33th Congress of the International Council of the Aeronautical Sciences

11 - Operations and Sustainment

EQUIVALENT CALCULATION METHOD OF FLYOVER NOISE LEVEL OF CUTBACK TAKE-OFF FOR CIVIL JET AIRPLANE AIRWORTHINESS CERTIFICATION

Y.-H. Song╣, X.-L. Zhang╣, Q.-H. Liu, Northwestern Polytechnical University, China; Y.-L. Thang╣; ╣Chinese 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.


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