Flashcards on Aircraft Engine Instrument Systems
Aircraft Engine Instrument Systems: Student Guide & SEO Tips
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Aircraft Engine Instruments
17 cards
Card 1
Question: How are reciprocating engine tachometers calibrated?
Answer: In hundreds of RPM.
Card 2
Question: How are turbine engine tachometers calibrated?
Answer: In percent of the engine's rated takeoff RPM.
Card 3
Question: Where does a reciprocating engine manifold pressure gauge read pressure from?
Answer: From the intake manifold of the engine.
Card 4
Question: Why do most engine oil pressure gauges have a restrictor in the line between the engine and the instrument?
Answer: To damp out pressure pulsations in the oil and keep the needle from oscillating.
Card 5
Question: How does a pressure-type fuel flow gauge measure fuel flow on a horizontally opposed, fuel-injected reciprocating engine?
Answer: By the pressure drop across the injector nozzles.
Card 6
Question: What does it indicate if a ratiometer-type oil temperature indicator needle pegs to the high side as soon as the master switch is turned on?
Answer: There is an open in the bulb circuit causing the instrument to see an infinite resistance.
Card 7
Question: How does resistance in the bulb circuit affect a ratiometer-type temperature indication?
Answer: The higher the resistance in the bulb circuit, the higher the temperature indication.
Card 8
Question: What type of indicating system is used to measure turbine engine exhaust gas temperature (EGT)?
Answer: A set of thermocouples arranged in an averaging circuit.
Card 9
Question: Where are thermocouples for turbine engine exhaust gas temperature typically installed?
Answer: In the tail pipe of the engine.
Card 10
Question: What should a thermocouple-type cylinder head temperature (CHT) indicator read when the engine is not operating?
Answer: The temperature of the outside air.