Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Volume 3 URE's
ALL volume threes URE's
| Question | Answer |
|---|---|
| in its natural state oxygen is | tasteless colorless and odorless |
| what gaseous oxygen system valve type prevents a complete loss of oxygen? | check |
| the supply and s distribuuition tubing for aircraft oxygne systems is identifieaed by ceaellulose tape that is | green and white |
| the disadvantage of a contious flow oxygen regualtor is that | wastes oxygen |
| what does the molecular sieve oxygen generating system concentrator supply to the oxygen regulator control panel? | 93 percent oxygen enriched gas |
| liguid oxygen (LOX) converts gaseous oxygen(GOX) at an expansion rate of | 860 to 1 |
| except during servicing , the liquid oxygen systmes's combination fill, buildup an vent valveae is always s in the | buildup position |
| on aircraft liquid oxygen system, the handle on a manually operated buildup and vent valve is designed to prevent | the filler access door from closing in the vent position |
| bleed air is usually taken from which part of the engine section? | compressor |
| aircraft engine temperature and pressure as it applies to the bleed air system is determined by the | engine throttle setting and ambient temperature |
| what is the purpose of the engine bleed air (EBA) check valve? | prevent the loss of compressed bleed air |
| what engine bleed air (EBA ) componet preventss loss of aicir sthrough the engine when its shutdown? | shutoff valve |
| the ducting for hugh-pressure /high-temperature air conditiong is usally made of | stainless steeL |
| what tool do you use to ensure aligment and sealing when installing a v-band clmap on air-conditiong ducting? | Rawhide mallet |
| what type of high-pressure/high temperature ducting does not require a gasket? | compressible flange |
| what lubricant can be used on a beaded channel clamp sleeve to ease instilation? | water |
| the crush typeae s gasket used in aircraft ducting is made of | a soft aluminum, or fiber and metal mesh |
| expansion joints in bleed air systems are best used for | a short run of ducting |
| what prevents fiberglass fabric from sweelling when the aircraft climbs to high altitudes? | vent holes |
| what is defined as a depression in the duct wall, where the surface of the material isnt cut or removed but the depression has caused ssharp bends or creases in the material | major dent |
| the simultaneous control of temperature, humidity, and air distribuition within a space is the definition of | air-conditioning |
| what aircraft air condiotng system componet is a radiator that cold ram air passes through in order to cool the hot bleed air from the engine | primary heat exchanger |
| what aircraft aircondioting system componet controls the flow of ram sir through the primary heat excahnges? | movable inlet an exit doors |
| the rapid cooling of bleed air causes | moisture to condense in the form of fog |
| As bleed air enters the compressor of the air cycle machine, its pressure is increased. with the increase in pressure, there is also an increase in temperature. Which removes most of this increased temperature? | Secondary heat exchanger |
| the low atmospheric pressure found at extremly high altitudes can cause a person's blood vessels to | rupture |
| what controls the action of the outflow valve in a fixed isobaric, single differential pressurization system? | regulating control chamber pressure |
| what are the parts of the isobaric section of the cabin pressure regulator? | an aneroid, spring, and metering valve |
| what are the componets of the diffrential section of the cabin pressure regulator? | a diaphragm, spring, and metering valve |
| what maintains the pressure if the dual-diffrential cabin pressure regulator fails during flight? | the outflow valves |
| what is s theae purpose s sof the pneummatic relay in a cabin pressurization systemm? | ensure that both outflow valves operate at the same time |
| in the variable isobaric pressurization system. the manual control valve sis s used as an alternate when the | cabin pressure controller fails |
| the normal connection for thermal switcheaes in a fire switches in a fire warning system is in series swith | an Iron Fireman switch |
| the direct current (DC) voltage supplied to the lights in a photoelectric circuit is pulsed at a rate of | 10 Hz |
| A liquid fire extingguishing agent douses a fire by | excluding oxygen from the area |
| A gaseous nitrogen charge is added to a liquid fire extinguishing agent in order | expel the agent from the bottle |
| what liquid-agent fire extinguisher container componet holds in both the liquid agent and nitrogen charge? | Frangible disc |
