REG: Equipment to Modernize a Subsonic Wind Tunnel for Gust Simulation and Measurment

用于阵风模拟和测量的亚音速风洞将 用新的控制系统进行修改和管理。阵风 发电机采用的是一种新的设备，根据最近 专利概念，旋转开槽气缸。控制 非线性系统和设备将有广泛应用 飞机和旋翼机的气动弹性研究， 特别是对于气动反馈技术的应用， 以减少飞机和旋翼机的响应。还有就是 使用这种阵风发生器和相关的 控制系统以提供新颖的和改进的空气动力学或风力 桥梁和建筑物比例模型的激励源。通过 通过风洞阵风发生器， 作用在旋转叶片上的气动载荷可以在 非旋转叶片模型。高次谐波控制 因此，用于减小叶片振动响应的概念可以 研究使用阵风发生器产生空气动力学 在转子叶片的特定谐波下模型的激励 系统转子叶片模型反馈控制系统将 基于基于PC的控制器，类似于计划用于 阵风发生器系统或简单的模拟反馈 controller.无论控制器、系统软件 将提供输入一个简单的控制律算法的能力 或系数。* //

A subsonic wind tunnel for gust simulation and measurement will be modified and regimented with a new control system. The gust generator employed is a novel device based upon a recently patented concept, the rotation slotted cylinder. The control system and equipment will have wide applications for nonlinear aeroelastic investigations for aircraft and rotorcraft, especially for the application of aerodynamic feedback techniques to reduce aircraft and rotorcraft response. There is also the potential for the use of this gust generator and associated control system to provide a novel and improve aerodynamic or wind excitation source for scaled models of bridges and buildings. By means of a wind-tunnel gust generator, the harmonic components of aerodynamic loads acting on a rotating blade can be simulated on a non-rotating blade model. Higher harmonic control (HHC) concepts for reducing blade vibration response can therefore be investigated using the gust generator to produce aerodynamic excitation of the model at specified harmonics of a rotor blade system. The rotor blade model feedback control system will be based either on a PC-based controller similar to that planned for the gust generator system or on a simple analog feedback controller. Regardless of the controller, the system software will provide the ability to enter a simple control law algorithm or coefficients.*** //