摘要:
A variable toroidal propeller (10) is proposed, wherein the propeller (10) comprises: a hub (12) and a toroidal propeller blade (14) connected to the hub (12). The hub (12) is arranged to operationally couple the blade (14) to an actuator (44), and the blade (14) is arranged to deform at an activation of the actuator (44).
摘要:
The present invention relates to a variable-pitch propeller capable of changing a blade pitch according to the sailing conditions of a ship and, specifically, to a controllable pitch propeller having an optimal hub-to-tip diameter ratio, the propeller being capable of reducing the size of a hub so as to have a high efficiency that is close to the propulsion efficiency of a fixed pitch propeller (FPP). In order to accomplish the aforementioned objective, the present invention relates a controllable pitch propeller which comprises a hub mounted at the propelling shaft of a ship, and a blade that is mounted at the circumference of the hub and that has a variable pitch, and which is technically characterized by a H/D ratio, of diameter (H) of the propeller and diameter (D) of the hub, of 0.170-0.2.
摘要:
A pitch angle indicator system indicates a pitch angle of blades of a propeller of a marine propulsion unit. A mechanical link couples at least one of the blades to a first end of a first rod. An indicator is coupled to a second end of the first rod. The mechanical link is configured to convert a change in the pitch angle into a rotation of the first rod about its longitudinal axis. The indicator is configured to provide an indication of the amount of rotation of the first rod about the longitudinal axis.
摘要:
The invention relates to an energy-generating and/or propulsion device (1) comprising: a rotary propeller; an annular support (10); and blades (20) comprising a first end forming a base and a second end forming a vertex, the blades being pivotably mounted in a freely rotating manner on the inner face of the annular support in the region of the base thereof, via an articulation arranged such that the blades are self-adjustable.
摘要:
The invention relates to a method for the operation of a marine propeller (1) comprising the following steps: - detection, by means of a sensor (11), of noise on a solid body (1, 4, 8) caused by gas cavitation and/or pseudocavitation, - transmission of a measurement signal of the sensor (11) by means of a contactless transmission method from the sensor (11) to a signal processing unit, and - generation of control commands by the signal processing unit depending on the received measurement signal to change the propeller speed by means a drive motor and/or to change the angle of attack of the blade of the marine propeller (1) by means of an actuator.