• Title/Summary/Keyword: W&B manifest

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A Study on Fuel Saving Measure by Fuel Efficiency Analysis Associated with Weight. (중량에 따른 연료효율 분석을 통한 연료 절감 방안 연구)

  • Lee, Jun-Oh;Jeon, Je-hyung;Park, Jeongmin
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.26 no.4
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    • pp.142-148
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    • 2018
  • In recent years, Korea's aviation industry has been developing rapidly due to the emergence of low-cost airlines. In order to survive in such competition, airlines are making various efforts to save the operation cost as much as possible. Fuel costs account for more than 25% of operating costs. For airlines, reducing aircraft fuel costs is an important part of improving profitability. In this study, analyzing the difference weight between flightplan and W&B Manifest for calculated the fuel that was unnecessarily loaded. As a method to calculate the unnecessary fuel was used by Airbus company flight planning program.

Mixture Proportion and Compressive Strength of the Concrete According to Changes of Type of Fine Aggregate and Unit Binder Weight (잔골재원 및 단위결합재량 변화에 따른 콘크리트의 배합 및 강도 특성)

  • Moon, Byeong-Yong;Lee, Sus-Jae;Park, Young-Jun;Jo, Man-Ki;Han, Min-Cheol;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.11a
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    • pp.19-20
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    • 2015
  • In this research, by examining the influence that high quality fine aggregate and low quality fine aggregate have on the strength of concrete through tests, the manifest strength of concrete according to high quality fine aggregate was reviewed. The results showed that compared to low quality fine aggregate usage mixture, the unit volume to achieve the same liquidity decreased and accordingly the W/B also decreased therefore increasing the strength of concrete, and as high quality fine aggregate was used, it is determined that there can be improvements to the economically feasibility of usage mixture and improvement in durability etc.

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