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To express the efficiency of a generator or power plant as a percentage, invert the value if dimensionless notation or same unit are used. For example: A heat rate value of 5 gives an efficiency factor of 20%. A heat rate value of 2 kWh/kWh gives an efficiency factor of 50%. A heat rate value of 4 MJ/MJ gives an efficiency factor of 25%.
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 ...
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 ...
One 2,150 hp (1,600 kW) PW121 turboprop will be replaced by a 1 MW (1,300 hp) gas turbine joined with an electric motor of the same rating, powered by off-the-shelf lithium-ion batteries for takeoff and climb. The turbine is used alone in cruise and drives the motor-generator to recharge the batteries in descent.
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.
Development Work on the Antonov An-225 began in 1984 with a request from the Soviet government for a large airlifter as a replacement for the Myasishchev VM-T. The specifics of this request included the ability to carry a maximum payload of 231,838 kilograms (511,116 lb), both externally and internally, while operating from any runway of at least 3,500 metres (11,500 ft). As originally set out ...
The Rolls-Royce Trent is a family of high-bypass turbofans produced by Rolls-Royce.It continues the three spool architecture of the RB211 with a maximum thrust ranging from 61,900 to 97,000 lbf (275 to 431 kN).
An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbine components : 1-Foundation, 2-Connection to the electric grid, 3-Tower, 4-Access ladder, 5-Wind orientation control (Yaw control), 6-Nacelle, 7-Generator, 8-Anemometer, 9-Electric or Mechanical Brake, 10-Gearbox, 11-Rotor blade, 12-Blade pitch control, 13-Rotor hub
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