A steam turbine
with the case opened. Such turbines produce most of the electricity used today. Electricity consumption and living standards are highly correlated. Electrification is believed to be the most important engineering achievement of the 20th century.
Technology ("science of craft", from Greek τέχνη, techne, "art, skill, cunning of hand"; and -λογία, -logia) is the sum of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines to allow for operation without detailed knowledge of their workings. Systems (e.g. machines) applying technology by taking an input, changing it according to the system's use, and then producing an outcome are referred to as technology systems or technological systems.
The simplest form of technology is the development and use of basic tools. The prehistoric discovery of how to control fire and the later Neolithic Revolution increased the available sources of food, and the invention of the wheel helped humans to travel in and control their environment. Developments in historic times, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact freely on a global scale.
The CFM International CFM56
(U.S. military designation F108
) series is a French-American family of high-bypass turbofan aircraft engines
made by CFM International
(CFMI), with a thrust range of 18,500 to 34,000 lbf
(82 to 150 kN
). CFMI is a 50–50 joint-owned company of Safran Aircraft Engines
(formerly known as Snecma) of France, and GE Aviation
(GE) of the United States. Both companies are responsible for producing components and each has its own final assembly line. GE produces the high-pressure compressor
, and high-pressure turbine
, Safran manufactures the fan, gearbox
and the low-pressure turbine, and some components are made by Avio
of Italy and Honeywell
from the US. The engines are assembled by GE in Evendale, Ohio
, and by Safran in Villaroche
, France. The completed engines are marketed by CFMI. Despite initial export restrictions, it is one of the most common turbofan aircraft engines
in the world, in four major variants. Read more...
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