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EASA Part 66 Module 15.6 : Turbine

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EASA Part 66 Module 15.6 : Turbine

  1. 1. 15.6 TURBINE SECTION http://part66.blogspot.com/
  2. 2. PURPOSE • To drive the compressor • Absorb a high proportion of energy of gas stream and converting into torque.
  3. 3. TYPE OF TURBINE 1.Impulsive type 2.Reaction type 4. Radial Inflow type 3.Impulsive/reaction
  4. 4. TURBINE ATTACHMENT Low Pressure Attachment High Pressure Attachment
  5. 5. BLADE TO DISK ATTACHMENT
  6. 6. COOLING TURBINE BLADE
  7. 7. NOZZLE GUIDE VANE • Direct airflow to turbine blade • Convert pressure energy into kinetic energy • Air flow become spin and swirl
  8. 8. BLADE STRESS AND CREEP • Creep is due to blade grow in length due to high temperature and centrifugal force(stress) • Stretch of blade occur in 3 stage : – 1st stage: rapid extention and decrease – 2nd stage : Constant rate of expansion – 3rd stage : Rapid extention and failure occur • Improve grain structure and properties can improve service life

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