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Matches in DBpedia 2016-04 for { ?s ?p "The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of air drawn through the fan disk that bypasses the engine core (un-combusted air) to the mass flow rate passing through the engine core. For example, a 10:1 bypass ratio means that 10 kg of air passes around the core for every 1 kg of air passing through the core.The flow from the fan nozzle, rather than the core exhaust from the hot nozzle, produces most of the thrust in high-bypass designs. Bypass provides a lower thrust specific fuel consumption (grams/sec fuel per unit of thrust in kN using SI units) for reasons explained below, especially at zero velocity (at takeoff) and at the cruise speed of the aircraft; also, the lower exhaust velocities reduce jet noise. Lower fuel consumption that comes with high bypass ratios applies to turboprops, using a propeller rather than an enclosed fan. High bypass designs are the dominant type for commercial passenger aircraft and both civilian and military jet transports.Military combat aircraft usually use engines with low bypass ratios to compromise between fuel economy and the requirements of combat: high power-to-weight ratios, supersonic performance, and the ability to use afterburners, all of which are more compatible with low bypass engines."@en }

• Bypass_ratio abstract "The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of air drawn through the fan disk that bypasses the engine core (un-combusted air) to the mass flow rate passing through the engine core. For example, a 10:1 bypass ratio means that 10 kg of air passes around the core for every 1 kg of air passing through the core.The flow from the fan nozzle, rather than the core exhaust from the hot nozzle, produces most of the thrust in high-bypass designs. Bypass provides a lower thrust specific fuel consumption (grams/sec fuel per unit of thrust in kN using SI units) for reasons explained below, especially at zero velocity (at takeoff) and at the cruise speed of the aircraft; also, the lower exhaust velocities reduce jet noise. Lower fuel consumption that comes with high bypass ratios applies to turboprops, using a propeller rather than an enclosed fan. High bypass designs are the dominant type for commercial passenger aircraft and both civilian and military jet transports.Military combat aircraft usually use engines with low bypass ratios to compromise between fuel economy and the requirements of combat: high power-to-weight ratios, supersonic performance, and the ability to use afterburners, all of which are more compatible with low bypass engines.".
• Q1973494 abstract "The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of air drawn through the fan disk that bypasses the engine core (un-combusted air) to the mass flow rate passing through the engine core. For example, a 10:1 bypass ratio means that 10 kg of air passes around the core for every 1 kg of air passing through the core.The flow from the fan nozzle, rather than the core exhaust from the hot nozzle, produces most of the thrust in high-bypass designs. Bypass provides a lower thrust specific fuel consumption (grams/sec fuel per unit of thrust in kN using SI units) for reasons explained below, especially at zero velocity (at takeoff) and at the cruise speed of the aircraft; also, the lower exhaust velocities reduce jet noise. Lower fuel consumption that comes with high bypass ratios applies to turboprops, using a propeller rather than an enclosed fan. High bypass designs are the dominant type for commercial passenger aircraft and both civilian and military jet transports.Military combat aircraft usually use engines with low bypass ratios to compromise between fuel economy and the requirements of combat: high power-to-weight ratios, supersonic performance, and the ability to use afterburners, all of which are more compatible with low bypass engines.".