波音737NG飞机燃油系统故障和可靠性数据分析

本篇论文主要针对飞机在运行过程中出现的典型燃油系统故障进行综合分析和评估其故障部件的可靠性,在排故过程中对出现故障的可能性进行一个综合的分析,最终发现问题所在,并对其可靠性数据进行分析总结,便于在燃油系统中工作的运用。     

生活垃圾制备衍生燃料的环境污染及处置对策

城市生活垃圾制备垃圾衍生燃料在燃烧过程中会释放出污染物质,会对人体和环境产生一定的危害作用。从生活垃圾处置方法,制备垃圾衍生燃料的工艺技术及垃圾衍生燃料技术对环境的影响等方面,阐述了对释放出的污染物质的认识,提出了采取有效手段治理污染是生活垃圾制备垃圾衍生燃料技术推广的关键所在。     

汽柴油升级装置的工业应用

中油大港石化公司作为奥运期间北京市场高清洁油品的供应单位,积极进行装置改造,于2008年投产75万t／a汽油加氢脱硫装置和t00万t／a蜡油加氢裂化装置,实现了汽、柴油质量升级,按时完成了供应任务。从产品质量、产品结构以及添加剂消耗等方面对升级前后的情况进行了对比论述,根据升级后存在的问题提出了产品质量的改进建议     

柴油清洁剂的研究与应用

介绍了柴油清洁剂在国内外的研究现状及在我国的应用前景。     

面向新工科的飞机燃油系统虚拟仿真实验设计

在教育信息化改革的背景下,结合“新工科”建设、AABI(国际航空认证委员会)认证和民航行业发展等需求,构建基于虚拟仿真技术的实验教学体系,针对工程实际问题设计实验项目,以飞机燃油系统全流程维修为设计主线,通过建立人才培养目标指标点支撑矩阵,分析实验需求,优化实验设计,教学实施效果良好。     

Commodity price pass-through in the US airline industry and the hidden perks of consolidation

How do changing jet fuel prices impact airline revenues? As expenses for jet fuel are one of the most relevant cost factors for airlines, their economic success largely depends on the ability to match changes on the cost side with an adaption on the revenue side. While previous studies primarily focused on the impact of fuel price changes to consumer prices, this paper empirically examines the ability of US airlines to pass-through lagged jet fuel prices to scaled operating revenues from an airline driven perspective. Our results suggest that the extent to which an exogenous increase in fuel prices can be passed on to revenues will deviate according to the competitive situation faced by an airline. Based on these findings our research should also be of interest for European policy makers who are discussing actions to exogenously increase jet fuel prices due to environmental reasons.     

Subsidizing power

This study explores whether the amount of fossil fuel subsidies paid by the government is subject to an election cycle. Theoretically, it is not a priori directly clear whether the provision of fossil fuel subsidies should go up or down when elections are upcoming. On the one hand, governments may reap electoral benefits from offering additional support in an election year since voters generally prefer candidates from whom they expect to receive greater material well-being by reducing the prices of basic goods. On the other hand, if the number of recipients is only small or when they are politically not well organized, reducing fossil fuel subsidies to finance a tax cut or an increase in other public spending areas that benefit and attract more voters might be a more successful re-election strategy. My main empirical findings clearly show a U-shaped election effect. It turns out that election cycles encourage fossil fuel support only in countries that have either a large or small fossil fuel demand. In these countries, governments are more inclined to provide additional fossil fuel support in an election year. In turn, I do not find any significant evidence for the notion that upcoming elections create a window of opportunity to reduce fossil fuel subsidies. Finally, the significant election effects are in particular visible during presidential elections.     

南沙油库燃料油装船合理调度的研究

针对一起燃料油装船的案例,使用运筹学的原理和方法,根据实际情况建立了运输模型,利用QMfor windows软件求解该运输模型,得出了油泵输送燃料油装船耗电量最小的分配方案,并将此最佳分配方案与平时的常规操作方案进行了比较。另外还讨论了码头升级后燃料油罐装船新的最佳分配方案。     

内燃机代用燃料的废气排放探讨

机动车尾气污染已更甚于煤烟型污染 ,成为城市大气环境的主要污染源 ,分析了燃用 7种不同的代用燃料的 CO,NOx,HC,CO2 的排放量及烟度值 ,并与燃用传统燃料(汽油或柴油 )作了比较 ,其中着重分析了燃用压缩天然气及压缩天然气 -柴油双燃料的废气排放情况 ,指出燃用代用燃料将减轻对大气环境的危害 ,改善大气环境质量。     

Hedging jet fuel price risk: The case of U.S. passenger airlines

Jet fuel accounts for a large portion of passenger airlines' operating costs, and airlines' earnings are susceptible to swings in the price of jet fuel. This study uses daily data over the past two decades to determine the minimum variance hedge ratio for airlines wishing to hedge jet fuel price risk with futures, while also establishing the best cross hedging asset. Airlines hedging with futures would create the most effective hedge by using heating oil futures contracts with a 3-month maturity. We also find that beyond the 3-month veil, increased time to maturity makes heating oil less effective as a cross hedge proxy for jet fuel. However, both in-sample analysis and Monte Carlo simulation results with daily data show that none of the 4 cross hedge proxies, including heating oil, can be considered highly effective.