A vibration and noise reduction device for an exhaust port on the surface of a fuselage comprises a flow equalizing device arranged on an exhaust airflow path of the exhaust port so as to rectify exhaust airflow flowing through the flow equalizing device and incoming flow outside the fuselage; and the flow guide device is arranged at the exhaust port on the outer side of the surface of the fuselage so as to perform flow guide or pneumatic interference on the external incoming flow of the fuselage and the exhaust airflow passing through the exhaust port, so that vibration and noise are reduced. The invention further relates to a method for controlling the vibration and noise reduction equipment. According to the vibration and noise reduction equipment, the problems of vibration and noise of the exhaust valve caused by airflow excitation vibration are effectively solved, and meanwhile the aerodynamic performance of an aircraft is improved.
一种用于机身表面排气口的减振降噪设备,包括:均流装置,所述均流装置设置在所述排气口的排气气流路径上,以对流过所述均流装置的排气气流和机身外部来流进行整流;以及导流装置,所述导流装置在所述机身表面外侧设置在所述排气口处,以对经过所述排气口处的机身外部来流和所述排气气流进行导流或气动干扰而降低振动和噪声。还涉及一种控制上述减振降噪设备的方法。本发明的减振降噪设备有效解决因气流激振引发的排气活门振动和噪声问题,同时改善飞机气动性能。
Vibration and noise reduction equipment for exhaust port in surface of fuselage and control method of vibration and noise reduction equipment
一种用于机身表面排气口的减振降噪设备及其控制方法
2024-01-02
Patent
Elektronische Ressource
Chinesisch
Panel vibration control for booming noise reduction
Kraftfahrwesen | 1991
|Vibration and noise reduction device, lateral propulsion equipment and ship
Europäisches Patentamt | 2020
|