Datenbestand vom 12. Juli 2018

Warenkorb Datenschutzhinweis Dissertationsdruck Dissertationsverlag Institutsreihen     Preisrechner

aktualisiert am 12. Juli 2018

ISBN 9783843936361

Euro 84,00 inkl. 7% MwSt

978-3-8439-3636-1, Reihe Luftfahrt

Jae Hun You
Aeroacoustic Characteristics of a Shrouded Helicopter Tail Rotor

224 Seiten, Dissertation Technische Universität München (2017), Softcover, B5

Zusammenfassung / Abstract

In order to reduce the aerodynamic noise emission from a shrouded tail rotor, an in-depth understanding of flow phenomena associated with the noise generation is necessary. For this purpose, a hybrid method combining unsteady Reynolds-averaged Navier-Stokes simulations with the Ffowcs Williams and Hawkings acoustic analogy is employed. The investigation exemplarily indicates that active flow control via boundary layer suction effectively eliminates the inlet flow distortion, thus reducing the far field noise level by about 5 dB in the forward flight condition.