| タイトル | Investigation of the components of the NAL high Reynolds number two-dimensional wind tunnel. Part 4: Design, construction and performance of the exhaust silencer |
| 本文（外部サイト） | http://hdl.handle.net/2060/19870005804 |
| 著者（英） | Kayaba, S.; Sakakibara, S.; Sato, M.; Miwa, H. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1986-09-01 |
| 言語 | eng |
| 内容記述 | Presented is a description of the design construction and performance of the exhaust silencer for the NAL high Reynolds number two-dimensional transonic blow down wind tunnel, which was completed in October 1979. The silencer is a two-storied construction made of reinforced concrete, 40 m. long, 10 m. wide and 19 m. high and entirely enclosed by thick concrete walls. The upstream part of the first story, particularly, is covered with double walls, the thickness of the two walls being 0.3 m. (inner wall) and 0.2 m. (outer wall), respectively. A noise reduction system using three kinds of parallel baffles and two kinds of lined bends is adopted for the wind tunnel exhaust noise. |
| NASA分類 | RESEARCH AND SUPPORT FACILITIES (AIR) |
| レポートNO | 87N15237
NASA-TM-88513
NAS 1.15:88513
TR-606-PT-4 |
| 権利 | No Copyright |
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