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Author: Oleksandr Zaporozhets
Publisher: CRC Press
ISBN: 0203888820
Category : Technology & Engineering
Languages : en
Pages : 432
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Book Description
Aircraft noise has adverse impacts on passengers, airport staff and people living near airports, it thus limits the capacity of regional and international airports throughout the world. Reducing perceived noise of aircraft involves reduction of noise at source, along the propagation path and at the receiver. Effective noise control demands highly s
Author: Oleksandr Zaporozhets
Publisher: CRC Press
ISBN: 0203888820
Category : Technology & Engineering
Languages : en
Pages : 432
Get Book Here
Book Description
Aircraft noise has adverse impacts on passengers, airport staff and people living near airports, it thus limits the capacity of regional and international airports throughout the world. Reducing perceived noise of aircraft involves reduction of noise at source, along the propagation path and at the receiver. Effective noise control demands highly s
Author:
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 124
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Book Description
Methods of predicting airframe noise generated by aircraft in flight under nonpowered conditions are discussed. Approaches to predictions relying on flyover data and component theoretical analyses are developed. A nondimensional airframe noise spectrum of various aircraft is presented. The spectrum was obtained by smoothing all the measured spectra to remove any peculiarities due to airframe protrusions, normalizing each spectra by its overall sound pressure level and a characteristics frequency, and averaging the spectra together. A chart of airframe noise sources is included.
Author: John P. Raney
Publisher:
ISBN:
Category :
Languages : en
Pages : 44
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Book Description
Author: John P. Raney
Publisher:
ISBN:
Category : Airplane sounds
Languages : en
Pages : 24
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Book Description
Author:
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 87
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Book Description
Author: Martin R. Fink
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 135
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Book Description
Author: Robert G. Rackl
Publisher: BiblioGov
ISBN: 9781289254247
Category :
Languages : en
Pages : 144
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Book Description
This report contains the following information: 1) a review of airframe noise research performed under NASA's Advanced Subsonic Transport (AST) program up to the year 2000, 2) a comparison of the year 1992 airframe noise predictions with those using a year 2000 baseline, 3) an assessment of various airframe noise reduction concepts as applied to the year 2000 baseline predictions, and 4) prioritized recommendations for future airframe noise reduction work. NASA's Aircraft Noise Prediction Program was the software used for all noise predictions and assessments. For future work, the recommendations for the immediate future focus on the development of design tools sensitive to airframe noise treatment effects and on improving the basic understanding of noise generation by the landing gear as well as on its reduction.
Author: Kingo J. Yamamoto
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 96
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722171322
Category :
Languages : en
Pages : 92
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Book Description
The objective of this study is to evaluate the accuracy and adequacy of current airframe noise prediction methods using available airframe noise measurements from tests of a narrow body transport (DC-9) and a wide body transport (DC-10) in addition to scale model test data. General features of the airframe noise from these aircraft and models are outlined. The results of the assessment of two airframe prediction methods, Fink's and Munson's methods, against flight test data of these aircraft and scale model wind tunnel test data are presented. These methods were extensively evaluated against measured data from several configurations including clean, slat deployed, landing gear-deployed, flap deployed, and landing configurations of both DC-9 and DC-10. They were also assessed against a limited number of configurations of scale models. The evaluation was conducted in terms of overall sound pressure level (OASPL), tone corrected perceived noise level (PNLT), and one-third-octave band sound pressure level (SPL). Yamamoto, Kingo J. and Donelson, Michael J. and Huang, Shumei C. and Joshi, Mahendra C. Unspecified Center...
Author: W. E. Zorumski
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 308
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Book Description