| In a liquid-agent fire extingguisher container, why is the frangible disc undercut into pie shaped sections | prevent small pieces from passing through the strainer |
| what is usually located at the lowest point in a fuel tank? | sump and drain |
| A bladder type tank conforms to the shape of the vacant cavity within the fuselage because it is made out of | rubber or s nylon mateaerial |
| wing tanks are | sealed-off parts of the wing structuure |
| A centrifugal-type aircraft fuel pump may be used? | for boost, transfer or air refueling operations |
| what type of fuel pump must have a fuel an vapor proof housing? | centrifugal pump with electrically driven, direct current(DC), series wound motor |
| what kind of centrifuagl pump is used when a fuel supply is required during periods of negative gravicty conditions? | Dual-impeller |
| In a dual impelleaer s fuel pump what prevents foreign objects s from holding s the bypass valve open? | an inlet screen |
| what air refueling pump componets depend on fuuel for lubrication? | bearings |
| what air refueling pump componet removes fuel vapors caused by the s centrifuugal force of the impellers? | Rotor |
| the arrow stamped on the body of a fuel system check valve indicates the | direction of free flow |
| A pressure-loaded fuel system check valve is used | when gravity flow through the valve is undesirable |
| the fuel system componet that prevents excessive pressure from building up in trapped lines or within the valve body are three | spring-loaded relief valves |
| the rotary plug valve can be removed and replaced | without draining the fuel lines or tanks |
| what rotary plug valve parts rotates and seals off the passage of fuel during plug valve removal? | secondary seal sleeve |
| another name for the disc type valve in a fuel system is | butterfly |
| in a piston-type fuel control valve, what aids the piston closure an prevents fuel from entering the tank? | spring |
| some fuel level control valves have a dual float system so that? | there will be a double safety factor |
| the low-level shutoff valve prevents the reverse flow of fuel through the valve s by what type of action | check valve |
| fuel ontrolled switches normally control cicuuicts that indicate | fuel-flow, fuel pressure an fuel level |
| what most likelycontrols the automatic pump shutoff when all fuel is depleted from a fuel tank? | float switches |
| in a direct current(DC) liquid level fuel indicating system, what posistions the wiper contact on the resistance strip | the movement of a float in the tanks |
| what capacitance-type, fuel idicating componet allows for changes in fuel density | compensator |
| what prevents a fuel thank from collapsing if anair pressure regualtor fails and excessive negative pressure develops? | pressure/vacuum relief valve |
| A well-designed aircraft fuel system will ensure | positive and reliable fuel flow under all conditions |
| the three types of shutoff valves used in the crossfeed system are the | sliding gate, rotary plug and disc |
| the three methods of transferring fuel are gravity flow,? | air pressure, and pump |
| what is the basic purpose of the fuel vent system? | prevent fuel tank rupture or collapse |
| the most prevalent method of refueling for ground servicing is | single-point |
| the air-refueling (A/R) receptacle is operated | hydraulically, but controlled electrically |
| fuel's ability to hold contaminants in suspension is increased with a higher | Viscosity |
| what type of foreign particle appears in the fuel in a crystalline, granular, or glasslike form? | Sand or dust |
| which type of fuel contaminent can form a red,brown,gray or black slime in the fuel? | microbial growth |
| specks or granules of sediment in the fuel are visable to the naked eye are approximately how many microns or larger? | 40 |
| Classification of fuel is necessary sin order to determine | whether or not they constitute a flight safety hazard |
| How are fuel leaks categorized? | class A through D |
| leak limits correspond to the? | leak limit category and fuel type |
| icin addition to the air force technical order(AFTO) form 781 or AFTO form 781K what form must you use to document fuel leaks when automatic systems are not available? | AFTO form 427 |
| the resistance of an object to change its motion is a property of matter called? | Inertia |
| the ability to do work is the definition of | energy |
| an aircraft taxing at a constant speed is an example of | newtons first law of motion |
| which of newtons laws of motin is the best description of why an operating jet engine produces forward thrust? | Third |
| in a jet engine what meters the fuel for combustion? | fuel control |
| when the turbine wheel absorbs the fuel energy.. | the energy returns to the compressor |
