a bolt-on replacement for the current antenna, and is oriented toward the primary threat; two new rear panel arrays are a quarter the size of the main array and let the system look behind and to the sides, providing 360-degree coverage.
A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.
It was estimated in 2012 that, based on then-current technology, a 20 Ah solid-state battery cell would cost US$100,000, and a high-range electric car would require between 800 and 1,000 of such cells. [14] Likewise, cost has impeded the adoption of thin-film solid-state batteries in other areas, such as smartphones. [67]
The F-35 was the product of the Joint Strike Fighter (JSF) program, which was the merger of various combat aircraft programs from the 1980s and 1990s. One progenitor program was the Defense Advanced Research Projects Agency (DARPA) Advanced Short Take-Off/Vertical Landing (ASTOVL) which ran from 1983 to 1994; ASTOVL aimed to develop a Harrier jump jet replacement for the U.S. Marine Corps ...
The lithium–sulfur battery (Li–S battery) is a type of rechargeable battery. It is notable for its high specific energy . [ 2 ] The low atomic weight of lithium and moderate atomic weight of sulfur means that Li–S batteries are relatively light (about the density of water).
1919 – Lawn mowers When Husqvarna acquired Norrahammars Bruk in 1918, the product range expanded to heating boilers and lawn mowers. The first test with a lawn mower powered by an engine was done in 1947. 1959 – Chainsaws As demand for bicycles, mopeds and motorcycles declined, forestry became increasingly important. The expertise in ...
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