发明公开
- 专利标题： THRUST RING AND ROTOR FAN SYSTEM
- 专利标题（中）： 推力环和转子风扇系统
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申请号： EP17194522.3申请日： 2017-10-03
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公开(公告)号： EP3315787A1公开(公告)日： 2018-05-02
- 发明人: Power, Bronwyn , Rivers, Jonathan
- 申请人： Rolls-Royce Corporation
- 申请人地址： 450 South Meridian Street Indianapolis, Indiana 46225 US
- 专利权人： Rolls-Royce Corporation
- 当前专利权人： Rolls-Royce Corporation
- 当前专利权人地址： 450 South Meridian Street Indianapolis, Indiana 46225 US
- 代理机构： Rolls-Royce plc
- 优先权： US201615338035 20161028
- 主分类号： F04D29/32
- IPC分类号： F04D29/32 ; B64C11/00 ; F01D5/14 ; F01D5/22 ; F02K3/04 ; F02K3/072 ; F02C9/58 ; B64D27/00
摘要：
A fan system includes a rotor having plurality of blades and a ring airfoil, the plurality of blades being rotatably joined to a hub and the ring airfoil. The fan system may include a second contra-rotationally disposed rotor having a plurality of blades and a ring airfoil. The first and second ring airfoils having a cambered shape and an angle of attack between about -5 degrees and about 45 degrees, more preferably between about 5 degrees and about 30 degrees. Optionally, an outlet guide vane may be mounted rearward of the one or more rotors having a ring airfoil.
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