Application of an active device for helicopter noise reduction in JAXA
Application of an active device for helicopter noise reduction in JAXA
INVITED PAPER
- Neue Suche nach: Shigeru Saito
- Neue Suche nach: Noboru Kobiki
- Neue Suche nach: Yasutada Tanabe
- Neue Suche nach: Shigeru Saito
- Neue Suche nach: Noboru Kobiki
- Neue Suche nach: Yasutada Tanabe
Important issues in noise problems for current helicopters are described. An active tab (AT) was developed as a new active device for noise/vibration reduction under research cooperation between Japan Aerospace Exploration Agency (JAXA) and Kawada Industries, Inc. The wind tunnel test was conducted in order to investigate the effectiveness of the AT on the aeroacoustic characteristics of a helicopter. From the wind tunnel test, the capability of reducing blade vortex interaction (BVI) noise by an AT was verified. A new control law using instantaneous pressure change on a blade during BVI phenomena was introduced and applied to the wind tunnel testing. This new control law shows reasonable controllability for helicopter noise reduction. Furthermore, in order to analyze noise characteristics, the advanced computational fluid dynamics (CFD) code named JAXA_ov3d was developed in JAXA and extended to include CFD–CSD (computational structure dynamics) coupling by using the beam theory for blade deformation.
Dokumentinformationen
Application of an active device for helicopter noise reduction in JAXA
INVITED PAPER
Application of an active device for helicopter noise reduction in JAXA
Fluid Dynamics Research ; 42 , 1 ; 015006
2010-02-01
24 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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