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Course: Aeronautics 4 AVT2002

University: Florida Institute of Technology.

Homework 1

1. What is the difference between detonation and preignition? Why does running

with a richer mixture help reduce the likelihood of either occurring?

- Detonation is the explosion of the air/fuel mixture inside the cylinder. As

opposed of the normal even burning. Another abnormal combustion is the pre-

ignition, where the air/fuel mixture ignites before prior to the timed ignition by

the sparkplugs. Running with a slight richer mixture generally will cool the

engine. So the heat that likely cause detonation or preignition would not be a

probable cause here. Because the unburned fuel will absorb the heat in the

cylinders.

2. What is the benefit of using more advanced engine monitoring systems, such as

glass cockpit displays? Which engine monitoring system do you personally

prefer, round steam-gauges or a glass display?

- More advanced engine instrumentation in the glass cockpit give's better

monitoring for each cylinders and temperatures. Also, more accurate readings

for the engine. That will make this type of displays more safer and will reduce

the risk of losing an engine mid-air. Glass display for sure!

3. During the portion of the video where the narrator was talking about being

suspicious of your engine, the camera was focused on the oil gauge. What

abnormality was occurring with the oil?

- Engine oil pressure low and high temperature. The probable cause is there is

an oil leak.

4. The video said that after seeing something suspicious on your engine instruments,

you should land as soon as it is safe and practical. What's the difference between

landing as soon as possible and landing as soon as practical? Give an example

that would make you land as soon as practical and another example where you'd

want to land as soon as possible.

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Course: Aeronautics 4 AVT2002 University: Florida Institute of Technology. Homework 1 1. What is the difference between detonation and preignition? Why does running with a richer mixture help reduce the likelihood of either occurring? - Detonation is the explosion of the air/fuel mixture inside the cylinder. As opposed of the normal even burning. Another abnormal combustion is the preignition, where the air/fuel mixture ignites before prior to the timed ignition by the sparkplugs. Running with a slight richer mixture generally will cool the engine. So the heat that likely cause detonation or ...
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