Term
WHAT ARE THE TWO MAIN GASES THAT MAKE UP OUR ATMOSPHERE?
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Definition
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Term
| WHY ARE THE CABINS OF MOST TURBINE-POWERED AIRCRAFT PRESSURIZED? |
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Definition
| THE AIRCRAFT FLY AT SUCH HIGH ALTITUDES SUPPLEMENTAL OXYGEN IS NEEDED. |
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Term
| WHERE DOES PRESSURIZING AIR COME FROM ON MOST TURBINE-POWERED AIRCRAFT? |
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Definition
| BLED AIR FROM ONE OF THE ENGINE COMPRESSORS. |
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Term
| WHERE DOES THE PRESSURIZING AIR COME FROM ON MOST OF THE SMALLER RECIPROCATING-ENGINE POWERED AIRCRAFT? |
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Definition
| FROM THE ENGINE TURBO CHARGER. |
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Term
| WHAT DETERMINES THE AMOUNT OF PRESSURIZATION THAT AN AIRCRAFT CAN USE? |
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Definition
| STRUCTRUAL STRENGTH OF THE AIRCRAFT CABIN. |
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Term
| HOW IS CABIN PRESSURE CONTROLLED IN A PRESSURIZED AIRCRAFT? |
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Definition
| PRESSURE CONTROLLER MODULATES THE OUTFLOW VALVE TO MAINTAIN THE CORRECT PRESSURE IN THE CABIN. |
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Term
| WHAT IS MEANT BY ISOBARIC MODE OF CABIN PRESSURIZATION? |
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Definition
| THE MODE THAT KEEPS THE CABIN ALTITUDE CONSTANT AS THE AIRCRAFT CHANGES ITS FLIGHT ALTITUDE. |
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Term
| WHAT IS MEANT BY CONSTANT DIFFERENTIAL MODE OF CABIN PRESSURIZATION? |
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Definition
| THE MODE THAT HOLDS THE PRESSURE INSIDE THE CABIN A CONSTANT AMOUNT ABOVE THE OUTSIDE AIR PRESSURE. |
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Term
| WHAT IS THE FUNCTION OF THE CABIN OUTFLOW VALVE ON A PRESSURIZED AIRCRAFT? |
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Definition
| MAINTAINS THE CORRECT AMOUNT OF PRESSURE INSIDE THE CABIN. CONTROLLED BY PRESSURE CONTROLLER. |
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Term
| WHAT IS THE FUNCTION OF THE CABIN PRESSURE SAFETY VALVE ON A PRESSURIZED AIRCRAFT? |
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Definition
| PREVENT CABIN PRESSURE FROM EXCEEDING THE MAXIMUM ALLOWABLE DIFFERENTIAL PRESSURE. |
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Term
| WHY MUST PRESSURIZED AIRCRAFT HAVE A NEGATIVE PRESSURE RELIEF VALVE? |
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Definition
| THE STRUCTURE OF AN AIRCRAFT IS NOT DESIGNED TO TOLERATE THE INSIDE PRESSURE BEING LOWER THAN THE OUTSIDE PRESSURE. |
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Term
| WHAT KEEPS THE CABIN OF A PRESSURIZED AICRAFT FROM BEING PRESSURIZED WHEN THE AIRCRAFT IS ON THE GROUND? |
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Definition
| THE LANDING GEAR SQUAT SWITCH HOLDS THE SAFETY VALVE OPEN. |
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Term
| WHAT ARE TWO TYPES OF AIRCONDITIONING SYSTEMS THAT MAY BE INSTALLED ON AN AIRCRAFT? |
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Definition
| AIR-CYCLE SYSTEMS AND VAPOR-CYCLE SYSTEMS. |
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Term
| WHERE DOES THE WARM AIR COME FROM THAT IS USED TO HEAT THE CABIN OF LARGE JET TRANSPORT AIRCRAFT? |
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Definition
| WARM ENGINE COMPRESSOR BLEED AIR. |
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Term
