Übersetzung und Analyse von Wörtern durch künstliche Intelligenz ChatGPT
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useful load - Übersetzung nach russisch
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![Microwave dummy load designed to attach to [[waveguide]].](https://commons.wikimedia.org/wiki/Special:FilePath/Waveguide dummy load.jpg?width=200 "Microwave dummy load designed to attach to [[waveguide]].")
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Definition
Wikipedia
In aerospace engineering, payload fraction is a common term used to characterize the efficiency of a particular design. Payload fraction is calculated by dividing the weight of the payload by the takeoff weight of aircraft. Fuel represents a considerable amount of the overall takeoff weight, and for shorter trips it is quite common to load less fuel in order to carry a lighter load. For this reason the useful load fraction calculates a similar number, but based on the combined weight of the payload and fuel together.
Propeller-driven airliners had useful load fractions on the order of 25–35%. Modern jet airliners have considerably higher useful load fractions, on the order of 45–55%.
For spacecraft the payload fraction is often less than 1%, while the useful load fraction is perhaps 90%. In this case the useful load fraction is not a useful term, because spacecraft typically cannot reach orbit without a full fuel load. For this reason the related term propellant mass fraction, is used instead. However, if the latter is large, the payload can only be small.
