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11 Cards in this Set
- Front
- Back
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what is the principle control element in a cabin pressurization system?
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the cabin outflow valve
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what is the purpose of the negative pressure relief valve in the pressurization system?
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relief valve prevents from obtaining a cabin altitude higher than the actual altiude of the aircraft
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what control changes the postion of the outflow valve?
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pressurization controller
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what are the two groups of independant cabin compressors?
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centrifugal and positive displacement compressors
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what method is used by turbine powered aircraft of compressurization?
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bleed air from the engine is used for compressurization
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what is the functution of ventilating air in a combustion heater?
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carrys heat to places where is needed
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what limits the degree of cabin pressurization?
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the structural design of the fuselage by the capacity of the super chargers to maintain a constant volume of airflow
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what are the sources of ventilated air?
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ram air inlet cabin compressors blower for air and heater ops on ground
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what are the compnents in a vapor cycle freon cooling system?
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compressor condenser evaporator dryer expansion valve
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what must be done if an oxygen sysem has been depleted and not recharged within two hours?
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purged with dry nitrogen or air and oxygen
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how are high and low pressure oxygen cyclinders identifid?
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1800-1850 are green aviators breathing oxygen white letters 1 inch letters lengthwise low 400-425 are yellow
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