Cabin Atmosphere

Question 1

Two groups of independent cabin compressors?

Answer 1

Positive displacement and centrifugal 

Question 2

What is the principal control of pressurization systems?

Answer 2

Outflow valve

Question 3

Method used by some turbines?

Answer 3

Bleed air

Question 4

What is a roots blower?

Answer 4

Engine driven compressor

Question 5

What controller will change the position of outflow valve?

Answer 5

Cabin pressure controller

Question 6

Methods of providing heat on recip. aircraft?

Answer 6

Gas combustion heater, electric, exhaust gas air to air heat exchanger

Question 7

Function of ventilating air in a combustion heater?

Answer 7

More heat where needed

Question 8

Sources of ventilating air and comb. heater?

Answer 8

Blower, ram air, cabin compressor

Question 9

Components of air cycle coding system?

Answer 9

Expansion turbine, air to air beat exchange, various valves

Question 10

What causes the temp drop in air cycle?

Answer 10

Air does work and undergoes a pressure and temperature drop

Question 11

How does a water separator work?

Answer 11

Vanes swirl the air and the water is collected

Question 12

Vapor cycle?

Answer 12

Freon cooling

Question 13

Components of vapor cycle?

Answer 13

Evaporator, compressor, condenser, and expansion valves

Question 14

How does continuous flow oxygen work?

Answer 14

Oxygen flows from a cylinder through a line to a reducing valve and to mash outlets

Question 15

How does pressure demand systems work?

Answer 15

Oxygen flows from cylinder to PD regulator and each member adjust as needed

Question 16

If system is open 2 or more hours?

Answer 16

Must be purged to remove moisture

Question 17

Used to purge?

Answer 17

Dry nitrogen, air, or 02

Question 18

Type of O2 used?

Answer 18

Aviators breathing oxygen (ABO)

Question 19

Why is oil added to vapor cycle systems?

Answer 19

Provide lube for compressor

Question 20

Safety handling 02?

Answer 20

Oil free tools, clothing, hands, eye protection