タイトル(掲載誌)航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-1081
一般注記It is generally recognized that airframe noise becomes a significant contributor to overall aircraft noise under landing conditions. Airframe noise is considered to be the sound radiated aerodynamically as a result of complex interplay between local flows and cofigurations that intrude or are recessed or deployed over the lifting surfaces and fuselage. The scale model acoustic testing of landing gears done by the authors revealed that the cavity noise was predominant in sound sources of landing device. As the succeeding phase of the test, here we report a study made to determine the sound generation mechaism and to reduce the sound level of the cavity noise. It is observed that an array of fins attached on the leading edge of the cavity offered a reduction of 7~8 dB in the sound pressure levels.
資料番号: NALTR1081000
レポート番号: NAL TR-1081
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=45340&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