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UniverseAlien
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With four Rolls-Royce Turbojet engines attached on A380, I wonder, if the optimization of fuel efficiency as its prime design factor/variable? If so, may I know, what it is air by pass ratio?
A bypass ratio in a turbojet engine refers to the comparison between the amount of air that passes through the engine core (where combustion occurs) and the amount of air that bypasses the core and goes directly to the exhaust. This ratio is important because it affects the overall efficiency and thrust of the engine.
The typical bypass ratio of a turbojet engine is around 5:1. This means that for every 5 units of air that enters the engine, 1 unit goes through the core while the remaining 4 units bypass the core.
The A380's turbojet engine has a bypass ratio of approximately 8:1. This is higher than the typical bypass ratio for a turbojet engine, making it more fuel efficient and quieter.
A higher bypass ratio allows for a larger volume of air to bypass the engine core, resulting in a slower and more efficient burning of fuel. This reduces fuel consumption and increases fuel efficiency.
While a higher bypass ratio can improve fuel efficiency, it also increases the size and weight of the engine, making it more expensive to produce. It can also decrease overall engine performance and limit the maximum speed of the aircraft.