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  2. Turbine blade - Wikipedia

    en.wikipedia.org/wiki/Turbine_blade

    The turbine blades have a golden colour in this engine cutaway. A turbine blade is a radial aerofoil mounted in the rim of a turbine disc and which produces a tangential force which rotates a turbine rotor. [2] Each turbine disc has many blades. [3] As such they are used in gas turbine engines and steam turbines.

  3. Hamilton Standard - Wikipedia

    en.wikipedia.org/wiki/Hamilton_Standard

    In the early 1930s, Frank W. Caldwell of Hamilton Standard led a team that developed a variable-pitch propeller, using hydraulic pressure and centrifugal force to change the angle of attack of the blades. Caldwell received the 1933 Collier Trophy for this advance in flight propulsion. Later advances included full-feathering and reversible ...

  4. Retreating blade stall - Wikipedia

    en.wikipedia.org/wiki/Retreating_blade_stall

    Retreating blade stall is a hazardous flight condition in helicopters and other rotary wing aircraft, where the retreating rotor blade has a lower relative blade speed, combined with an increased angle of attack, causing a stall and loss of lift. Retreating blade stall is the primary limiting factor of a helicopter's never exceed speed, V NE. [1]

  5. Vertical-axis wind turbine - Wikipedia

    en.wikipedia.org/wiki/Vertical-axis_wind_turbine

    The world's tallest vertical-axis wind turbine, in Cap-Chat, Quebec Vortexis schematic Vertical axis wind turbine offshore. A vertical-axis wind turbine (VAWT) is a type of wind turbine where the main rotor shaft is set transverse to the wind while the main components are located at the base of the turbine.

  6. X-Acto - Wikipedia

    en.wikipedia.org/wiki/X-Acto

    An X-Acto knife equipped with a "Number 2" blade Parts of an X-Acto knife from left to right: (1) handle, (2) collar, (3) collet, (4) blade. An X-Acto knife is a blade mounted on a pen-like aluminum body. A knurled collar loosens and tightens an aluminum collet with one slot, which holds a replaceable blade.

  7. Glossary of leaf morphology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_leaf_morphology

    Chart illustrating leaf morphology terms. The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1]

  8. Blade: Trinity - Wikipedia

    en.wikipedia.org/wiki/Blade:_Trinity

    Vampire leader Danica Talos has framed Blade for numerous murders, and alongside a team of rogue vampire hunters he must fight his most challenging enemy yet, Dracula. Blade: Trinity was released in the United States on December 8, 2004. The film grossed $132 million at the box office worldwide on a budget of $65 million and received mostly ...

  9. 2020 United States Olympic trials (wrestling) - Wikipedia

    en.wikipedia.org/wiki/2020_United_States_Olympic...

    The 2020 United States Olympic Team Trials for wrestling were held at the Dickies Arena of Fort Worth, Texas, on April 2–3, 2021. [1] This event determined the representative of the United States of America for the 2020 Summer Olympics at each Olympic weight class. [2]

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