11 - Operations and Sustainment
EQUIVALENT CALCULATION METHOD OF FLYOVER NOISE LEVEL OF CUTBACK TAKE-OFF FOR CIVIL JET AIRPLANE AIRWORTHINESS CERTIFICATION
Y.-H. Song¹, X.-L. Zhang¹, Q.-H. Liu, Northwestern Polytechnical University, China; Y.-L. Thang¹; ¹Chinese Flight Test Establishment, China
A high-precision and widely applicable equivalent method for calculating the flyover noise of engine power cutback take-off is proposed for civil jet airplane airworthiness. Flyover EPNL are calculated by constructed PNLTr history equivalently. A new PNLTr history construction procedure is presented. The method is validated by a civil jet airplane flight test data.