| what effect does the divergent design of a jet engine diffuser have on pressure? | increases pressure |
| air and gas flowing through a jet engine require | greater velocity exiting than entering |
| when a jet engine uses two or more turbine wheels, what is placed infront of each turbine wheel | Nozzle diaphram |
| a jet engine derives its name from the fact | it uses a exhaust gas-driven turbine wheel to drive its compressor |
| what are the two types of jet engine compressors? | centrifugal and axial flow |
| after air is drawn into the guide vanes of a centrifugal jet engine compressor, it is subjected to | rotational and centrifugal forces |
| what determines the N2 compressor rotations per minute(RPM) of a dual spool jet engine compressor? | fuel control |
| what is the purpose of s a front mounted fan in an axial sfloow jeat engine commpressor? | increase thrust and send air through the compressor core rotor |
| the combustion efficiency of a gas turbine is usally between | 95 and 100 percent |
| Engine design helps prevent igniter plug fouling by | directing air around the plug electrode |
| what forms the inner an outer surfaces of an annular-type combustion chamber? | interlocking stainless steel bands |
| fuel that accumulates after a failed start or after engine shutdown is | drained overboard by a drain system |
| the three turbine designs used in jet engines are | impulse,reaction, and reaction-impulse |
| on some jet engines, what secures the turbine bucket in place? | lock strips |
| the exhaust duct connects the turbine outlet and the | jet nozzle |
| what is the purpose of the exhaust duct? | straighten exhaust gas-flow |
| one common type of variable-area orifice used on augmenters is the | segmented flap |
| what augmenter componet creates local turbulance and reduces gas velocity | Flameholder |
| which engine type used a lot during the early years of jet engine design is the most basic turbine engine design | turbojet |
| a turbo fan engine with a bypass ratio of 3:1 is classified as | medium bypass |
| whatd do you use to create a static seal between to statinary parts in the oil system? | gasket |
| what engine componet must be rotated to a predeteaermined speed in order for a jet s engine starter too be consideaered effective? | compressor |
| The air turbine (impingement) starter used on jet engines | has the advantages of less weight a fewer moving parts than other starters |
| The cartridge-pneumatic starter is a gas-driven turbine wheel coupled to the engine through a reduction gear system and | an overrunning clutch |
| In a gearbox-type starter system, what transmits the torque supplied by the jet fuel starter (JFS) to the engine gearbox? | Power takeoff(PTO) shaft |
| What jet engine alternating current (AC) ignition system unit develops 20,000 volts delivered to the igniter plugs? | Transformer |
| A simple direct current (DC) ignition system consists of | vibrator,igniter plugs, and transformer |
| Jet engine tachometer gauges are calibrated in percent of | maximum RPM |
| The purpose of the jet engine pressure ratio (EPR) indicating system is to give a reference to the engine’s | Available thrust output |
| Exhaust gas temperature (EGT) indicators indicate the engine EGT in | degrees celsius |
| The three benefits of the Joint Oil Analysis Program (JOAP) are improved safety, reduced maintenance cost, and | increased equipment availabilty |
| Through the use of spectrometric oil analysis, aircraft will have a higher in-commission rate because there will be | less unecessary maintence |
| At a minimum, what should you wear when taking an oil sample? | goggles and gloves |
| What indicates lubricant system contamination by dirt and sand? | an increase in silicon |
| What form must you fill out and submit to the non-destructive inspections (NDI) laboratory with all oil samples? | DD form 2026 |
| the primary function of a s hydromecahnical fuel control on a jet engine is to | meter the fuuel, making ceaertin that the engine gets the coorrect quantity for combustion at all times |
| What type of fuel control uses thermocouples, relays, amplifiers, and solenoids, to help control the engine? | electrohydroomechanical |
| The purpose of a fuel/oil cooler in a fuel system is to | heat fuel an cool the oil |
| When classified according to structure, which of the following is not a type of an oil pump? | rotogear |
| What jet engine oil pump consists of a gear and rotor within a housing? | Gerotor |
| A micron is a metric linear measurement equal to | 1/25,000 of an inch. |
| The two types of oil coolers used in jet engine oil systems are air/oil and | fuel/oil. |
Created by:
Jeffhawkins5
Popular Aviation sets