The invention discloses a rudder with an additional acoustic black hole, and relates to the technical field of aerospace, the rudder comprises a rudder body and an acoustic black hole structure, a cavity is formed in the rudder body, a base is arranged in the rudder body, the acoustic black hole structure is located in the cavity and arranged on the base, and the acoustic black hole structure is located in the cavity and arranged on the base. And the acoustic black hole structure is detachably connected with the base. According to the wave energy gathering effect and the dynamic vibration absorption principle of the acoustic black hole, the flutter amplitude value of the rudder can be reduced to a certain extent by arranging the acoustic black hole structure, and the flutter Mach number, the flutter critical speed and the flutter vibration pressure of the rudder are improved.
本发明公开了一种含附加式声学黑洞的方向舵,涉及航空航天技术领域,包括方向舵本体和声学黑洞结构,所述方向舵本体的内部设置有空腔,所述方向舵本体的内部设置有基座,所述声学黑洞结构位于所述空腔中且设置在所述基座上,所述声学黑洞结构与所述基座能够拆卸地连接。根据声学黑洞的波动能量聚集效应和动力吸振原理,本发明通过设置声学黑洞结构能够在一定程度上降低方向舵的颤振幅值,提升方向舵的颤振马赫数、颤振临界速度和颤振动压。
Rudder with additional acoustic black hole
一种含附加式声学黑洞的方向舵
2023-03-31
Patent
Elektronische Ressource
Chinesisch
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