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    • 10. 发明授权
    • Tip turbine engine with multiple fan and turbine stages
    • 具有多个风扇和涡轮级的涡轮发动机
    • US08104257B2
    • 2012-01-31
    • US11719589
    • 2004-12-01
    • James W. NorrisCraig A. NordeenGary Roberge
    • James W. NorrisCraig A. NordeenGary Roberge
    • F02C3/045
    • F02C3/14F01D5/022F02C3/067F02C3/073F02K3/068F02K3/072F05D2260/40311Y02T50/673
    • A tip turbine engine (10) provides first and second turbines (32) rotatably driven by a combustor (30) generating a high-energy gas stream. The first turbine (32) is mounted at an outer periphery of a first fan (24a), such that the first fan is rotatably driven by the first turbine (32a). The second turbine (32b) is mounted at an outer periphery of a second fan (24b), and is rotatably driven by the high-energy gas stream. In one embodiment, the first turbine (32a) rotatably drives a plurality of stages of first compressor blades (54) in an axial compressor (22) in a first rotational direction, while the second turbine (32b) rotatably drives a plurality of stages of second compressor blades (52) in the axial compressor (22) in a second rotational direction opposite the first. By rotatably driving alternating stages of compressor blades in opposite directions, the efficiency of the axial compressor (22) is increased and/or the number of stages of compressor blades can be reduced. Other variations are described in additional embodiments.
    • 顶端涡轮发动机(10)提供由可产生高能气流的燃烧器(30)可旋转地驱动的第一和第二涡轮机(32)。 第一涡轮(32)安装在第一风扇(24a)的外周,使得第一风扇由第一涡轮机(32a)旋转驱动。 第二涡轮(32b)安装在第二风扇(24b)的外周,由高能气流旋转驱动。 在一个实施例中,第一涡轮机(32a)以第一旋转方向可旋转地驱动轴向压缩机(22)中的多级第一压缩机叶片(54),而第二涡轮(32b)可旋转地驱动多个级 第二压缩机叶片(52)在轴向压缩机(22)中沿与第一压缩机相反的第二旋转方向。 通过以相反的方向旋转地驱动压缩机叶片的交替级,轴流式压缩机(22)的效率提高和/或压缩机叶片的级数可以减少。 在另外的实施例中描述了其它变型。