Turbopropulseur Flashcards
What is a turboprop engine?
A turboprop engine is a type of aircraft propulsion system that uses a gas turbine to drive a propeller.
True or False: Turboprop engines are primarily used in commercial jet aircraft.
False
Fill in the blank: Turboprop engines are most efficient at ________ altitudes.
lower
What is the main advantage of turboprop engines over turbojet engines?
They are more fuel-efficient at lower speeds and altitudes.(Ils sont plus économes en carburant à basse vitesse et à basse altitude)
Multiple Choice: Which of the following is a common application of turboprop engines? A) Fighter jets B) Regional airliners C) Space shuttles
B) Regional airliners
What type of aircraft typically uses turboprop engines?
Regional and commuter aircraft.
True or False: Turboprop engines can produce thrust at zero airspeed.
False
What component of a turboprop engine is responsible for converting gas turbine energy into mechanical energy?
The reduction gearbox.(Réducteur)
Fill in the blank: The ________ of a turboprop engine drives the propeller.
turbine
What is the typical range of cruise speeds for turboprop aircraft?
Approximately 250 to 400 knots.
Multiple Choice: Which of the following is NOT a benefit of turboprop engines? A) Lower fuel consumption B) Higher operational costs C) Shorter takeoff distances
B) Higher operational costs
What is the primary disadvantage of turboprop engines compared to turbojet engines?
Lower speed capabilities.
True or False: Turboprop engines are less reliable than turbojet engines.
False
What does the term ‘propeller efficiency’ refer to in turboprop engines?
The effectiveness of the propeller in converting engine power into thrust.
Fill in the blank: The ________ of a turboprop engine helps to maintain engine speed and efficiency.
constant speed propeller
What is the role of the compressor in a turboprop engine?
To compress incoming air before it enters the combustion chamber.
Multiple Choice: Which part of a turboprop engine is primarily responsible for fuel combustion? A) Compressor B) Turbine C) Combustion chamber
C) Combustion chamber
What is the typical thrust range produced by turboprop engines?
From about 500 to 5,000 shaft horsepower.
True or False: Turboprop engines are generally heavier than turbojet engines.
True
What is one of the key maintenance considerations for turboprop engines?
Regular inspection of the propeller and gearbox.
Fill in the blank: The ________ system in a turboprop engine controls the pitch of the propeller blades.
propeller governor
What is the primary function of the reduction gearbox in a turboprop engine?
To reduce the high rotational speed of the turbine to a suitable speed for the propeller.
Multiple Choice: What is a common turboprop engine model? A) Pratt & Whitney PT6 B) Rolls-Royce Trent C) General Electric CF6
A) Pratt & Whitney PT6
What is the typical maintenance interval for turboprop engines?
Usually scheduled every 3,000 to 5,000 flight hours.
