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Beginner's
Guide to Propulsion and EngineSim
Density
Answers
- Prediction of
mass of gas molecules in this classroom. Answers
will vary.
- A.
Mass of gas molecules in the classroom.
Answers will vary.
B.
Materials List:
One meter stick per group.
Density of air = 1.229 kg/meters cubed. (Info in BGP Air Properties
Definitions slide.)
D. Procedure:
Answers will vary but students should
list their steps in an orderly fashion and have ready a place to record
their measurements. Their procedure should demonstrate their understanding
of density = mass/volume.
E. Teacher Check:
The instructor should check that students
have thought out their steps before they proceed.
- A.
Answers
will vary.
Altitude
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Your Variable ______________kg/m3
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What is the
relationship between altitude and your variable, ________________?
Answers
will vary.
B.
How does this relationship relate to air density and to the functioning
of a gas turbine engine? Answers
will vary. Students should become aware that a gas turbine engine
needs gas molecules to manipulate to high velocities to create thrust
out the back of the engine. The engine uses Newton's third law of
motion, action-reaction. As gas molecules become scarce the engine's
ability to create thrust becomes more difficult.
C.
Reflection: Which atmospheric factors affect air density?
Altitude, temperature, and air
pressure.
D.
Start EngineSim to test your prediction. [Record the results
of your test in the table provided below.] Answers
will vary.
Altitude
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Engine
Performance
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Related Pages:
Standards
Worksheet
Activity
Propulsion Activity Index
Propulsion Index
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