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A Simple Method for Calculating LAE of Helicopter Noise.
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- Park Young-Min
- Dept. of Environmental and Sanitary Eng., Kyoto University
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- Takagi Koichi
- Dept. of Environmental and Sanitary Eng., Kyoto University
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- Matsui Toshihito
- Dept. of Hygiene, Asahikawa Medical College
Bibliographic Information
- Other Title
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- ヘリコプター騒音のＬＡＥの簡易予測方法
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Description
We considered a method for calculating the sound exposure level (LAE) of helicopter noise. It was assumed that helicopters have no directivity and that the propagation of sound can be expressed in a simple function of distance from an observation point to a sound source. We derived a formula for LAE by integrating the sound energy along a finite or an infinite flight segment. And we classified the value of power level into three groups by the maximum takeoff weight. The values calculated from the formula agree with the results of test flights in which three types of helicopters each took three moving operations of approach, takeoff and level flyover.
Journal
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- The Journal of the INCE of Japan
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The Journal of the INCE of Japan 20 (6), 385-391, 1996
The Institutew of Noise Control Engineering of Japan
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Details 詳細情報について
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- CRID
- 1390001204767295488
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- NII Article ID
- 130003656908
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- ISSN
- 18837506
- 03868761
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed
