The combustion chamber liner is made of welded high-nickel steel and experiences the hottest operating temperatures, especially during engine idle and maximum rpm. To ensure continuous ignition of the flame, turbulence is purposefully created around the flame using the fast-moving air. Materials like dye, chalk, and some markers can be used to mark combustion and turbine components during assembly and disassembly since they are acceptable for use in areas directly exposed to engine gas paths.

1. Materials
• combustion chamber liner=
welded high-nickel steel
HOTTEST ZONE- first upstream third of its
length (flame zone).
The MOST SEVERE operating periods:
during engine idle (reduced air) and
maximum rpm (power) operation
Intro
Process
Fuel supply
Types
COMBUSTIONMaterials
CHAMBER
AE 424

2. Combustion Chamber is part of the
Hot Section with Exhaust and Turbines
FAQ: Hot spots on tail cone indicate that the
combustion chamber of a jet engine is not
properly working

3. Major Design Consideration
Problem:
How to have a continuous ignition flame
burning despite the fast flowing air around
it?
Solution:
Create a purposeful turbulence around
the flame.
Intro
Process
Fuel supply
Types
COMBUSTIONMaterials
CHAMBER
AE 424

4. Certain materials may be used to mark
combustion and turbine components
during disassembly and assembly
 layout dye, chalk, and some
commercial felt-tip markers are
considered ACCEPTABLE for use in marking
parts that are directly exposed to an engine's
gas path such as turbine blades and disks,
turbine vanes, and combustion chamber
Intro
Process
Fuel supply
Types liners
COMBUSTIONMaterials
CHAMBER
AE 424

5. • In which type of turbine engine
combustion chamber is the case and liner
removed and installed as one unit during
routine maintenance? CAN
• The air passing through the combustion
chamber of a turbine engine is used to
support combustion and to cool the
engine.
Intro
Process
Fuel supply
Types
COMBUSTIONMaterials
CHAMBER
AE 424

6. • In which type of turbine engine
combustion chamber is the case and liner
removed and installed as one unit during
routine maintenance? CAN
• The air passing through the combustion
chamber of a turbine engine is used to
support combustion and to cool the
engine.
Intro
Process
Fuel supply
Types
COMBUSTIONMaterials
CHAMBER
AE 424