Piston vs-jet engines

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Piston vs-jet engines

  1. 1. INTRODUCTION PISTON & JET ENGINES AS AIRCRAFT POWERPLANT
  2. 2. PISTON & JET ENGINES <ul><li>The last piston engines had better efficiency than the first jet engines used in aviation, yet jet engines have almost replaced piston engines as aircraft power plant not only in military aviation but also in civil aviation. </li></ul>
  3. 3. PISTON & JET ENGINES <ul><li>The piston engines and the jet engines used in aviation vastly differ in various constructional aspects. </li></ul><ul><li>D esign / performance factors decide the suitability of a particular type of aero-engine for selection in aircraft as the power plant. </li></ul>
  4. 4. PISTON & JET ENGINES <ul><li>Design criteria </li></ul><ul><ul><li>pay load </li></ul></ul><ul><ul><li>frontal area and size of aircraft </li></ul></ul><ul><ul><li>cost & speed of production </li></ul></ul><ul><ul><li>ease of maintenance </li></ul></ul><ul><ul><li>metallurgical requirements </li></ul></ul><ul><ul><li>working cycle </li></ul></ul><ul><ul><li>aircraft speed </li></ul></ul><ul><ul><li>operational flexibility </li></ul></ul><ul><ul><li>landing / take-off run </li></ul></ul><ul><ul><li>ease of control </li></ul></ul>
  5. 5. PISTON & JET ENGINES <ul><li>Performance criteria </li></ul><ul><ul><li> power-weight ratio </li></ul></ul><ul><ul><li> flight envelope </li></ul></ul><ul><ul><li>thermal efficiency </li></ul></ul><ul><ul><li> fuel consumption </li></ul></ul><ul><ul><li> endurance of flight (range & duration) </li></ul></ul><ul><ul><li>RPM </li></ul></ul><ul><ul><li>engine vibration </li></ul></ul><ul><ul><li>engine noise </li></ul></ul>
  6. 6. <ul><li>? </li></ul>Any Question

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