cab and atom mid term

Low or high pressure compressor

Which section of a turbine engine provides high pressure bleed air to an air to an air cycle machine for pressurization and air conditioning?

Expansion turbine

At which component in an air cycle cooling system does air undergo a pressure and temperature drop?

Carries heat to the places where needed

What is ventilating air used for on a combustion heater?

Turbine engine air used for air conditioning and pressurization is generally called?

Bleed air

Either a combustion air relief valve or a differential pressure regulator

In the combustion heater, combustion air system, what prevents to much air from entering the heaters as air pressure increases?

By controlling the rate of the air flowing out of the cabin

How is the cabin pressure of an aircraft maintained in flight?

Cabin altitude

What controls the operation of the cabin pressure regulator?

A source of compressed air, heat exchangers, and a turbine

The basic air-cycle cooling system consists of

All positive pressure from the cabin

The purpose of the dump valance in a pressurized aircraft is to relieve

Air cycle air conditioning

Hot compressor bleed air operates the conditioned air system on some turbine aircraft, cold air supplied by the

Expansions turbine

Where do the last stage of cooling in an air-cycle air condition system occur

By an automatic outflow valve that dumps all the pressure in excess of the amount for which it is set

How is the cabin pressure of a pressurized aircraft usually controlled?

Supplement physical inspection with periodic operational carbon monoxide detection tests

Which is considered a good practice concerning the inspection of heating and exhaust systems of aircraft utilizing a jacket around the engine exhaust as a heat source

Main landing gear operated switch

On some cabin pressurization systems, pressurization on the ground is restricted by the

Outflow valve opening

The cabin pressure control setting has a direct influence upon the

Control the supply of hot, cool, and cold air

What is the purpose of a mixing valve in a compressor bleed air air conditioning system?

Negative pressure relief valve

What component of a pressurization system prevents the cabin altitude from becoming higher than airplane altitude?

Outflow valve to close faster

If the cabin rate of climb is too great, the control should be adjusted to cause the

Delivery air duct check valve

Which prevents a sudden loss of pressurization in the event that there is a loss of the pressurization source?

Maintain the desired cabin pressure

The primary function of the cabin pressurization system outflow valve is to

All connection checked for leaks

After cleaning or replacing the filtering element in a combustion heater fuel system, the system should be pressurized and

Alternately turns the fuel on and off, a process know as cycling

The operation of an aircraft combustion heater is usually controlled by a thermostat circuit which

Extracting heat energy across an expansion tube

The air cycling cooling system procedure cold air by

One complete pressurization cycle is normally considered to be

An aircraft pressurization cycle is normally considered to be

Difference between the ambient and internal air pressure

Which best describes cabin deferential pressure?

Differential, unpressurized, and isobaric

The cabin pressurization modes of the operation are

barometric pressure, cabin altitude, and cabin rate of change

A pressurization controller uses