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    • 29. 发明申请
    • THRUST EFFICIENT TURBOFAN ENGINE
    • 高效的涡轮发动机
    • WO2014197075A2
    • 2014-12-11
    • PCT/US2014027105
    • 2014-03-14
    • UNITED TECHNOLOGIES CORP
    • SABNIS JAYANT
    • F02K1/15F02K1/16F02K3/06
    • F02K3/06F02C7/36F05D2260/40311
    • A disclosed turbofan engine includes a gas generator section for generating a gas stream flow. A speed reduction device is driven by the power turbine. A propulsor section includes a fan driven by the power turbine through the speed reduction device at a second speed lower than the first speed for generating propulsive thrust as a mass flow rate of air through a bypass flow path. The fan includes a tip diameter greater than about fifty (50) inches and an Engine Unit Thrust Parameter ("EUTP") defined as net engine thrust divided by a product of the mass flow rate of air through the bypass flow path, a tip diameter of the fan and the first rotational speed of the power turbine is less than about 0.30 at a take-off condition.
    • 所公开的涡轮风扇发动机包括用于产生气流流的气体发生器部分。 减速装置由动力涡轮驱动。 推进器部分包括由动力涡轮通过减速装置驱动的风扇,其速度低于用于产生推进推力的第一速度,作为通过旁通流动路径的空气的质量流率。 风扇包括大于约五十(50)英寸的尖端直径,以及定义为净发动机推力的发动机单元推力参数(“EUTP”)除以通过旁通流路的空气质量流量的乘积, 的风扇和动力涡轮机的第一转速在起飞条件下小于约0.30。