Interior Noise Prediction Methodology: ATDAC Theory and Validation PDF Download
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Author:
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Category :
Languages : en
Pages : 54
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 54
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722316792
Category :
Languages : en
Pages : 50
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The Acoustical Theory for Design of Aircraft Cabins (ATDAC) is a computer program developed to predict interior noise levels inside aircraft and to evaluate the effects of different aircraft configurations on the aircraft acoustical environment. The primary motivation for development of this program is the special interior noise problems associated with advanced turboprop (ATP) aircraft where there is a tonal, low frequency noise problem. Prediction of interior noise levels requires knowledge of the energy sources, the transmission paths, and the relationship between the energy variable and the sound pressure level. The energy sources include engine noise, both airborne and structure-borne; turbulent boundary layer noise; and interior noise sources such as air conditioner noise and auxiliary power unit noise. Since propeller and engine noise prediction programs are widely available, they are not included in ATDAC. Airborne engine noise from any prediction or measurement may be input to this program. This report describes the theory and equations implemented in the ATDAC program. Mathur, Gopal P. and Gardner, Bryce K. Unspecified Center NAS1-18037; RTOP 535-03-11-03...
Author:
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Category : Aeronautics
Languages : en
Pages : 1572
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Author:
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Category : Aeronautics
Languages : en
Pages : 712
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A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Author:
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Category : Science
Languages : en
Pages : 684
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Author:
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Category :
Languages : en
Pages : 706
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ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1400
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 548
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ISBN:
Category : Shock (Mechanics)
Languages : en
Pages : 380
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 488
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