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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.

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  • 유상 하중비 (ko)
  • Payload fraction (en)
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  • 유상 하중비는 페이로드의 제작과 엔지니어링에 사용되는 공식이다. 공식은 로켓의 총 질량을 페이로드의 질량으로 나눈 값이다. 여기서 나눌 때 연료도 합쳐서 공식의 변수에 수를 대입하여 공식을 구한다. (ko)
  • 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. (en)
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  • 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. (en)
  • 유상 하중비는 페이로드의 제작과 엔지니어링에 사용되는 공식이다. 공식은 로켓의 총 질량을 페이로드의 질량으로 나눈 값이다. 여기서 나눌 때 연료도 합쳐서 공식의 변수에 수를 대입하여 공식을 구한다. (ko)
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