Prop and oil system
70 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which system provides a constant supply of filtered oil to various components of the engine?

  • Cooling system
  • Pressure system (correct)
  • Scavenge system
  • Breather system

    • When should the oil level be checked for the most accurate results?

  • 5 minutes after shutdown
  • 15 to 20 minutes after shutdown (correct)
  • Immediately after shutdown
  • 30 minutes after shutdown

    • What is the normal oil level range in the tank?

  • MIN to ADD
  • ADD to MAX HOT (correct)
  • MIN to MAX HOT
  • MIN to MAX COLD

    • Which system is NOT a component of the oil system?

    <p>Ignition system</p> Signup and view all the answers

    How often should the oil level be serviced after engine shutdown?

    <p>Within 30 minutes</p> Signup and view all the answers

    What is the capacity of the oil system?

    <p>18.5 U.S. quarts</p> Signup and view all the answers

    Which component of the engine is NOT supplied with oil by the oil system?

    <p>Fuel injectors</p> Signup and view all the answers

    What is the correct method for checking the oil level in the tank?

    <p>Using the dipstick</p> Signup and view all the answers

    What is the consequence of not servicing the engine oil level properly?

    <p>Engine damage</p> Signup and view all the answers

    When should the oil level be checked for the most accurate results?

    <p>15-20 minutes after engine shutdown</p> Signup and view all the answers

    Which warning light illuminates if the oil pressure drops to between 40 and 90 psi, for 10 seconds, above idle power?

    <p>Red OIL PX warning</p> Signup and view all the answers

    If the oil pressure is less than 15 psi at idle power, what happens to the amber OIL PX caution?

    <p>It extinguishes</p> Signup and view all the answers

    What does the SCU logic prevent during engine ground start?

    <p>Nuisance caution illumination</p> Signup and view all the answers

    When does the amber OIL PX caution illuminate while maneuvering?

    <p>When oil pressure remains between 15 and 40 psi for 5 seconds or more</p> Signup and view all the answers

    What does the illumination of both red and amber OIL PX caution/warning indicate?

    <p>SCU failure</p> Signup and view all the answers

    What is the range of oil pressure that triggers the amber OIL PX caution at idle power?

    <p>15 to 40 psi</p> Signup and view all the answers

    What is the range of oil pressure that triggers the red OIL PX warning above idle power?

    <p>40 to 90 psi</p> Signup and view all the answers

    What does a momentary illumination of the amber OIL PX caution while maneuvering indicate?

    <p>Nuisance caution illumination</p> Signup and view all the answers

    What happens to the amber OIL PX caution if the oil pressure remains between 15 and 40 psi at idle power for 5 seconds or more?

    <p>It illuminates</p> Signup and view all the answers

    How is power provided for the oil pressure transducer?

    <p>Through a circuit</p> Signup and view all the answers

    Which system incorporates two oil pickup elements to ensure oil pressure is maintained during inverted flight?

    <p>The pressure system</p> Signup and view all the answers

    What is the purpose of the scavenging system in the oil system?

    <p>To return scavenged oil from the bearings and gearbox</p> Signup and view all the answers

    Where is the oil cooler located in the aircraft?

    <p>In the lower aft cowl assembly</p> Signup and view all the answers

    How is the oil tank vented in the aircraft?

    <p>Through a four-point breather system</p> Signup and view all the answers

    Why may the engine oil pressure indicator display oil pressures up to 4 psi with the engine shut down?

    <p>Due to the design of the oil pressure transmitter</p> Signup and view all the answers

    What happens if the main oil filter becomes clogged in the oil system?

    <p>Unfiltered oil continues to lubricate the engine</p> Signup and view all the answers

    Where are the oil pressure and temperature sensed in the oil system?

    <p>Downstream of the main oil pump</p> Signup and view all the answers

    What is the purpose of the signal conditioning unit (SCU) computer in the oil system?

    <p>To illuminate the warning on the engine indication and crew alerting system (EICAS)</p> Signup and view all the answers

    At what oil pressure does the SCU activate the red OIL PX warning during idle power?

    <p>15 psi or below</p> Signup and view all the answers

    What is the purpose of the engine data manager (EDM) in the oil system?

    <p>To pass oil pressure data to the SCU computer</p> Signup and view all the answers

    Which warning light illuminates if the oil pressure is between 15 and 40 psi at idle power?

    <p>Amber OIL PX caution</p> Signup and view all the answers

    What happens if the oil pressure drops to between 40 and 90 psi, for 10 seconds, above idle power?

    <p>Both amber and red OIL PX caution/warning illuminate</p> Signup and view all the answers

    If the oil pressure is less than 15 psi at idle power, what happens to the amber OIL PX caution?

    <p>It extinguishes</p> Signup and view all the answers

    What does a momentary illumination of the amber OIL PX caution while maneuvering indicate?

    <p>A normal oil pressure buildup</p> Signup and view all the answers

    What does the illumination of both red and amber OIL PX caution/warning indicate?

