Performance Enhancement of a Vertical Tail Model with Sweeping Jet Actuators
Performance Enhancement of a Vertical Tail Model with Sweeping Jet Actuators
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DOI：
10.2514/6.2013-411
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发表时间：
2013-01
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影响因子：
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通讯作者：
Roman Seele;E. Graff;John C. H. Lin;I. Wygnanski
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文献类型：
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作者：
Roman Seele;E. Graff;John C. H. Lin;I. Wygnanski
在加州理工学院卢卡斯自适应壁风洞中对12%厚的通用垂尾模型进行的主动流控制（AFC）实验表明，在接近起飞转速的自由流速度下，从垂直安定面后缘（TE）发出的扫掠喷流在大范围的方向舵偏转角和偏航角下显著增加了侧向力系数。结果表明，在没有偏航的情况下，2%的吹气动量系数（C（sub mu））在最大常规舵偏角处使侧向力增加超过50%。在这些条件下，即使C（sub mu）= 0.5%，侧向力也增加了20%以上。这项工作是由美国宇航局环境责任航空（ERA）项目和这种流量控制应用的成功演示可能有深远的影响。它可以导致AFC技术在关键飞机控制表面和升力增强装置（襟翼）上的有效应用，这将有助于通过减小机翼和控制表面的尺寸和重量或减少由于陡峭的爬升和下降而产生的噪音来减少燃料消耗。
Active Flow Control (AFC) experiments performed at the Caltech Lucas Adaptive Wall Wind Tunnel on a 12%-thick, generic vertical tail model indicated that sweeping jets emanating from the trailing edge (TE) of the vertical stabilizer significantly increased the side force coefficient for a wide range of rudder deflection angles and yaw angles at free-stream velocities approaching takeoff rotation speed. The results indicated that 2% blowing momentum coefficient (C(sub mu) increased the side force in excess of 50% at the maximum conventional rudder deflection angle in the absence of yaw. Even C(sub mu) = 0.5% increased the side force in excess of 20% under these conditions. This effort was sponsored by the NASA Environmentally Responsible Aviation (ERA) project and the successful demonstration of this flow-control application could have far reaching implications. It could lead to effective applications of AFC technologies on key aircraft control surfaces and lift enhancing devices (flaps) that would aid in reduction of fuel consumption through a decrease in size and weight of wings and control surfaces or a reduction of the noise footprint due to steeper climb and descent.