Improvement of experimental capabilities in aerodynamic control

在当前的航空航天设计中，有必要过度设计功能，以确保紧急情况下的稳定性和安全性。理想的做法是开发能力，以减少商用飞机大型部件的尺寸，并采用可靠的技术，确保在危险条件下安全运行。大多数主要的航空航天公司都在以各种形式追求这项技术。主动控制的建议使用将允许固定翼几何形状，通过仔细的空气动力学流动控制模拟襟翼和其他外部机制的行为。专注于现代飞机的垂直尾翼，这在侧风中提供了方向稳定性，飞机抵抗滑入与飞机纵轴不对齐的相对风的能力。垂直尾翼的尺寸通常适用于型号系列中最短的型号，而对于该系列中较长的飞机则过大。在发动机故障的情况下，尾翼提供修剪以产生阻力。如果有可能延迟或消除高度偏转的方向舵上的气流分离，从而改善垂直尾翼产生的侧力，就有可能显著减小垂直尾翼的尺寸，并改善控制和提高燃油经济性。为此，有必要对现有的风洞进行现代化改造，配备现代化的电机和控制装置，以及用于测量的高容量粒子图像测速系统。这条隧道目前还没有投入使用，这对学生正在进行的研究需求至关重要。***这对隧道的长期生存能力和hqp对这一独特资源的利用至关重要。

Within current aerospace design, it is necessary to over-engineer features to ensure stability and safety under emergency conditions. It would be ideal to develop capabilities to reduce the size of large elements of commercial aircraft with reliable technologies that ensure safe operation under hazardous conditions. Most major***aerospace corporations are pursuing this technology in various forms. The proposed use of active control would allow fixed-wing geometries that through careful aerodynamic flow control mimic the behaviour of flaps and other external mechanisms. Focusing on the vertical tail of modern aircraft, this provides directional stability within cross-winds, the ability of the aircraft to resist slipping into a relative wind not aligned with the longitudinal axis of the aircraft. The size of the vertical tail is often sized for the shortest version of a model family and is oversized for longer aircraft in the series. In the case of engine failure, the tail provides trim to create drag. If it were possible to delay or eliminate flow separation over a highly deflected rudder thereby improving the side force created by the vertical tail, it would be possible to significantly reduce the size of the vertical tail and would allow improved control and better fuel economy To do this, it is necessary to modernize the existing wind tunnel with a modern motor and control and a high capacity particle image velocimetry system for measurement. The tunnel is not operational at this time and this is crucial to the ongoing research needs of students.***This is crucial to the long-term viability of the tunnel and access by HQPs of this unique resource.