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Aerodynamic Improvement of Flap Performance Using Delta-shaped Vortex Generator

机译:空气动力学改进的三角翼形涡流发生器的襟翼性能

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Low-speed wind tunnel tests were performed to investigate aerodynamic effects of a delta-shaped vortex generator that was installed on the upper surface of the trailing edge flap. The vortex generator was applied for controlling the flow over the trailing edge flap. The test results were showed that the vortex generator increases the lift coefficient and the lift-to-drag ratio when the trailing edge flap deflects to 30deg. The leading edge separation vortices formed by the vortex generator acted to suppress the flow separation from the flap hinge line. The height of the vortex generator is geometrically decided from the flap deflection angles. When the flap deflection angle was zero, no drag penalty was obtained because the height of the vortex generator was zero.
机译:进行了低速风洞测试,以研究安装在后缘襟翼上表面的三角洲型涡流发生器的空气动力学效果。涡流发生器用于控制后缘襟翼上的流量。测试结果表明,当后缘襟翼偏转到30度时,涡流发生器会提高升力系数和升阻比。由涡流发生器形成的前缘分离涡流的作用是抑制流与襟翼铰链线的分离。涡流发生器的高度由襟翼偏转角几何确定。当襟翼偏转角为零时,由于涡流发生器的高度为零,因此没有阻力损失。

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