The invention relates to a flow control device (60) on a structure such that strain in the structure is at least partially transmitted to the flow control device. The flow control device has at least two states or shapes separated by an elastically unstable region. The flow control device is arranged to rapidly transition or jump from the first state to the second state when a strain in the structure exceeds an activation threshold of the flow control device (60). In an example, a spoiler (12) on the airfoil has a rest position in which the spoiler is substantially flush with the low pressure surface and an activated position in which the spoiler protrudes from the low pressure surface and alters airflow over the surface. The spoiler (12) bends to move from a rest position to an activated position when a strain in the airfoil exceeds a threshold. The deployed spoiler (12) reduces lift on the airfoil for reducing lift-induced strain of the airfoil to which the spoiler is attached.
本发明涉及一种位于结构件上的流动控制装置(60),使得结构件中的应变至少部分地传递至该流动控制装置。流动控制装置具有由弹性非稳定区域分开的至少两个状态或形状。流动控制装置布置成在结构件中的应变超过流动控制装置(60)的激活阈值时从第一状态快速过渡或突跳至第二状态。在示例中,翼型上的扰流板(12)具有其中扰流板与低压力表面基本齐平的静止位置以及其中扰流板从低压力表面突出并改变该表面上方的气流的激活位置。扰流板(12)在翼型中的应变超过阈值时弯曲成从静止位置移动至激活位置。部署的扰流板(12)减少了翼型上的升力,从而用于减少扰流板所附接至的翼型的升力引起的应变。
Flow control device
流动控制装置
2023-08-01
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |