The invention discloses a silencer for a heavy fixed-wing unmanned aerial vehicle. The silencer is composed of a silencer body, an impedance material and a coiled pipeline. The silencer body is of a coiled structure, resistive noise reduction is designed on the upper end face and the lower end face of the silencer, resistance noise reduction is involved in the pipeline, a honeycomb core is arranged on the inner surface of the pipeline, airflow can flow in the smooth pipeline, meanwhile, resistive resistance noise reduction is achieved, and therefore the power influence of airflow resistance ona small-displacement engine is reduced. The silencer has the advantages that the structure is simple, so that the space utilization structure of the silencer is compact; and meanwhile, an exhaust guide pipe is short, so that the silencer is lighter in weight and smaller in airflow resistance. Under the condition that special application environment requirements exist, the strict requirements forthe weight, the installation space and the exhaust resistance of the silencer when the silencer is applied to the unmanned aerial vehicle are effectively met; and the silencer can also be used as a silencing device of an automobile, and can be used in other occasions where flowing gas is silenced.
本发明公开了一种用于重型固定翼无人机的消音器,由消音器本体、阻抗性材料、盘绕式管道组成;其中,消音器本体采用盘绕式结构,在消音器的上端面、下端面设计阻性消音,在管道中涉及抗性消音,管道内表面设有蜂窝芯,可使气流在通畅管道内流动,而又同时实现其阻性抗性消音,以此来降低气流阻力对小排量发动机的动力影响。消音器具有结构简单,使得消音器的空间利用结构紧凑;同时排气导管短使得消音器的重量更轻,且气流阻力更小。针对有特殊应用环境要求的情况下,有效解决了在无人机上应用时对消音器重量、安装空间、排气阻力方面的严苛要求;其还可用于作为汽车的消音装置使用,以及其它对流动气体进行消音的场合所使用。
Silencer for heavy fixed-wing unmanned aerial vehicle
一种用于重型固定翼无人机的消音器
2021-03-26
Patent
Electronic Resource
Chinese