15.19 - Powerplant Installation

Question 1

What is the purpose of the engine firewall?

Answer 1

It is a barrier which prevents combustible fumes passing into the rear section and igniting in the exhaust section

Question 2

What is the purpose of the abradable lining?

Answer 2

To maintain fan tip clearance

Question 3

What loads does the forward engine mount transfer to the pylon?

Answer 3

Vertical, side and thrust loads

Question 4

What loads does the rear engine mount transfer to the pylon?

Answer 4

Verticals, side and torsion loads

Question 5

What are the two types of drains on a turbofan engine?

Answer 5

Controlled drains

Uncontrolled drains

Question 6

In the older style mechanical engine throttle controls, how is the high-pressure cock controlled in a single path and dual path system?

Answer 6

Single - combined with throttle

Dual - separate from throttle

Question 7

How many zones are there on an engine nacelle?

Answer 7

2

Cool section and hot section.

Question 8

What is the purpose of a blow-out door on an engine?

Answer 8

It prevents excess gas building up

Question 9

Where should fibrous metallic lining for noise suppression be used?

Answer 9

In the hot sections

Question 10

What is the purpose of the floating mount?

Answer 10

It allows for radial expansion of the engine casing