Cabin Conditioning And Pressurisation

Question 1

Pressure controller ensures the cabin alt is reached at the same time as cruise alt is reached

Answer 1

By setting a rate of climb

Question 2

In a bootstrap system the cooling air is

Answer 2

RAM air

Question 3

If the forward oil seal fails then the cabin air

Answer 3

Will be contaminated

Question 4

In a bootstrap system air is cooled

Answer 4

By expanding the air over the turbine and driving the compressor

Question 5

Heat exchanger cools the air by

Answer 5

Using ram air feed from the Naca duct

Question 6

Light aircraft ac system -

Answer 6

Heat wrapped around exhaust and co detector is used in conjunction

Question 7

Large aircraft ac systems use

Answer 7

Bleed air to supply the packs but they can also use electrically powered compressors

Question 8

System requirements

Answer 8

18-24 degrees Celsius
Co can’t exceed 1 part per 20000

Question 9

How does bleed air get to the conditioning pack

Answer 9

Isolation valve

Question 10

If cabin oressur falls below the atmospheric pressure

Answer 10

Pressure relief valences open inwards to allow airflow

Question 11

The purpose of outflow valves with regards to pressure in the cabin

Answer 11

They dump excess air

Question 12

During a cruise the outflow valves remain

Answer 12

Partially open