combustion

Question 1

what’s the function of the combustion section?

Answer 1

add energy to the gasses by expanding and accelerating them then delivering to the turbine section

Question 2

what are the 4 types of combustion chambers?

Answer 2

multi can (more than 1 combustion can), can annular (individual inner flame tubes with a common air casing), annular (single tube wrapping around engine with outer casing), reverse annular flow

Question 3

why are there air holes in the combustion chamber cans?

Answer 3

so the air can cool down inside and the cans don’t melt

Question 4

what are the 2 types of fuel nozzles and what’s the difference between them?

Answer 4

simplex and duplex. simplex, fuel is ejected through 1 nozzle. duplex, fuel is ejected through 2 nozzles

Question 5

what are the main components in the combustion cans?

Answer 5

flare, igniter, fuel nozzle and air holes

Question 6

where in the engine is the combustion section loacted?

Answer 6

between the turbine and the diffuser section, it is the first part of the ‘hot section’

Question 7

in the multi-can combustion system, what is installed to make sure all cans remain ignited ?

Answer 7

an interconnecting tube

Question 8

what is a case drain used for and where is it located?

Answer 8

used to remove excess fuel from the combustion chamber on engine shut down, is located on the bottom of the combustion chamber