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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Wind_tunnel> ?p ?o }

• Wind_tunnel abstract "A wind tunnel is a tool used in aerodynamic research to study the effects of air moving past solid objects. A wind tunnel consists of a tubular passage with the object under test mounted in the middle. Air is made to move past the object by a powerful fan system or other means. The test object, often called a wind tunnel model is instrumented with suitable sensors to measure aerodynamic forces, pressure distribution, or other aerodynamic-related characteristics.The earliest wind tunnels were invented towards the end of the 19th century, in the early days of aeronautic research,when many attempted to develop successful heavier-than-air flying machines. The wind tunnel was envisioned as a means of reversing the usual paradigm: instead of the air standing still and an object moving at speed through it, the same effect would be obtained if the object stood still and the air moved at speed past it. In that way a stationary observer could study the flying object in action, and could measure the aerodynamic forces being imposed on it.The development of wind tunnels accompanied the development of the airplane. Large wind tunnels were built during the Second World War. Wind tunnel testing was considered of strategic importance during the Cold War development of supersonic aircraft and missiles.Later on, wind tunnel study came into its own: the effects of wind on man made structures or objects needed to be studied when buildings became tall enough to present large surfaces to the wind, and the resulting forces had to be resisted by the building's internal structure. Determining such forces was required before building codes could specify the required strength of such buildings and such tests continue to be used for large or unusual buildings.Still later, wind-tunnel testing was applied to automobiles, not so much to determine aerodynamic forces per se but more to determine ways to reduce the power required to move the vehicle on roadways at a given speed. In these studies, the interaction between the road and the vehicle plays a significant role, and this interaction must be taken into consideration when interpreting the test results. In an actual situation the roadway is moving relative to the vehicle but the air is stationary relative to the roadway, but in the wind tunnel the air is moving relative to the roadway, while the roadway is stationary relative to the test vehicle. Some automotive-test wind tunnels have incorporated moving belts under the test vehicle in an effort to approximate the actual condition, and very similar devices are used in wind tunnel testing of aircraft take-off and landing configurations.The advances in computational fluid dynamics (CFD) modelling on high speed digital computers has reduced the demand for wind tunnel testing. However, CFD results are still not completely reliable and wind tunnels are used to verify CFD predictions.".
• Wind_tunnel thumbnail Windkanal.jpg?width=300.
• Wind_tunnel wikiPageExternalLink 24212774.
• Wind_tunnel wikiPageID "38247".
• Wind_tunnel wikiPageLength "37165".
• Wind_tunnel wikiPageOutDegree "116".
• Wind_tunnel wikiPageRevisionID "704324939".
• Wind_tunnel wikiPageWikiLink 1,1,1,2-Tetrafluoroethane.
• Wind_tunnel wikiPageWikiLink Aerodynamics.
• Wind_tunnel wikiPageWikiLink Angle_of_attack.
• Wind_tunnel wikiPageWikiLink Arsenal_(Vienna).
• Wind_tunnel wikiPageWikiLink Aspect_ratio_(aeronautics).
• Wind_tunnel wikiPageWikiLink Automotive_design.
• Wind_tunnel wikiPageWikiLink Beam_Balance.
• Wind_tunnel wikiPageWikiLink Benjamin_Robins.
• Wind_tunnel wikiPageWikiLink Bernoullis_principle.
• Wind_tunnel wikiPageWikiLink Building_code.
• Wind_tunnel wikiPageWikiLink Car.
• Wind_tunnel wikiPageWikiLink Carl_Richard_Nyberg.
• Wind_tunnel wikiPageWikiLink Category:Aerodynamics.
• Wind_tunnel wikiPageWikiLink Category:Articles_containing_video_clips.
• Wind_tunnel wikiPageWikiLink Category:Wind_tunnels.
• Wind_tunnel wikiPageWikiLink Compressible_flow.
• Wind_tunnel wikiPageWikiLink Computational_fluid_dynamics.
• Wind_tunnel wikiPageWikiLink Concorde.
• Wind_tunnel wikiPageWikiLink De_Laval_nozzle.
• Wind_tunnel wikiPageWikiLink Doriot_Climatic_Chambers.
• Wind_tunnel wikiPageWikiLink Dynamic_pressure.
• Wind_tunnel wikiPageWikiLink Dynamic_similarity_(Reynolds_and_Womersley_numbers).
• Wind_tunnel wikiPageWikiLink European_Transonic_Wind_Tunnel.
• Wind_tunnel wikiPageWikiLink File:National_Advisory_Committee_for_Aeronautics_wind_tests_(1946).webm.
• Wind_tunnel wikiPageWikiLink Flugan.
• Wind_tunnel wikiPageWikiLink Flume.
• Wind_tunnel wikiPageWikiLink France.
• Wind_tunnel wikiPageWikiLink Francis_Herbert_Wenham.
• Wind_tunnel wikiPageWikiLink Freon.
• Wind_tunnel wikiPageWikiLink Froude_number.
• Wind_tunnel wikiPageWikiLink George_Cayley.
• Wind_tunnel wikiPageWikiLink Green_building.
• Wind_tunnel wikiPageWikiLink Gustave_Eiffel.
• Wind_tunnel wikiPageWikiLink Hydropower.
• Wind_tunnel wikiPageWikiLink Hypersonic_wind_tunnel.
• Wind_tunnel wikiPageWikiLink Impeller.
• Wind_tunnel wikiPageWikiLink Konstantin_Tsiolkovsky.
• Wind_tunnel wikiPageWikiLink Leadership_in_Energy_and_Environmental_Design.
• Wind_tunnel wikiPageWikiLink Lift_coefficient.
• Wind_tunnel wikiPageWikiLink List_of_wind_tunnels.
• Wind_tunnel wikiPageWikiLink Mach_number.
• Wind_tunnel wikiPageWikiLink Mechanical_fan.
• Wind_tunnel wikiPageWikiLink Modane.
• Wind_tunnel wikiPageWikiLink NASA.
• Wind_tunnel wikiPageWikiLink Nebulizer.
• Wind_tunnel wikiPageWikiLink ONERA.
• Wind_tunnel wikiPageWikiLink Osborne_Reynolds.
• Wind_tunnel wikiPageWikiLink Particle_image_velocimetry.
• Wind_tunnel wikiPageWikiLink Peenemünde.
• Wind_tunnel wikiPageWikiLink Physical_model.
• Wind_tunnel wikiPageWikiLink Piezoelectricity.
• Wind_tunnel wikiPageWikiLink Pitot_tube.
• Wind_tunnel wikiPageWikiLink Poul_la_Cour.
• Wind_tunnel wikiPageWikiLink Pressure-sensitive_paint.
• Wind_tunnel wikiPageWikiLink Pressure_belt.
• Wind_tunnel wikiPageWikiLink Pressure_measurement.
• Wind_tunnel wikiPageWikiLink Reynolds_number.
• Wind_tunnel wikiPageWikiLink Rocket-powered_aircraft.
• Wind_tunnel wikiPageWikiLink Royal_Aeronautical_Society.
• Wind_tunnel wikiPageWikiLink SpaceShipOne.
• Wind_tunnel wikiPageWikiLink Stall_(fluid_mechanics).
• Wind_tunnel wikiPageWikiLink Static_pressure.
• Wind_tunnel wikiPageWikiLink Sting_(fixture).
• Wind_tunnel wikiPageWikiLink Strobe_light.
• Wind_tunnel wikiPageWikiLink Subsonic_and_transonic_wind_tunnel.
• Wind_tunnel wikiPageWikiLink Sud_Aviation_Caravelle.
• Wind_tunnel wikiPageWikiLink Supersonic_wind_tunnel.
• Wind_tunnel wikiPageWikiLink Turbofan.
• Wind_tunnel wikiPageWikiLink Turbulence.
• Wind_tunnel wikiPageWikiLink Ultrasound.
• Wind_tunnel wikiPageWikiLink Unitary_Wind_Tunnel_Plan_Act.
• Wind_tunnel wikiPageWikiLink University_of_Manchester.
• Wind_tunnel wikiPageWikiLink STOL.
• Wind_tunnel wikiPageWikiLink Vertical_wind_tunnel.
• Wind_tunnel wikiPageWikiLink Viscosity.
• Wind_tunnel wikiPageWikiLink Vortex.
• Wind_tunnel wikiPageWikiLink Water_tunnel_(hydrodynamic).
• Wind_tunnel wikiPageWikiLink Weighing_scale.
• Wind_tunnel wikiPageWikiLink Whirling_arm.
• Wind_tunnel wikiPageWikiLink Wikt:laminar.
• Wind_tunnel wikiPageWikiLink Wind_engineering.
• Wind_tunnel wikiPageWikiLink Wind_turbine.
• Wind_tunnel wikiPageWikiLink World_War_II.
• Wind_tunnel wikiPageWikiLink Wright_Flyer.
• Wind_tunnel wikiPageWikiLink Wright_brothers.
• Wind_tunnel wikiPageWikiLink Wunibald_Kamm.
• Wind_tunnel wikiPageWikiLink Ötztal.
• Wind_tunnel wikiPageWikiLink File:Bundesarchiv_Bild_102-17158,_Deutsche_Versuchsanstalt_für_Luftfahrt.jpg.
• Wind_tunnel wikiPageWikiLink File:Cessna_182_model-wingtip-vortex.jpg.
• Wind_tunnel wikiPageWikiLink File:Fog_visualization.jpg.
• Wind_tunnel wikiPageWikiLink File:GIF_Flow_visualization.gif.
• Wind_tunnel wikiPageWikiLink File:Kirsten_wind_tunnel_05.jpg.
• Wind_tunnel wikiPageWikiLink File:Kirsten_wind_tunnel_08A.jpg.

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