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Titlebook: Natural Laminar Flow and Laminar Flow Control; R. W. Barnwell,M. Y. Hussaini Book 1992 Springer-Verlag New York, Inc. 1992 experiment.flow

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發(fā)表于 2025-3-21 18:50:53 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
書目名稱Natural Laminar Flow and Laminar Flow Control
編輯R. W. Barnwell,M. Y. Hussaini
視頻videohttp://file.papertrans.cn/662/661782/661782.mp4
叢書名稱ICASE NASA LaRC Series
圖書封面Titlebook: Natural Laminar Flow and Laminar Flow Control;  R. W. Barnwell,M. Y. Hussaini Book 1992 Springer-Verlag New York, Inc. 1992 experiment.flow
描述Research on laminar flow and its transition to turbulent flow has been an important part of fluid dynamics research during the last sixty years. Since transition impacts, in some way, every aspect of aircraft performance, this emphasis is not only understandable but should continue well into the future. The delay of transition through the use of a favorable pressure gradient by proper body shaping (natural laminar flow) or the use of a small amount of suction (laminar flow control) was recognized even in the early 1930s and rapidly became the foundation of much of the laminar flow research in the U.S. and abroad. As one would expect, there have been many approaches, both theoretical and experimental, employed to achieve the substantial progress made to date. Boundary layer stability theories have been formu- lated and calibrated by a good deal of wind tunnel and flight experiments. New laminar now airfoils and wings have been designed and many have been employed in aircraft designs. While the early research was, of necessity, concerned with the design of subsonic aircraft interest has steadily moved to higher speeds including those appropriate to planetary entry. Clearly, there hav
出版日期Book 1992
關(guān)鍵詞experiment; flow; laminar flow; philosophy; transport; wave; wind; fluid- and aerodynamics
版次1
doihttps://doi.org/10.1007/978-1-4612-2872-1
isbn_softcover978-1-4612-7703-3
isbn_ebook978-1-4612-2872-1Series ISSN 0939-2483
issn_series 0939-2483
copyrightSpringer-Verlag New York, Inc. 1992
The information of publication is updating

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發(fā)表于 2025-3-21 21:48:25 | 只看該作者
,Laminar Flow Flight Experiments — A Review,s entitled “Flight Experiments on the Boundary Layer,” dealt specifically with the first British flight observations of transition of the boundary layer from laminar to turbulent flow. These data, Jones concluded, showed that it is possible to retain a laminar layer over at least one-third of the wh
板凳
發(fā)表于 2025-3-22 03:14:20 | 只看該作者
Flight Research on Natural Laminar Flow Applications,achieved passively, that is, by design of surface shapes to produce favorable pressure gradients. However, it is not without its challenges and limitations. This chapter describes the significant challenges to achieving and maintaining NLF and documents certain of the limitations for practical appli
地板
發(fā)表于 2025-3-22 05:48:40 | 只看該作者
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發(fā)表于 2025-3-22 08:59:19 | 只看該作者
Design Philosophy of Long Range LFC Transports with Advanced Supercritical LFC Airfoils, any point on earth at high subsonic speeds with relatively large payloads without refuelling. Figure 1 shows as an example a 180,000 kg take-off gross weight LFC transport airplane with 50,000 kg payload (250 passengers plus cargo) cruising at ..= 0.83. Cruise lift to drag ratios of 39.4 appear fea
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發(fā)表于 2025-3-22 15:05:54 | 只看該作者
Wave Interaction Theory and LFC,, and Tollmien-Schlichting instability mechanisms which can all cause transition to turbulence in many flows of practical importance. In the LFC context, it is important for us to know whether the simultaneous presence of these mechanisms can cause the premature onset of transition through their mut
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發(fā)表于 2025-3-22 17:34:54 | 只看該作者
Supersonic Laminar Flow Control, takeoff and landing (CTOL) transport (and subsequent derivatives). This extraordinary marriage of the swept wing and jet engines revolutionized long-haul passenger transport and supplanted steam ships trains and more recently even eroded the lower end of the long-haul transport spectrum buses. The
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發(fā)表于 2025-3-22 23:28:44 | 只看該作者
The Langley 8-ft Transonic Pressure Tunnel Laminar-Flow-Control Experiment,ve was to provide aerodynamic and controls technology that would enable the design of commercial transports with substantially better fuel efficiency than those in service at the time. This program had a number of facets, most of which were centered on supercritical airfoil/wing and winglet technolo
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發(fā)表于 2025-3-23 04:47:28 | 只看該作者
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