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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >SCRAMJET FUEL FEED SYSTEM MODELLING FOR FLIGHT AND GROUND EXPULSION TRIALS
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SCRAMJET FUEL FEED SYSTEM MODELLING FOR FLIGHT AND GROUND EXPULSION TRIALS

机译：飞行和地面驱赶试验的SCRAMJET燃油进料系统建模

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摘要

ISRO s scramjet characterization flight uses gaseous hydrogen (GH2),as fuel and atmospheric air as oxidizer.Fuel Feed System (FFS) is one o f the major subsystems in the scramjet characterization flight which ensures injection o f required quantity o f fuel towards two scramjet engines.FFS consists o f two GH2 bottles,pressure regulator and orifices,connected using feedlines.Hydrogen is supplied to the engine through choked orifices, so that any fluctuation in the engine chamber pressure may not affect the flow rates.A detailed transient flow and thermal model is developed to determine the pressure at orifice inlet and flow rate during ground flow qualification test.Subsequently,the model is used to determine the evolution o f gas bottle pressure,flow rate and regulated flow duration through FFSfor ground GH2 expulsion test as well as for scramjet characterization flight.The model is able to capture the flow physics and pressure evolution obtained during the ground expulsion trials andflight.
机译：ISRO的超燃冲压发动机表征飞行使用气态氢（GH2）作为燃料，大气中的空气作为氧化剂。燃油进料系统（FFS）是超燃冲压发动机表征飞行的主要子系统之一，可确保向两台超燃冲压发动机喷射所需量的燃料.FFS由两个GH2瓶，压力调节器和节流孔组成，通过供气管线连接。氢气通过节流孔向发动机供气，因此发动机舱压力的任何波动都不会影响流量。详细的瞬态流量和热模型开发用于确定地面流量合格性测试期间孔口入口处的压力和流量。随后，该模型用于通过地面FS2排放测试和超燃冲压发动机的FFS确定气瓶压力，流量和调节流量持续时间的演变该模型能够捕获在地面驱逐试验中获得的流动物理学和压力演化dflight。

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