Abstract

[Problem] To provide a drag-type turbine device with which it is possible to combine improvements in strength and performance of the device. [Solution] This drag-type turbine device 1A comprises: a support shaft 3; a plurality of support members 4 which are fixed to the support shaft 3 with a predetermined spacing therebetween in the axial direction of the support shaft 3; and a plurality of pressure-receiving members 5 which are arranged between the plurality of support members 4 in the axial direction and around the support shaft 3 in a state spaced apart from one another in the radial direction of the support shaft 3 and which are supported by the plurality of support members 4. In a plan view perpendicular to the axial direction, the pressure-receiving members 5 each include wall surface parts extending between an outer end 53 and an inner 54, specifically: an outer wall surface part 50 which extends from the outer end 53 in the direction of travel and towards the support shaft and which is formed in a convex shape that expands in the radially outer direction; an intermediate wall surface part 51 which extends from the outer wall surface part 50 in the direction of travel and towards the support shaft and which is formed in a convex or flat shape; and an inner wall surface part 52 which extends from the intermediate wall surface part 51 to the inner end 54 and which is formed in a convex or flat shape.

IPC Classes  ?

• F03D 3/06 - Rotors
• F03B 7/00 - Water wheels
• F03B 13/26 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using tide energy

Abstract

A thrust generating device has a simple structure and can effectively control the magnitude of a Magnus force generated at a cylindrical blade in accordance with the direction of a flow acting on the cylindrical blade. A Magnus-type thrust generating device includes a first member that has a first rotational axis and that can rotate about the first rotational axis; and a second member that is disposed at a rear surface side in an advancement direction of the first member 1. (M−L)/L<2 is satisfied, where L is the distance from the first rotational axis to the most distant part of the surface of the first member and M is the distance from the first rotational axis to the closest part of the surface of the second member in a plane perpendicular to the first rotational axis of the Magnus-type thrust generating device.

IPC Classes  ?

• F03D 3/00 - Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
• F03B 13/26 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using tide energy
• F03D 1/06 - Rotors
• F03D 3/06 - Rotors
• F03D 5/04 - Other wind motors the wind-engaging parts being attached to carriages running on tracks or the like
• F03G 7/00 - Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type

Abstract

[Problem] To provide a thrust generating device that has a simple structure and can effectively control the magnitude of a Magnus force generated at a cylindrical blade in accordance with the direction of a flow acting on the cylindrical blade. [Solution] Provided is a Magnus-type thrust generating device that comprises: a first member 1 that has a first rotational axis C1 and that can rotate about the first rotational axis C1; and a second member 4 that is disposed at a rear surface side in an advancement direction of the first member 1. (M - L)/L < 2 is satisfied, where L is the distance from the first rotational axis C1 to the most distant part of the surface of the first member 1 and M is the distance from the first rotational axis C1 to the closest part of the surface of the second member 4 in a plane perpendicular to the first rotational axis C1 of the Magnus-type thrust generating device.

IPC Classes  ?

• B63H 1/04 - Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction, e.g. paddle wheels
• B63H 9/02 - Marine propulsion provided directly by wind power using Magnus effect
• F01D 1/34 - Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
• F03B 5/00 - Machines or engines characterised by non-bladed rotors, e.g. serrated, using friction
• F03B 13/26 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using tide energy
• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type
• F03D 3/04 - Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels
• F03D 3/06 - Rotors
• F03D 80/00 - Details, components or accessories not provided for in groups

Abstract

[Problem] To provide a thrust generating device that has a simple structure and can effectively control the magnitude of a Magnus force generated at a cylindrical blade in accordance with the direction of a flow acting on the cylindrical blade. [Solution] Provided is a Magnus-type thrust generating device that comprises: a first member 1 that has a first rotational axis C1 and that can rotate about the first rotational axis C1; and a second member 4 that is disposed at a rear surface side in an advancement direction of the first member 1. (M - L)/L < 2 is satisfied, where L is the distance from the first rotational axis C1 to the most distant part of the surface of the first member 1 and M is the distance from the first rotational axis C1 to the closest part of the surface of the second member 4 in a plane perpendicular to the first rotational axis C1 of the Magnus-type thrust generating device.

IPC Classes  ?

• F03G 7/00 - Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
• F03B 13/26 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using tide energy
• F03D 3/06 - Rotors
• F03D 80/00 - Details, components or accessories not provided for in groups