1. UNIVERSITY OF WEST BOHEMIA FACULTY OF MECHANICAL ENGINEERING DEPARTMENT OF POWER SYSTEM ENGINEERING Ratkovská Katarína

2. JET ENGINES

3. HISTORY 17.12.1903 Orvill Wright and Wilburom Wright - first controlled flight

4. 1935 Frank Whitley - patented principle of jet engines 27.8.1939 Hans von Ohain - HeS – 3B jet engine W - 1

5. He - 178

6. TYPICAL ENGINE CUTS 0 – 1 engine intake 1 – 2 compressor 2 – 3 main combustion chamber 3 – 4 gas turbine 4 – 5 exhaust system

7. VK 1 engine with radial compressor

8. RD 33

9. MiG-29

10. BASIC PARAMETERS

13. Turboprop engine TP 100

14. TS - 21 - Turboshaft engine with free gas turbine. - It is starter of R-27F2M-300 engines.

15. Mig 23 - FLOGGER

19. COMPRESSOR TYPES Centrifugal flow compressors

20. AXIAL FLOW COMPRESSORS

22. THERMAL CYCLE Jet engines are reactive engines witch works with atmospheric air. Purpose of air in this case is: - Basic component of working media in thermodynamic cycle - Oxygen included in air is used during chemical reaction of burning - Accelerated air (in case of engines with direct reaction) create trust

23. SfJE - Ideal thermal cycle

24. SfJE with afterburner – ideal thermal cycle

25. WORK OF IDEAL THERMAL CYCLE

26. In p-V diagram In T-s diagram WORK OF IDEAL THERMAL CYCLE

27. Ideal expansion work of gas:

28. EFFICIENCY OF IDEAL CYCLE - SfTJE

30. WORK OF IDEAL THERMAL CYCLE - SfTJE

31. CONCLUSION

32. DISCUSSION QUESTIONS