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Jet Engines

Jet Engines. Jimmy Luo. History. History. Overview. How It Works. Jet Engines. Current Applications. History. Aeolipile invented by Heron of Alexandria (first reaction engine ) Jet Propulsion took off with the invention of the rocket by the Chinese in the 13 th Century

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Jet Engines

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  1. Jet Engines Jimmy Luo

  2. History • History Overview • How It Works Jet Engines • Current Applications

  3. History • Aeolipile invented by Heron • of Alexandria (first reaction engine) • Jet Propulsion took off with the • invention of the rocket by the • Chinese in the 13thCentury • HeinkelHe 178 – first practical jet to fly on 27.08.1939 Jet Engines

  4. How it works • Newton’s Third Law: For every action (i.e. exhaust gases) there is an equal and opposite reaction (i.e. Thrust). • Front Fan sucks cold air into the engine • Secondary fan compresses the air, increasing pressure 8x • Liquid fuel is mixed with air and ignited. (1650 F) • Exhaust exit through turbine blades, which turns the compressor and fan. • Gases exit through exhaust nozzle. (1300 mph) Jet Engines

  5. How it works Jet Engines • High-Bypass Turbofan Engine Low-Bypass Turbofan Engine

  6. Applications • Commercial Jets powered by high-bypass ratio turbofan engines. • Combat Aircraft powered by low-bypass ratio turbofans • Gas turbine engines in helicopters, powerplants, M1-Abram Tank Jet Engines

  7. Applications Jet Engines • Lockheed Martin F-35 Lightning II, derivative of the X-35 from the Joint Strike Fighter (JSF) Program

  8. Applications Jet Engines • Below: GE/RR F136 Engine • Above: F-35B (STOVL) Engine

  9. References • http://en.wikipedia.org/wiki/F-35_Lightning_II • http://en.wikipedia.org/wiki/Turbofan • http://en.wikipedia.org/wiki/Jet_engine • http://www.jpl.nasa.gov/ Jet Engines

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