A Method for Calculating Externally Blown Flap Noise PDF Download
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Author: Martin R. Fink
Publisher:
ISBN:
Category : Flaps (Airplanes)
Languages : en
Pages : 138
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Book Description
Author: Martin R. Fink
Publisher:
ISBN:
Category : Flaps (Airplanes)
Languages : en
Pages : 138
Get Book Here
Book Description
Author: Martin R. Fink
Publisher:
ISBN:
Category : Flaps (Airplanes)
Languages : en
Pages : 136
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Book Description
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 628
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Book Description
Author: Harvey H. Hubbard
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 616
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 150
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Book Description
Author: Martin R. Fink
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 88
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Book Description
Portions of a four-year analytical and experimental investigation relative to noise radiation from engine internal components in turbulent flow are summarized. Spectra measured for such airfoils over a range of chord, thickness ratio, flow velocity, and turbulence level were compared with predictions made by an available rigorous thin-airfoil analytical method. This analysis included the effects of flow compressibility and source noncompactness. Generally good agreement was obtained. This noise calculation method for isolated airfoils in turbulent flow was combined with a method for calculating transmission of sound through a subsonic exit duct and with an empirical far-field directivity shape. These three elements were checked separately and were individually shown to give close agreement with data. This combination provides a method for predicting engine internally generated aft-radiated noise from radial struts and stators, and annular splitter rings. Calculated sound power spectra, directivity, and acoustic pressure spectra were compared with the best available data. These data were for noise caused by a fan exit duct annular splitter ring, larger-chord stator blades, and turbine exit struts.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
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Author: Jeffrey Hilton Miles
Publisher:
ISBN:
Category : Flaps (Airplanes)
Languages : en
Pages : 78
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Book Description
