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公开(公告)号：EP0215758A1
公开(公告)日：1987-03-25
申请号：EP86850294.9
申请日：1986-09-08
申请人： AB VOLVO PENTA
发明人： Brandt, Lennart H.
CPC分类号： B63H5/10
摘要： The invention relates to a boat propeller unit (1) with double, counter-rotating propellers (8,9). The forward propeller (9) is designed to function without cavitation, while the after-propeller (8) is optimally cavitating by being made cupped and with a blade width of between 60% and 75% of the blade width of the forward propeller.
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2.发明公开Propeller combination with non-cupped blades for a boat propeller unit 失效Schraubenkombination mit besonderer Schaufelformfüreinen Bootschraubenantrieb。
公开(公告)号：EP0457746A1
公开(公告)日：1991-11-21
申请号：EP91850124.8
申请日：1991-05-14
申请人： AB VOLVO PENTA
发明人： Brandt, Lennart H.
IPC分类号： B63H5/10
CPC分类号： B63H5/10
摘要： The invention relates to a boat propeller unit with double, counter-rotating propellers. The forward propeller is designed to function without cavitation, while the after-propeller is at least partially cavitating, being non-cupped, and being made with a blade width of between 60% and 75% of the blade width of the forward propeller.
摘要翻译： 本发明涉及具有双重反向旋转螺旋桨的船用螺旋桨单元。 前进螺旋桨被设计成没有气蚀而起作用，而后推进器至少部分气蚀，不是杯形的，并且具有叶片宽度在前进螺旋桨的叶片宽度的60％至75％之间。
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公开(公告)号：EP0215758B1
公开(公告)日：1988-12-21
申请号：EP86850294.9
申请日：1986-09-08
申请人： AB VOLVO PENTA
发明人： Brandt, Lennart H.
CPC分类号： B63H5/10
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