Contents
What does increasing bypass ratio do?
As bypass ratio (BPR) increases the overall efficiency of the engine increase which is a primary factor that yields lower TSFC for the turbofan engine. Additionally this report shows that a high bypass ratio engine can produce a greater amount of thrust while consuming the same amount of fuel as a lower BPR engine.
How do you increase bypass ratio?
The only way to increase by-pass ratio is to accelerate the high pressure turbine and avoid energy degradation. To accelerate the high pressure turbine you need higher higher pressure and higher temperature.
What does fuel consumption depend on?
The amount of fuel consumed depends on the engine, the type of fuel used, and the efficiency with which the output of the engine is transmitted to the wheels.
What to expect if a cruise ship has engine failure?
If the engine failure is short-lived and the ship’s crew are able to restore power again quickly, the captain might make the decision to continue with the ship’s itinerary, as planned.
How does the speed of a cruise ship affect fuel consumption?
Speed affects cruise ship fuel consumption because to go faster, vessels must increase the electricity flow to motors. Thus more engines are employed, and it, in turn, increases fuel consumption. For example, Queen Mary 2 consumes 237 tons MGO and 261 tons HFO a day when at full speed.
How many diesel engines does a cruise ship have?
Modern cruise ships do not rely on one diesel engine: They have as many as six (in the case of the Oasis Class of ships).
What are the advantages of a diesel cruise ship?
The main advantage of the diesel-electric cruise ship engine systems is efficiency as they allow main engines to operate near the most efficient speed, no matter if the ship is moving at 5 or 25 knots. Losing electrical power is devastating to ships.