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29 Cards in this Set
- Front
- Back
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WHAT IS THE ECS DESIGNED FOR?
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Its designed to provide a comfortable environment for the flight crew and avonic equipment.
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WHAT IS THE ECS COMPRISED OF?
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Its comprised of the air conditioning system, air disttribution and exhaust system, and cabin pressure control system.
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DESCRIBE THE AIR CONDITIONING SYSTEM.
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It provides conditioned air to the air distribution and exhaust system.
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WHERE DOES THE AIR CONDITIONING ROUTES THROUGH?
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It routes through the flight station, cabin and avionics equipment.
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WHAT IS THE AIR CONDITIONER COMPRISED OF?
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Its comprised of two independent air cycle colling systems of identical capacity.
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WHAT ARE FRESH AIR SOURCES COMPRISED OF?
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Its comprised of two engine driven compressors (EDCs) and the air multiplier package (AMP).
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WHAT ARE ENGINE DRIVEN COMPRESSORS (EDCs)?
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Single stage compressors with fully automatic controls.
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WHERE DO EDCs SUPPLY AIR?
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It supplies air to the air cyle cooling systems during flight and are operable only when No. 2 and No. 3 engines are running.
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WHAT IS THE AIR MULTIPLIER PACKAGE (AMP)?
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Its the primary air source for the air cycle cooling systems only during static ground operations when the APU is running.
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HOW MANY EDCs ARE ON THE P-3 AIRCRAFT?
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2. One to supply air to each of the two air cycle cooling systems.
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WHERE IS THE DUCT CROSSOVER?
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Its in the APU compartment and allows the ducts some flexibility for expansion.
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WHAT IS THE MAXIMUM POWER REQUIREMENT FOR THE EDCs?
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81 hp.
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HOW MANY POUNDS OF AIR DOES THE EDCs DELIVER PER MINUTE?
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60 lbs of air per minute at sea level
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HOW MANY POUNDS OF AIR DOES THE APU/AMP DELIVER PER MINUTE?
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Approximately 125 lbs per minute
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DESCRIBE THE APU BLEED AIR SYSTEM.
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The APU bleed air system is designed to supply air at the pressure and flow rate required to start the engines.
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WHAT DOES THE AMP CONSIST OF?
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It consist a turbocompressor, and a pressure regulator and shut off valve.
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WHAT IS USED TO DRIVE A CENTRIFUGAL COMPRESSOR?
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The turbine converts the energy of the pressure reduction process into shaft power.
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DESCRIBE THE AIR CYCLE COOLING SYSTEM OPERATION.
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During ground operation, ambient air is drawn in from the nose well and blown across the heat exchangers by electrically driven fans.
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HOW MANY TEMPERATURE CONTROL SYSTEMS DOES THE P-3 AIRCRAFT HAVE?
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2
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WHERE ARE THE TEMPERATURE CONTROL SYSTEMS LOCATED?
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The flight station, and the main cabin area
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DESCRIBE AUTOMATIC MODE.
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The operation regulates the cabin or flight station environment at a temperature setting 18 C and 29 C.
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DESCRIBE MANUAL MODE.
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The operation for the temperature control system is a backup mode.
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DESCRIBE THE CABIN PRESSURE OUTFLOW VALVE.
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It is the final component that controls how much air is exhausted overboard.
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DESCRIBE THE CABIN PRESSURE CONTROLLER.
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It controls cabin air pressure by modulating the outflow valve to restrict the amount of cabin air exhausting overboard.
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THE CABIN PRESSURE CONTROLLER OPERATES IN HOW MANY MODES?
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2
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DEFINE ISOBARIC CONTROL.
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The process of contolling the pressurization to a specified cabin altitude.
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DEFINE PRESSURE DIFFERENTIAL CONTROL.
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The process of controlling pressurization to fixed air pressure differential value
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DESCRIBE THE CABIN PRESSURE SAFETY RELIEF VALVE.
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If both isobaric and pressure differential control systems fail, this valve operates to maintain the maximum allowable cabin pressure of 0.6 to 1.1 inches Hg
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DESCRIBE NEGATIVE PRESSURE RELIEF VALVE.
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Prevents the cabin pressure from becoming lower than ambient atmospheric pressure.
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