15.19 Flashcards
What is a fireproof bulkhead also known as
A firewall
What does a nacelle do
It provides the engine wit aerodynamic smoothness and protects the engine components against air pressure or FOD
Nacelle usually has :
Air inlet cowling Fan cowling Fan reverser cowling Core cowling Exhaust nozzle
Air inlet cowling has the following
A nose lip
Outer and inner barrel
Forward and aft bulkhead
A fan reverser cowling does what
It guides air back in the other direction to resultantly slow the aircraft down
The fan air passes through what ducts and why do they get their name
C ducts and because of their shape
Are two fire protection features
Fire protective coating
Fire seal
The core cowl is always a hot part of the engine so it is always made out of metal
.
What are The exhaust nozzle components
Exhaust sleeve
Centre body
Acoustic panels are
Panels which absorb noise and are made out of metal or composite facing skin supported on a honeycomb structure with a solids backing skin bonded to the metal duct or casing.
Acoustic panels are usually an inch thick
.
Engines are connected to the pylons at two points front and aft
.
When installed pipes must be a minimum of how much away from the structure
6mm (0.25 inch)
A feeder cable/ wire is?
One that takes power to or from a component
What are the three approved methods for an engine change
Bootstrap method
Overhead crane and support sling
Using an uplift loader
