Second Airframe Division, National Aerospace Laboratory(NAL)
First Airframe Division, National Aerospace Laboratory(NAL)
First Airframe Division, National Aerospace Laboratory(NAL)
出版者
航空宇宙技術研究所
出版者（英）
National Aerospace Laboratory(NAL)
雑誌名
航空宇宙技術研究所報告
雑誌名(英)
Technical Report of National Aerospace Laboratory TR-643
巻
643
ページ
14
発行年
1981-02
抄録（英）
An experimental investigation has been conducted on the transonic flutter characteristics of low aspect ratio thin sweptback all-moving tail surface models, which were supported by a simulated fuselage beam. These experiments were conducted in the NAL 60cm×60cm transonic blowdown wind tunnel for flutter testing, at Mach numbers from 0.873 to 1.129. The tail surface has sweptback angles of 42.5deg at the leading edge and 10deg at the trailing edge, an aspect ratio of 1.394, and a taper ratio of 0.318. The wing models have been supported by the narrow width at the root. Some effects of an added mass at the leading edge of the wing tip on the flutter characteristics were also studied. Added mass improved the transonic flutter characteristics. It is concluded that the flutter boundaries for the tail surface models were obtained, and that the flutter boundaries expressed by the experimental flutter speed coefficients are characterized by having a minimum value at around Mach number 1.0 in the range of Mach numbers used.
An Experimental Investigation on Transonic Flutter Characteristics of Low Aspect-Ratio Sweptback All-Moving Horizontal Tail Surface Modesl
naltr00643.pdf
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