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The current average rate for a 30-year fixed mortgage is 7.13% for purchase and 7.20% for refinance — down 6 basis points from 7.19% for purchase and no change from 7.20% for refinance last ...
History The F119 resulted from the Joint Advanced Fighter Engine (JAFE) program in the early 1980s aimed at supplying the powerplant for the Air Force's Advanced Tactical Fighter (ATF). Detailed design of Pratt & Whitney's submission, designated internally as PW5000, began when the request for proposals (RFP) for JAFE, later renamed ATF Engine, was released in May 1983. Advances in engine ...
The levelized cost of electricity (LCOE) is a metric that attempts to compare the costs of different methods of electricity generation consistently. Though LCOE is often presented as the minimum constant price at which electricity must be sold to break even over the lifetime of the project, such a cost analysis requires assumptions about the value of various non-financial costs (environmental ...
The 20-centimetre (7.9 in), 6-kilogram (13 lb) carbon fiber flywheel spins in a vacuum to eliminate friction. When partnered with a four-cylinder engine, it offers up to a 25 percent reduction in fuel consumption versus a comparably performing turbo six-cylinder, providing an 80 horsepower (60 kW) boost and allowing it to reach 100 kilometres ...
The average household size was 2.28 and the average family size was 2.75. In the county, the population was spread out, with 19.40% under the age of 18, 7.40% from 18 to 24, 26.30% from 25 to 44, 27.70% from 45 to 64, and 19.20% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 97.10 males.
A standard 20-MPa, 5-L steel bottle has a mass of 7.5 kg, and a superior one 5 kg. High-tensile-strength fibers such as carbon fiber or Kevlar can weigh below 2 kg in this size, consistent with the legal safety codes. One cubic meter of air at 20 °C has a mass of 1.204 kg at standard temperature and pressure.
Development Origins The J58, company designation JT11, had its origins in the larger JT9 (J91) engine. It was a 3/4 scale JT9 with a mass flow of 300 lb/s (140 kg/s), down from 400 lb/s (180 kg/s). The JT11 was proposed to the US Navy under their designation J58. It was also proposed for various Navy and Air Force aircraft, e.g. Convair F-106, North American F-108, Convair B-58C, Vought XF8U-3 ...
The Commercial Off The Shelf (COTS) concept, which translated into the CUCV program, was originally intended to augment the purpose-built but expensive Gama Goat 6 x 6, 1 + 1 ⁄ 4-ton trucks and M151 series 1 ⁄ 4-ton "jeeps" approaching the end of their service life in the mid-1970s.
History Development General Electric (GE) began developing the GE37, which would become basis of the XF120 and YF120, for the Joint Advanced Fighter Engine (JAFE) program in the early 1980s aimed at supplying the powerplant for the Air Force's Advanced Tactical Fighter (ATF). The core technology used in the F120 design was developed during two industry-government programs, the Advanced ...
The 20 beam Shiva laser at LLNL is completed, capable of delivering 10.2 kilojoules of infrared energy on target. At a price of $25 million and a size approaching that of a football field, the Shiva laser is the first of the "megalasers" at LLNL and brings the field of ICF research fully within the realm of " big science ".