국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	System Design of the Renewed Transonic Flutter Testing Facility at NAL
저자	Takao KIKUCHI, Hiroshi EJIRI, Masato TAMAYAMA, Toshiyuki MORITA, Jiro NAKAMICHI
Keyword	blowdown transonic wind tunnels; Renewal Transonic Flutter Testing Facility
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001401.pdf?id=NALTR0001401
보고서번호	NAL TR-1401
발행년도	2000.01
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	This is a report on the renewal of the Transonic Flutter Testing Facility (Flutter Wind Tunnel) at NAL which was conducted between FY1993 - FY1996. The report consists of three parts with a total of six chapters and four appendices. Part I consists of Chapters 1, 2, 3 and 4, which provide an outline of the performance of the old as well as the new system. Chapter 2 provide an outline of the old system which was constructed in 1959. The concept design of the new system was produced by improving the basic design of the old system. Chapter 3 describes the purposes of the renewal, and the specifications and plans for the new system. The major aims were to reduce the turbulence of the flow in the tunnel and to improve outdated hard ware. Specifications aimed to use the old wind tunnel structures and concept as much as possible. The proposed specifications are summarized. Chapter 4 describes the design of the new system performance. Performance and utility concerns are focus on the view point of clients. PART II corresponds to Chapter 5, and dexcribes the design concept and technical investigations concerning various issues in the renewal design, including the design of the pressure valve, high pressure tubes, chambers, test section and prinum chamber. The design of these components takes into account not only aerodynamics but also structural dynamics factors. PART III consists of Chapter six and four appendices, and explains the measurement systems of the present facility. While the measurement system of the tunnel is beyond the scope of the renewal, it inevitably appears in this report. The four appendices are attached to aid understanding of the design routines of the present wind tunnel, and are entitled Appendix I Numerical Wind Tunnel Model Appendix II pressure Losses in the High Pressure Tubes Appendix III Method of Feedforward Control used in the new system and Appendix IX alibration of Pressure as a result of the present studies, the renovation of the flutter testing facility was made possible by improvements in flow quality and renewal of hard ware bringing the new system up to a standard of performance as high as that of modern wind tunnels around the world. The authors hope that this report will be of assistance to users and clients of the wind tunnel in the future.