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基于有限元分析的飞机燃油歧管设计实体化和增材制造技术评估

摘要

飞机燃油系统允许机组人员为飞机的推进系统和辅助动力单元(APU)泵送、管理和输送航空或喷气燃料。燃油系统因所安装飞机的性能不同而有很大差异。燃油系统的设计目的是从油箱到发动机提供不间断的清洁燃料流。在发动机功率、高度、姿态和所有批准的飞行机动的条件下，发动机必须有燃料可用。小型飞机的燃油系统有两种常见的分类——重力供油系统和燃油泵系统，目前的研究主要集中在后者。辅助燃油泵在压力下向燃料/空气控制单元提供燃料，用于发动机启动和/或紧急使用。启动后，由发动机驱动的燃油泵在燃油箱的压力下向燃料/空气控制单元提供燃料。该控制单元根据混合控制设置计量燃料，并以节流阀控制的速率将其发送到燃料歧管阀。到达燃料歧管阀门后，燃料被分配到各个燃料排放喷嘴。排气喷嘴，位于每个气缸盖，将燃料/空气混合物直接注入每个气缸盖的进气口。 An aircraft's fuel system has a more profound effect on aircraft performance than any other airframe system. Any failure in the fuel manifold will lead to catastrophic aircraft damage and it is very important to consider all the critical flight mission points for design substation. The current project work focuses on the design substantiation of twin engine commercial aircraft engine fuel manifold system to operate satisfactorily under all conditions, such as acceleration and deceleration, temperature, pressure, and flight attitudes. This work also focuses on the alternative manufacturing methodology “Additive Manufacturing Technique” for design optimization using finite element analysis. The proposed methodology will be verified in order to meet the FAA requirements. Hence in the present investigation attempts have been made on the following major sections fuel manifold design substantiation for temperature and pressure requirement, vibration analysis, high cycle and low cycle fatigue analysis, design optimization using additive manufacturing technique. A comparative study has been made between conventional and additive manufacturing. Analysis results has been correlated based on hand calculated results which indicates less than five percent deviation to satisfy the FAA guidelines. The rise in number of vehicles had led to many problems like traffic congestion, increase in consumption of fuels, rising travel costs. Considering all these problems we have studied different papers. This paper introduces bike sharing application which will help people to travel on one bike and share their expenses and also reduce pollution.

王晓燕，王晓燕，王晓燕，王晓燕*，王晓燕

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