Results 101 to 110 of about 74,712 (235)
Study of a new airfoil used in reversible axial fans [PDF]
The characteristics of the reverse ventilation of axial flow are analyzed. An s shaped airfoil with a double circular arc was tested in a wind tunnel. The experimental results showed that the characteristics of this new airfoil in reverse ventilation are
Gu, Chuangang, Li, Chaojun, Wei, Baosuo
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Energy Science & EngineeringABSTRACT The increasing demand for energy in daily life and the finite nature of fossil fuel reserves have driven researchers worldwide to explore renewable energy sources such as wind energy. To optimize the performance and minimize energy losses in vertical wind turbines, parameters such as the airfoil's angle of attack, as well as ...
Reza Abbaspour +2 more
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Assessment of Airfoil Lightning Strikes Characterization on Aircraft in Dynamic Conditions
AtmosphereLightning is a long-gap high-current discharge event in nature, and its enormous discharge energy can cause structural damage to struck objects. Relevant studies have shown that aircraft in the air are exposed to a higher risk of lightning strikes than ...
Ning Yang +4 more
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Experimental measurements of the laminar separation bubble on an Eppler 387 airfoil at low Reynolds numbers [PDF]
An experimental investigation was conducted to measure the flow velocity in the boundary layer of an Eppler 387 airfoil. In particular, the laminar separation bubble that this airfoil exhibits at low Reynolds numbers was the focus. Single component laser
Cole, Gregory M., Mueller, Thomas J.
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Research progress on aerodynamic stealth design technology of aircraft
Hangkong gongcheng jinzhanAerodynamic stealth design is a key technology for aircraft to realize efficient combat in high-risk environments，and it has been a hot technology researched by aviation powers for a long time.
ZHAO Ke +5 more
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High Reynolds number tests of the CAST-10-2/DOA 2 transonic airfoil at ambient and cryogenic temper ature conditions [PDF]
The transonic airfoil CAST 10-2/DOA 2 was investigated in several major transonic wind tunnels at Reynolds numbers ranging from Re=1.3 x 10(exp 6) to 45 x 10(exp 6) at ambient and cryogenic temperature conditions.
Demurie, F. +3 more
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Wind tunnel model and method [PDF]
, 1974 The design and development of a wind tunnel model equipped with pressure measuring devices are discussed. The pressure measuring orifices are integrally constructed in the wind tunnel model and do not contribute to distortions of the aerodynamic surface.
Jackson, C. M., Jr., Summerfield, D. G.
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NASA research objectives and roles [PDF]
A chronology of airfoil development is presented in order to put the present NASA airfoil program in perspective. The impact of the NACA series airfoils is considered. Development of advanced analytical and experimental methods for the design and for the
Gessow, A.
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A new flow model for highly separated airfoil flows at low speeds [PDF]
An analytical model for separated airfoil flows is presented which is based on experimentally observed physical phenomena. These include a free stagnation point aft of the airfoil and a standing vortex in the separated region.
Naik, S. N., Zumwalt, G. W.
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Effect of Ice Formations on Section Drag of Swept NACA 63A-009 Airfoil with Partial-Span Leading-Edge Slat for Various Modes of Thermal Ice Protection [PDF]
The effects of primary and runback ice formations on the section drag of a 36 deg swept NACA 63A-009 airfoil section with a partial-span leading-edge slat were studied over a range of angles of attack from 2 to 8 deg and airspeeds up to 260 miles per ...
Gray, Vernon H., VonGlahn, Uwe H.
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