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[ pdf ] Civil Jet Engines Technology Speed

Civil Jet Engines Technology Speed Download
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Source: www.techzoom.net 
File size: 93.24 KB
File type: pdf
Last download on: Sat May 05, 2018 11:23:50 PM
Short Desciption:
Abstract. In this paper, the speed of technology of civil jet engines is investigated. A fundamental limit is found to exist by the second law of thermodynamics, but it is not reached yet. A technology measure based on airplane efficiency is derived and applied to jet airlines of different sizes and time periods, ranging back to the 1960ís.

Airplanes from several manufacturers in several variants have been considered. The year of first appearance on the market was decisive. The oldest airliner is the Boeing 707-120 from 1957, the newest the Airbus 380-841 from 2005. Table 1 contains a list of all airplanes, with the calculated APK. In Figure 3, the data samples are plotted, along with a polynomial least-squares fitted curve.
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