Invention Grant
- Patent Title: System of contra-rotating propellers driven by a planetary gear train providing a balanced distribution of torque between the two propellers
- Patent Title (中): 由行星齿轮系驱动的反转螺旋桨系统，提供两个螺旋桨之间的平衡扭矩分配
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Application No.: US13139539Application Date: 2009-12-17
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Publication No.: US08876462B2Publication Date: 2014-11-04
- Inventor: Wouter Balk , Gilles Alain Charier , Francois Gallet
- Applicant: Wouter Balk , Gilles Alain Charier , Francois Gallet
- Applicant Address: FR Paris
- Assignee: Snecma
- Current Assignee: Snecma
- Current Assignee Address: FR Paris
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0858822 20081219
- International Application: PCT/EP2009/067446 WO 20091217
- International Announcement: WO2010/070066 WO 20100624
- Main IPC: F01D1/26
- IPC: F01D1/26 ; F02C3/067 ; F02K3/072 ; F02C7/36 ; B64C11/48
Abstract:
A system of contra-rotating propellers for an aircraft turbomachine, including: a free power turbine including a first rotor; first and second propellers; and a mechanical transmission system including a planetary gear train fitted with a sun gear driven by the rotor, at least one planet gear driving the first propeller, and a ring driving the second propeller. The free power turbine also includes a second rotor that is contra-rotating relative to the first rotor, and rotating the ring.
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