uncleflo
Registered since September 28th, 2017
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Tag selected: blade.
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Wind Turbine Design
Saved by uncleflo on November 28th, 2018.
Primary objective in wind turbine design is to maximize the aerodynamic efficiency, or power extracted from the wind. But this objective should be met by well satisfying mechanical strength criteria and economical aspects. In this video we will see impact of number of blades, blade shape, blade length and tower height on wind turbine design. The next big factor which is affecting performance of wind turbine is shape and orientation of blade cross section. A moving machine experiences fluid flow at a different velocity than the actual velocity. It is called as relative or apparent velocity. Apparent velocity of flow is difference between actual flow and blade velocity. Absolute velocity of the flow is shown in first figure, while apparent velocity in the second figure. It is clear that apparent velocity of flow is vectorial difference between actual and blade velocity. The vector difference is shown in the first figure at a particular cross section. A rotating blade will experience an apparent velocity of flow.
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Bell flies into the future with first concept helicopter
Saved by uncleflo on February 11th, 2018.
Bell Helicopter isn't known for indulging in concept aircraft, but it's dipped its toes in the concept waters for the first time with the FCX-001. Unveiled at Heli-Expo 2017 in Dallas, Texas, the rotorcraft concept features an airframe crafted from sustainable materials, a hybrid power system, an artificial intelligence co-pilot, and morphing rotor blades that change to suit different flight conditions.
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