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The Impact of Volcanic Ash on Jet Engines

The Impact of Volcanic Ash on Jet Engines. By: Lanke Fu, Roberto Gandia , Lyndon Leung, and Sarah Provencher. The Problem. Volcanic Ash melts within the Engine’s Combustor and then sticks to the blades of the Turbine, causing Engine Failure

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The Impact of Volcanic Ash on Jet Engines

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  1. The Impact of Volcanic Ash on Jet Engines By: Lanke Fu, Roberto Gandia, Lyndon Leung, and Sarah Provencher

  2. The Problem • Volcanic Ash melts within the Engine’s Combustor and then sticks to the blades of the Turbine, causing Engine Failure • http://www.youtube.com/watch?v=sKM1dip0ZNo&feature=fvwrel

  3. Engine Structure • The Jet Engine Can be Modeled as a Typical Brayton Cycle

  4. Initial Project • Find Temperature Gradient of Jet Engine • Find the Melting Point of Glass at Different Temperatures and Pressures

  5. The Obstacles • Finding the Melting Point of Sand while Adjusting the Pressure is Impossible Given the Resources BU has and Our Skill Set He is probably the only person who is qualified to do what we wanted to do. Maybe we were being a bit ambitious.

  6. New Project! • Still find the Temperature Gradient, and then efficiencies of the Turbine and the Compressor as well as the overall thermal efficiency of the engine using the Jet Engine Lab provided • Scale the Model Jet Engine up to a full size Jet Engine • Find the Heat that needs to be taken away in order for the ash to not melt • Theorize and Analyze ways to take the Heat Away

  7. Results • Efficiency of the Compressor: 9.79% • Efficiency of the Turbine: 11.4 % • Overall Thermal Efficiency: 9.16% • Heat Needed to be Taken Away: 1090.37 kJ/kg

  8. But Where Did Those Results Come From? • Efficiencies were Calculated using the Jet Engine Lab Guide • The Heat Difference was a Bit More Complicated….

  9. How Can Heat Be Taken Away? • Two Ways • Remove Heat Input From Combustor • Put Some Sort of Cooling Device Between the Combustor and the Turbine • Why These Solutions Create more Problems

  10. Anything Else? • The Thermal Efficiency of the Model Jet Engine is Much Smaller than that of a Commercial Jet Engine (roughly 37%) • Why is that?

  11. Conclusions • Any Major Alteration Seriously Affects the Engine’s Ability to Preform • In Order to Fix this Problem, a Cooling Device must be made that Somehow does not Affect the Engine’s Efficiency, OR The Jet Engine has to be Redesigned

  12. Questions?

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