Effect of Nozzle Configuration on Takeoff Noise of a Hypersonic Transport
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- SANO Norihisa
- 群馬大学大学院理工学専攻
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- TANAKA Kyohei
- 群馬大学大学院理工学専攻
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- ARAKI Mikiya
- 連絡先著者(Corresponding author):mikiya.araki@gunma-u. ac.jp 群馬大学大学院理工学専攻
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- KOJIMA Takayuki
- 群馬大学大学院理工学府知能機械創製部門
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- TAGUCHI Hideyuki
- 宇宙航空研究開発機構航空技術部門
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- GONZALEZ PALENCIA Juan C.
- 群馬大学大学院理工学府知能機械創製部門
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- SHIGA Seiichi
- 群馬大学大学院理工学府知能機械創製部門
Bibliographic Information
- Other Title
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- ノズル形態が極超音速航空機の離陸騒音に及ぼす影響
- ノズル ケイタイ ガ ゴク チョウオンソク コウクウキ ノ リリク ソウオン ニ オヨボス エイキョウ
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Abstract
Effect of nozzle configuration on the takeoff noise of a hypersonic transport is investigated based on small-scale nozzle experiments. In the Japan Aerospace Exploration Agency, the precooled turbojet (PCTJ) engine aimed at the hypersonic flight is under development. The takeoff noise of the full-scale vehicle is assessed before it is put into the operation using an acoustic simulation method. By matching the jet velocity and jet Mach number with the realistic PCTJ engine condition, the acoustic characteristics of the hypersonic nozzle are duplicated with a small-scale nozzle model. The jet noise database around the hypersonic nozzle is established through a number of experiments, and by taking into account 1) the nozzle scale, 2) the number of nozzles, 3) the direction of installation, 4) the measurement distance and angle based on the flight trajectory, and 5) the atmospheric absorption, the effective perceived noise level (EPNL) at the flyover point is calculated. It is shown that the nozzle configuration has a large impact on the takeoff noise, and that such an assessment could contribute to the improvement of the integration design of the vehicle.
Journal
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- JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
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JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 64 (1), 27-34, 2016
THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
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Details 詳細情報について
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- CRID
- 1390001204469500288
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- NII Article ID
- 130005124639
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- NII Book ID
- AA11307372
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- ISSN
- 24323691
- 13446460
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- NDL BIB ID
- 027064923
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed