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Engines and Motors

Engines and Motors. Part - 2. Engines and Motors. Turbines Rocket Steam. Turbine Engines. In all cases, something (a force) spins the turbine. Background Steam Water Wind. Gas Turbine / Jet Engines. In a gas turbine a pressurized gas spins the turbine. Gas Turbine / Jet Engines.

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Engines and Motors

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  1. Engines and Motors Part - 2

  2. Engines and Motors • Turbines • Rocket • Steam

  3. Turbine Engines • In all cases, something (a force) spins the turbine. • Background • Steam • Water • Wind

  4. Gas Turbine / Jet Engines • In a gas turbine a pressurized gas spins the turbine.

  5. Gas Turbine / Jet Engines • The engine produces its own pressurized gas, and it does this by burning something like propane, natural gas, kerosene or jet fuel. • The heat that comes from burning the fuel rapidly expands the exhaust gasses, and the high-speed rush of this hot air spins the turbine. • Helicopter Engine

  6. Gas Turbine / Jet Engines • Advantages: • Excellent Power to Weight Ratio • Small Size • Disadvantages: • EXPENSIVE! • Prefer a constant load

  7. External Combustion Engines • Steam Engines • Rocket Engines

  8. Steam Engines • Steam engines were the first engine type to see widespread use. • Thomas Newcomen in 1705 • Used to pump water from coal mines along sea shore

  9. Steam Engines • Steam engines powered all early locomotives, steam boats and factories, and therefore acted as the foundation of the industrial revolution.

  10. Steam Engines

  11. Rocket Engines • Rocket engines are reaction engines. • The "strength" of a rocket engine is called its thrust. Thrust is measured in "pounds of thrust"

  12. Rocket Engines – 2 Types • Solid Fuel • Liquid Fuel

  13. Rocket Engines-Solid Fuel • Solid-fuel rocket - first engines created by man. • Invented in China around 1232

  14. Rocket Engines – Solid Fuel • Solid-fuel rocket engines have three important advantages: • Simplicity • Low Cost • Safety • They also have two disadvantages: • Thrust cannot be controlled • Once ignited, the engine cannot be stopped or restarted

  15. Rocket Engines-Liquid Propellant Rockets • Robert Goddard-1926 • He also worked on and solved a number of fundamental problems in rocket engine design, including pumping mechanisms, cooling strategies and steering arrangements.

  16. Rocket Engines-Liquid Propellant Rockets • Advantages: • Shut Down/Restart • Can “Throttle” • Higher Performance • Disadvantages: • Very Complex • Very Expensive

  17. Electric Motors • 1st practical electric motors from Emily and Thomas Davenport in 1837 • Ran @ 600 RMP, and powered machine tools and a printing press

  18. Electric Motors • Electric Motors: • D/C • A/C

  19. Electric Motors

  20. Electric Motors • Electric Motor in Action

  21. Hybrids • Any vehicle is hybrid when it combines two or more sources of power. • Examples: mo-ped, car, locomotive, sail boat

  22. Hybrids • Hybrid Cars • Electric Drag Racing

  23. The End

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