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18 Cards in this Set
- Front
- Back
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The engine section from which bleed air is usually taken is the...
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Compressor.
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What is the approximate temperature and pressure of engine bleed as it is tapped from the engine compression section.
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(200 psi) and (900 degrees F)
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Which component determines the amount of bleed air bled from a gas turbine compressor?
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Load control valve.
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What engine bleed component prevents loss of air through the engine when it is shutdown?
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Shutoff valve.
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What component stops the flow of air to the air-conditioning system?
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System shutoff valve.
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Why are orifices installed between the air source and the airconditioning system?
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To control the amount of bleed air drawn from the air source.
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What is the bleed air system component that protects downstream components from excessive pressure by the controlling the airflow?
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Pressure limiter.
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The amount of airflow through a pressure limiter is effected by each of these (inlet pressure, inlet temperature, and differential pressure)except..
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outlet pressure.
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To remedy the limitations of a flow control valve, which bleed air system component is usually installed upstream of the flow control valve.
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Pressure regulator and shutoff valve.
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What is the bleed air system component that modulates to maintain a constant downstream air pressure.
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Airflow regulator.
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The lockout butterfly of the airflow regulator has an offset center of rotation. This design gives the butterfly a pressure that is unbalanced towards which position?
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Closed
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After replacing a bleed air system airconditioning airflow regulator fusable plug, you must also reset the...
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Pneumatic switch.
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The downstream air temperature of the bleed air air-conditioning system has exceeded the predetermined temperature. This has caused the butterfly to close. What flow control and shutoff valve component will now open?
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Thermal switch.
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The flow control valve in the bleed air air conditioning system controls flow by maintaining a constant differential pressure between the..
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inlet and throat of the venturi
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While installing a bleed air system bolted flanged face duct end, you use a new crush-type gasket, align the flange, and insert the bottom bolts first to form a cradle. Then, you install the remaining bolts and tighten all the nuts. After the installation is complete you perform an operational check that reveals a leak. From the above information what important procedure did you overlook?
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Flange bolts were not torqued in the proper sequence.
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What type of high-pressure/high-temperature ducting does not require a gasket?
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Compressible flange.
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What corrective action should be taken when a compressible flange duct end becomes distorted?
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Reshape the duct flange ends to it's original shape.
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Which lubricant can be used on a beaded channel clamp sleeve to ease installation?
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water.
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