Active "Fail Safe" Micro-Array Flow Control For Advanced Embedded Propulsion Systems
Active "Fail Safe" Micro-Array Flow Control For Advanced Embedded Propulsion Systems
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DOI：
10.2514/6.2009-741
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发表时间：
2009-08
期刊：
影响因子：
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通讯作者：
B. H. Anderson;J. Mace;M. Mani
中科院分区：
文献类型：
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作者：
B. H. Anderson;J. Mace;M. Mani
这项研究工作的主要目标是开发并分析证明增强的第一代主动“故障安全”混合流动控制技术，同时管理车辆前体的边界层，并控制现代蛇形或嵌入式进口s管配置中产生的二次流。增强的第一代技术侧重于微叶片和微坡道，与微射流高度集成，为高度集成的流动控制系统的“强度”或有效性提供非线性增强。微射流质量流量比（Wjet/Waip）范围为0.10% ~ 0.30%，射流总压比（Pjet/Po）范围为1.0 ~ 3.0。所研究的发动机排气气流范围比以前要求的微射流气流减少了大约10倍。因此，通过预调节，或向微叶片和/或微斜坡产生的涡流中注入极少量的高压射流，可以实现主动流动控制，实现控制流量的大幅度增大。命名法
The primary objective of this research effort was to develop and analytically demonstrate enhanced first generation active “fail-safe” hybrid flow-control techniques to simultaneously manage the boundary layer on the vehicle fore-body and to control the secondary flow generated within modern serpentine or embedded inlet S-duct configurations. The enhanced first-generation technique focused on both micro-vanes and micro-ramps highly-integrated with micro-jets to provide non-linear augmentation for the “strength” or effectiveness of highly-integrated flow control systems. The study focused on the micro-jet mass flow ratio (Wjet/Waip) range from 0.10% to 0.30% and jet total pressure ratios (Pjet/Po) from 1.0 to 3.0. The engine bleed airflow range under study represents about a 10 fold decrease in micro-jet airflow than previously required. Therefore, by preconditioning, or injecting a very small amount of high-pressure jet flow into the vortex generated by the micro-vane and/or micro-ramp, active flow control is achieved and substantial augmentation of the controlling flow is realized. NOMENCLATURE