Beginner's
Guide to Propulsion
Turbojet Thrust Answers Answers will vary. Suggested answers are shown below:
1. What is another name for a jet engine? gas turbine engine 2. In the Turbojet Thrust diagram, the free stream air enters which engine part first? inlet 3. The air then flows into the compressor. 4. A compressor acts like rows of airfoils. 5. A compressor also acts like an electric fan. 6. Where is the best place to direct the air to make it turn? the center 7. What happens to the pinwheel? it spins 8. What happens to the movement of the pinwheel when the fan is turned off? it stops 9. What happens to the movement of the pinwheel when the fan is turned to a higher speed? it spins at a faster speed 10. Describe what you feel. air pushes against it 11. Write a sentence describing what the compressor does to the air in a turbojet. The compressor has tiny airfoils in it which turn as air flows through it and this results in an increased pressure. 12. Describe what happens in the burner. What is the ratio between fuel and air? 2 pounds of fuel is combined with every 100 pounds of air and is ignited 13. How is the action of the turbine like the action of your pinwheel? both have blades that create spin as air flows across them 14. Comparing the pinwheel to the turbine, what do you think happens to the speed at which the turbine spins as the speed of the air increases? the turbine will also spin faster 15. Trace the flow of air through the turbojet engine by listing its components in order. inlet, compressor, burner, turbine, nozzle 16. What important result is created by each of the following things happening? turbine turns provides power to turn the compressor |
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Curator: Tom.Benson@grc.nasa.gov Responsible Official: Kathy.Zona@grc.nasa.gov |