The invention provides a variable-speed helicopter airworthiness qualification certification noise equivalent test method. The method comprises the following steps: determining a reference test condition; acquiring test and measurement conditions; a flight state test is carried out under the reference test condition, the test condition and the measurement condition under the weather condition, the take-off test condition, the horizontal fly-over test condition and the approach test condition; meanwhile, the invention further provides a variable-speed helicopter airworthiness qualification certification noise equivalent test device. Through the equivalent test method, the Mach number of the advancing blade tip in the test is kept consistent with the Mach number of the advancing blade tip under the reference test condition, and the noise airworthiness of the variable-rotor-speed helicopter is ensured to be qualified.
本申请提供了一种变转速直升机适航合格审定噪声等效试验方法,所述方法包括:确定基准试验条件;获取试验和测量条件;气象条件、起飞试验条件、水平飞越试验条件、进近试验条件在所述基准试验条件、试验和测量条件下,进行飞行状态的试验;同时,本申请还提供了一种变转速直升机适航合格审定噪声等效试验装置;通过上述等效试验方法,使试验时的前行桨尖马赫数与基准试验条件下的前行桨尖马赫数保持一致,确保变旋翼转速直升机噪声适航合格审定。
Variable-speed helicopter airworthiness qualification certification noise equivalent test device and method
变转速直升机适航合格审定噪声等效试验装置和方法
2024-01-02
Patent
Electronic Resource
Chinese
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen |
Airworthiness certification method for lightning protection of helicopter
European Patent Office | 2023
|Airworthiness certification method for weight balance of helicopter
European Patent Office | 2023
|Helicopter noise qualification certification measurement system and method
European Patent Office | 2023
|Airworthiness Certification Criteria
NTIS | 2004