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Publication numberWO2009097850 A3
Publication typeApplication
Application numberPCT/DK2009/000017
Publication date21 Jan 2010
Filing date21 Jan 2009
Priority date5 Feb 2008
Also published asWO2009097850A2
Publication numberPCT/2009/17, PCT/DK/2009/000017, PCT/DK/2009/00017, PCT/DK/9/000017, PCT/DK/9/00017, PCT/DK2009/000017, PCT/DK2009/00017, PCT/DK2009000017, PCT/DK200900017, PCT/DK9/000017, PCT/DK9/00017, PCT/DK9000017, PCT/DK900017, WO 2009/097850 A3, WO 2009097850 A3, WO 2009097850A3, WO-A3-2009097850, WO2009/097850A3, WO2009097850 A3, WO2009097850A3
InventorsBjarne Flytklint
ApplicantBjarne Flytklint
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
A rotor, in particular for propellers or wind energy systems
WO 2009097850 A3
When, according to the invention, a rotor (1) for a propeller or a windmill is equipped with two-part blades (3), which are secured to the hub (2) offset to the right of a centre line (C) through the hub, and which comprise a first blade plane (4) and a laterally offset second blade plan (5), and the blade planes are arranged in such a manner that the leading edge (7) of the first blade plane extends approximately in parallel with the centre line (C) radially outwards from the centre of the hub and forms an acute angle (A) in combination with the leading edge (8) of the second blade plane, so that the leading edge (8) is disposed behind the leading edge (7) seen in relation to the direction of rotation of the hub, and when the length of the trailing edge (10) of the second blade plane is defined by a line which extends from the centre of the hub essentially perpendicularly to the trailing edge (10) of the blade plane, and by the blade tip of the blade plane, a rotor having a high efficiency and having relatively small dimensions is achieved.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
DE4134062A1 *15 Oct 19912 Apr 1992Dieter SchulzAircraft propeller with tandem blades - has each tandem pair consisting of two overlapping blades
EP0064742A2 *7 May 198217 Nov 1982Ficht GmbHRotor for a wind power station
EP0295353A1 *28 Sep 198721 Dec 1988Khammas, Achmed Adolf WolfgangRotorblade
US3032119 *26 May 19591 May 1962Hachmann HansWind power plant
International ClassificationF03D1/06, B64C11/48
Cooperative ClassificationF03D1/0608, F05B2240/301, Y02E10/721, F05B2260/96
European ClassificationF03D1/06B
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