Improvement of experimental capabilities in aerodynamic control

在目前的航天设计中，有必要对功能进行过度设计，以确保在紧急情况下的稳定性和安全性。最理想的做法是发展能力，用可靠的技术缩小商用飞机的大部件尺寸，确保在危险条件下的安全运行。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。拟议的主动控制的使用将允许固定翼的几何形状，通过仔细的空气动力流动控制来模仿襟翼和其他外部机构的行为。着眼于现代飞机的垂直尾翼，这在侧风中提供了方向稳定性，即飞机抵抗滑入与飞机纵轴不一致的相对风的能力。垂直尾翼的大小通常是为模型系列的最短版本设置的，而对于该系列中较长的飞机来说则过大。在发动机故障的情况下，尾部提供修剪以产生阻力。如果有可能延迟或消除高度偏转方向舵上的流动分离，从而改善垂直尾翼产生的侧向力，那么就有可能显著减小垂直尾翼的尺寸，并允许改进控制和更好的燃油经济性来实现这一点，因此有必要对现有的风洞进行现代化改造，配备现代发动机和控制系统，以及用于测量的高容量粒子图像测速系统。隧道目前尚未投入使用，这对学生正在进行的研究需求至关重要。*这对隧道的长期可行性和总部基地使用这一独特资源至关重要。

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.