| WHERE DOES THE WARM AIR COME FROM THAT IS USED TO HEAT THE CABIN OF MOST SMALL SINGLE ENGINE RECIPROCATING ENGINE POWERED AIRCRAFT? |
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Definition
| FROM A SHROUD AROUND THE ENGINE MUFFLER. |
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Term
| WHERE DOES THE FUEL COME FROM THAT IS USED IN AN AIRCRAFT COMBUSTION HEATER? |
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Definition
| FROM THE AIRCRAFT FUEL TANKS. |
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Term
| WHAT HAPPENS TO A COMBUSTION HEATER IF THE FLOW OF VENTILATING AIR IS RESTRICTED? |
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Definition
| IF THE PRESET TEMPERATURE IS REACHED, THE LIMIT SWITCH WILL SHUT OFF FUEL TO THE HEATER. |
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Term
| HOW IS THE HEAT REMOVED FROM AN AIRCRAFT CABIN WITH A VAPOR CYCLE AIR CONDITIONING SYSTEM? |
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Definition
| THE CABIN HEAT IS ABSORBED BY THE REFRIGERANT IN THE EVAPORATOR, AND IS CARRIED OUTSIDE THE AIRCRAFT WHERE IT IS GIVEN UP TO THE OUTSIDE AIR IN THE CONDENSER. |
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Term
| WHAT PRODUCES THE COOL AIR IN A VAPOR CYCLE CONDITIONING SYSTEM? |
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Definition
| WARM CABIN AIR IS BLOWN ACROSS THE EVAPORATOR, HEAT IS TRANSFERED TO THE REFRIGERANT AND THE AIR THAT LEAVES THE EVAPORATOR IS COOL. |
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Term
| WHY MUST AIR CYCLE AIR CONDITIONING SYSTEMS INCORPORATE A WATER SEPERATOR? |
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Definition
| THE RAPID COOLING OF THE AIR IN THE EXPANSION TURBINE CAUSES MOISTURE TO CONDENSE IN THE FORM OF FOG, THIS MOISTURE IS TRAPPED IN THE MOISTURE SEPERATOR BEFORE IT CAN ENTER THE CABIN. |
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Term
| WHAT IS USED AS REFRIDGERANT IN A VAPOR-CYCLE CONDITIONING SYSTEM? |
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Definition
| A FREON TYPE LIQUID REFRIGERANT REFRIGERANT 12 OR R-134a. |
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Term
| WHAT ARE THREE WAYS SUPPLEMENTAL OXYGEN CAN BE CARRIED IN AN AIRCRAFT? |
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Definition
| HIGH PRESSURE GAS, IN ITS LIQUID FORM, AND AS A SOLID IN THE FORM OF A CHEMICAL CANDLE. |
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Term
| WHAT KIND OF GASEOUS OXYGEN MUST BE USED TO SERVICE AN AIRCRAFT OXYGEN SYSTEM? |
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Definition
| AVIATORS BREATHING OXYGEN ONLY! |
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Term
| WHAT IS USED TO CHECK AN OXYGEN SUSTEM FOR LEAKS? |
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Definition
| A SPECIAL LEAK DETECTOR LIQUID THAT IS A FORM OF NON-OILY SOAP. |
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Term
| WHAT IS A CONTINUOUS FLOW OXYGEN SYSTEM? |
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Definition
| AN OXYGEN SYSTEM THAT CONTINUOUSLY FLOWS A METERED AMOUNT OF OXYGEN INTO THE MASK. |
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Term
| WHAT IS A PRESSURE DEMAND OXYGEN SYSTEM? |
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Definition
| OXYGEN SYSTEM THAT FLOWS OXYGEN INTO THE MASK ONLY WHEN THE WEARER OF THE MASK INHALES. |
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Term
| WHAT IDENTIFICATION MARKING MUST BE STAMPED ON AN OXYGEN BOTTLE THAT IS CARRIED IN AN AIRCRAFT? |
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Definition
| DOT 3AA OR DOT 3HT, THE DATE OF MANUFACTURE, AND DATES OF ALL HYDROSTATIC TESTS. |
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