    <p>An SCU failure</p> Signup and view all the answers

    What is the purpose of the signal conditioning unit (SCU) computer in the oil system?

    <p>To prevent nuisance caution illumination</p> Signup and view all the answers

    What is the range of oil pressure that triggers the red OIL PX warning above idle power?

    <p>40-90 psi</p> Signup and view all the answers

    When should the oil level be checked for the most accurate results?

    <p>During engine shutdown</p> Signup and view all the answers

    Where are the oil pressure and temperature sensed in the oil system?

    <p>Oil tank</p> Signup and view all the answers

    How is power provided for the oil pressure transducer?

    <p>Through a circuit</p> Signup and view all the answers

    Which two elements make up the pressure system in the oil system?

    <p>Two oil pickup elements and two dual-element gear-type pumps</p> Signup and view all the answers

    What is the purpose of the scavenging system in the oil system?

    <p>To return scavenged oil from the bearings and gearbox</p> Signup and view all the answers

    Where is the oil cooler located in the aircraft?

    <p>In the lower aft cowl assembly</p> Signup and view all the answers

    How is the oil tank vented in the aircraft?

    <p>By a four-point breather system that includes a breather valve and centrifugal breather</p> Signup and view all the answers

    What triggers the red OIL PX warning in the engine indication and crew alerting system (EICAS) above idle power?

    <p>Oil pressure dropping to 40 psi or below</p> Signup and view all the answers

    What happens if the main oil filter becomes clogged in the oil system?

    <p>A filter bypass valve allows unfiltered oil to continue to lubricate the engine</p> Signup and view all the answers

    Where are the oil pressure and temperature sensed in the oil system?

    <p>Downstream of the main oil pump</p> Signup and view all the answers

    What is the purpose of the signal conditioning unit (SCU) computer in the oil system?

    <p>To contain the logic to illuminate the warning on the engine indication and crew alerting system (EICAS)</p> Signup and view all the answers

    What is the purpose of the engine data manager (EDM) in the oil system?

    <p>To pass the oil pressure data to the signal conditioning unit (SCU) computer</p> Signup and view all the answers

    What range of oil pressure triggers the amber OIL PX caution at idle power?

    <p>15 psi or below</p> Signup and view all the answers

    Which component of the engine drives the propeller operating speed of 2000 RPM?

    <p>The reduction gearbox</p> Signup and view all the answers

    What is the measure of the angle between the plane of rotation of the propeller and the chord line of the blade when the propeller blades are aligned nearly straight into the wind?

    <p>Feathered</p> Signup and view all the answers

    At what throttle settings will the propeller blades be at low pitch?

    <p>Low speeds</p> Signup and view all the answers

    What is the approximate angle of the propeller blade from the reference plane when it is in low pitch?

    <p>15°</p> Signup and view all the answers

    What is the purpose of the engine power management unit (PMU) and the propeller interface unit (PIU)?

    <p>To control the propeller blade angle and propeller speed</p> Signup and view all the answers

    What is the approximate torque produced by the reduction gearbox when the engine is producing 100% indicated torque at the prop shaft?

    <p>2750 foot-pounds</p> Signup and view all the answers

    What is the approximate thrust produced at sea level, zero airspeed when the engine is producing 100% indicated torque?

    <p>2750 pounds</p> Signup and view all the answers

    What is the purpose of the propeller system in the aircraft?

    <p>To maintain a constant speed of 2000 RPM</p> Signup and view all the answers

    What is the range of oil pressure that triggers the red OIL PX warning above idle power?

    <p>Greater than 90 psi</p> Signup and view all the answers

    What is the capacity of the oil system in the aircraft?

    <p>Not mentioned in the text</p> Signup and view all the answers

    Which component is responsible for reducing the power turbine output shaft speed from over 30,000 RPM to the propeller operating speed of 2000 RPM?

    <p>The reduction gearbox (RGB)</p> Signup and view all the answers

    What is the purpose of the chip detector in the reduction gearbox (RGB)?

    <p>To indicate oil contamination</p> Signup and view all the answers

    What is the role of the propeller system in the aircraft?

    <p>To maintain a constant speed of 2000 RPM</p> Signup and view all the answers

    What is the maximum torque available from the engine at sea level on a standard day?

    <p>2900 foot-pounds</p> Signup and view all the answers

    Which component is responsible for automatically controlling the propeller blade angle and propeller speed?

    <p>The engine power management unit (PMU)</p> Signup and view all the answers

    What is the purpose of the permanent magnet alternator (PMA) in the aircraft?

    <p>To generate electrical power</p> Signup and view all the answers

    What is the role of the air conditioning compressor in the aircraft?

    <p>To provide air conditioning</p> Signup and view all the answers

    How is the engine power output measured in the aircraft?

    <p>By the torque produced by the reduction gearbox</p> Signup and view all the answers

    What is the purpose of the torque probe in the aircraft?

    <p>To control the propeller blade angle</p> Signup and view all the answers

    What is the role of the power turbine in the aircraft engine?

    <p>To drive the reduction gearbox</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser