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propellers    音标拼音: [prəp'ɛlɚz]
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  • Propeller - Wikipedia
    Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air The blades are shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid [2]
  • How do propellers work? - Explain that Stuff
    An easy-to-understand introduction to how propellers work, why they're angled and twisted, and how ship and plane propellers are different
  • Propellers | How Things Fly
    Think of a propeller as a spinning wing Like a wing, it produces lift, but in a forward direction—a force we refer to as thrust Its rotary motion through the air creates a difference in air pressure between the front and back surfaces of its blades In order for a propeller blade to spin, it usually needs the help of an engine
  • Propeller | Aircraft, Aviation, Design | Britannica
    propeller, device with a central hub and radiating blades placed so that each forms part of a helical (spiral) surface By its rotation in water or air, a propeller produces thrust owing to aerodynamic or fluid forces acting upon the blades and gives forward motion to a ship or aircraft
  • CATTO PROPELLERS
    Founded in 1975, Catto Propellers has been providing cutting edge technology and high-quality manufacturing services for close to 50 years We provide a wide variety of propellers for general aviation and specialize in custom propeller design and custom manufacturing to meet design requirements
  • Propeller, Types of Propellers and Construction of Propellers
    Marine propellers are made from corrosion-resistant materials as they are made operational directly in seawater which is a corrosion accelerator The materials used for making marine propellers are an alloy of aluminium and stainless steel
  • PROPELLER Definition Meaning - Merriam-Webster
    The meaning of PROPELLER is one that propels; especially : a device that consists of a central hub with radiating blades placed and twisted so that each forms part of a helical surface and that is used to propel a vehicle (such as a ship or airplane)
  • Propellers - Encyclopedia. com
    Propellers, which are essentially a series of twisted wings, or blades, connected to a central hub, are efficient energy transmission devices for those applications The blades strike the air or water at a certain angle, called the pitch, and create an area of low pressure in front of the propeller
  • Aircraft Propellers – Introduction to Aerospace Flight Vehicles
    Today, companies such as Hartzell, Sensenich, and McCauley produce highly efficient, advanced propellers made of composite materials, aerodynamically optimized airfoil sections, and sophisticated blade geometries with swept leading edges to minimize compressibility effects
  • Propeller Propulsion - NASA
    On this slide, we show pictures of a P-51 propeller-powered airplane from World War II and a propeller being tested in a NASA Glenn wind tunnel The details of propeller propulsion are very complex, but we can learn some of the fundamentals by using a simple momentum theory





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