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En route noise of turboprop aircraft and their acceptability: Report of tests
| 题名： | En route noise of turboprop aircraft and their acceptability: Report of tests |
| 作者： | Held, Wolf |
| 关键词： | turbo；accept；route；report；noise；ests；propeller；craft；test；audible |
| 摘要： | The development of propfan-powered aircraft has been observed with great interest. It is obvious that during cruising flight, the aircraft powerplant (propellers) cause a noise clearly perceivable on the ground. It is the audible frequency spectrum of the propfan powerplants relative to the high tip speeds that presents the problem. A flight test was conducted on 30 April, 1989 at the Frankfurt Airport. Results of the test flight are present. |
| 报告类型： | 科技报告 |
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