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The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. [1] A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for every 1 kg of air passing through the core.
The GE90-115B diameter is 128 in (325 cm) while the 777 fuselage is 244 in (620 cm) The GE90's 10-stage high-pressure compressor developed a then-industry record pressure ratio of 23:1 and is driven by a 2-stage, air-cooled, HP turbine. A 3-stage low-pressure compressor, situated directly behind the fan, supercharges the core.
Turbofan engines with a bypass ratio of at least 4. Pages in category "High-bypass turbofan engines" The following 49 pages are in this category, out of 49 total.
The GE Passport is a high bypass ratio turbofan. The engine is a twin-spool, axial-flow turbofan with a high bypass ratio of 5.6:1 and an overall pressure ratio of 45:1. The front fan is attached to the three-stage low-pressure compressor; the 23:1 pressure ratio 10-stage high-pressure compressor includes five blisk stages for weight reduction.
The CF6-80E1 has the highest thrust power of CF6-80 Series family, with the fan tip diameters increased to 96.2 in (2.443m), and an overall pressure ratio of 32.6 and bypass ratio of 5.3. [8] The 68,000 to 72,000 lbf (300 to 320 kN) variant competes with the Rolls-Royce Trent 700 and the Pratt & Whitney PW4000 to power the Airbus A330 .
Turbofan engines with a bypass ratio of between 2 and 4. Pages in category "Medium-bypass turbofan engines" The following 17 pages are in this category, out of 17 total.
It reached a 40% market share, [23] ahead of the competing PW4000 and GE90, and the last Trent-powered 777 was delivered in 2010. [24] The Trent 800 has the Trent family three shaft architecture, with a 280 cm (110 in) fan. [25] With a 6.4:1 bypass ratio and an overall pressure ratio reaching 40.7:1, it generates up to 413.4 kN (92,900 lbf) of ...
When the ratio gets above or below 0.8, it is considered abnormal ventilation-perfusion coupling, also known as a ventilation–perfusion mismatch. [3] Lung diseases, cardiac shunts, and smoking can cause a ventilation–perfusion mismatch that results in significant symptoms and diseases; treatments include bronchodilators and oxygen therapy.