Aerospace Engineering Airplane Propulsion Quiz

What are the main components of an aircraft engine?

• propeller, fuel injector, spark plug, and exhaust pipe

• wings, tail, landing gear, and cockpit

• fuel tank, hydraulic system, electrical system, and avionics

• compressor, combustion chamber, turbine, and exhaust nozzle

Explain the difference between a turbojet and a turbofan engine.

• The turbojet engine has a duct surrounding the core engine, with a fan at the front, while the turbofan engine has a single propelling nozzle

• The turbojet engine has a single propelling nozzle, while the turbofan engine has a duct surrounding the core engine, with a fan at the front.

• Turbojet engines are used for military aircraft, while turbofan engines are used for commercial aircraft

• Both turbojet and turbofan engines have the same design and function

What is the purpose of a compressor in an aircraft engine?

• To increase the pressure of the incoming air

• To decrease the pressure of the incoming air

• To reduce the speed of the incoming air

• To cool down the incoming air

Describe the function of a turbine in an aircraft engine.

• It extracts energy from the hot exhaust gases to drive the compressor and accessories.

• It generates electricity for the aircraft

• It cools down the exhaust gases

• It provides air to the combustion chamber

What are the advantages of using a turbofan engine?

• Improved fuel efficiency, reduced noise levels, and lower emissions

• No impact on fuel efficiency, increased noise levels, and higher emissions

• Increased fuel consumption, higher noise levels, and higher emissions

• Reduced fuel efficiency, increased noise levels, and higher emissions

Explain the concept of bypass ratio in aircraft engines.

• Ratio of bypass air flow to core air flow

• The ratio of wing area to fuselage area

• The ratio of fuel flow to air flow

• The ratio of takeoff thrust to cruise thrust

Discuss the importance of materials used in aircraft engine design.

• The materials used in aircraft engine design are not crucial for ensuring the engine's safety

• The materials used in aircraft engine design are only important for aesthetics

• Materials used in aircraft engine design are crucial for ensuring the engine's performance, durability, and safety.

• Materials used in aircraft engine design have no impact on the engine's performance

Explain the concept of thrust-to-weight ratio in aircraft engines.

• The weight of the aircraft divided by the thrust

• The speed of the aircraft divided by the weight

• The ratio of fuel consumption to engine power

• Ratio of thrust to weight

What are the factors to consider in optimizing the performance of an aircraft engine?

• Color of the aircraft

• Air intake, fuel injection, combustion efficiency, and exhaust system design

• Number of passengers on board

• Type of music played in the cockpit