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How Jet Engines Work
Answers
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- Use the Internet to find the function of the main parts of a
jet engine and complete the table of jet engine parts shown
below.
(See
http://www.grc.nasa.gov/WWW/K-12/airplane/turbparts.html
)
JET ENGINE PARTS
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IMAGE OF PART
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PART FUNCTION
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Fan
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Accelerates air into the
jet engine.
Fans are used for efficiency.
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By-pass Duct
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Air flows through the
inlet through a duct and out the nozzle. The air leaves
the engine at a higher velocity than when it entered. The
passage through which the air travels is called the
by-pass duct.
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Compressor
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Consists of multiple rows
of blades which turn and make the air
denser.
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Combustor
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The compressed air flows
into the combustor where a spray of fuel is added and
ignited.
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Turbine
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The fast moving air causes
the blades of the turbine to turn, generating energy
which is used to power other parts of the
engine.
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Nozzle
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Air leaves the engine
through the nozzle where exhause pressure is matched with
atmospheric pressure.
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- Name the four main types of gas
turbines (http://www.grc.nasa.gov/WWW/K-12/airplane/trbtyp.html)
demonstrated below and give their functions.
NAME OF ENGINE
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DIAGRAM OF GAS TURBINE
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MAIN APPLICATION OF
ENGINE
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Turbojet
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Airliners and military
aircraft
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Turbo
fan
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Most common
type used in civil and military
aircraft
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Turbo prop
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Military
aircraft
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Turbo
shaft
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Helicopters, power and
pumping stations, hovercraft, and
ships
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Diagrams used in this table have the following
Copyright (C) 1995, 1996, 1997 Allison Engine Company. All rights
reserved
- The reaction produced by a jet engine is based on Newton's
Third law of motion.
- Explain Newton's law of motion referred to in Question 3.
For every action, there is an
equal and opposite reaction.
- Give two examples of applications of Newton's law of motion
other than jet engines.
Answers will vary.
Examples: a bouncing ball or one marble striking another
marble.
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Related Pages:
Standards
Activity
Worksheet
Propulsion Activity Index
Propulsion Index
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