Title:
【発明の名称】折り畳み式プロペラ
Document Type and Number:
Japanese Patent JP2000500086
Kind Code:
A
Abstract:
A foldable propeller for a ship having a hub (2) for mounting on a drive shaft of the ship, and at least two skew-type blades (1), each of which is pivotably arranged in the hub (2) for configuration between a first, essentially folded together position and a second, essentially unfolded position, wherein each blade (1) presents a generator line (8). Each of the blades (1) has a skew distribution such that the leading edge of the inner and outer radii, respectively, are located substantially forward and aft of the generator line (8) of the blade (1). The mid-chord line (10) of the propeller extends substantially forward and aft of the generator line (8) of the blade (1). A foldable propeller with such blade geometry provides improved performance; in particular, ready unfolding, high reverse thrust and low noise and vibration.
Inventors:
Johnson Christer
Gus Tubson Blur
Gus Tubson Blur
Application Number:
JP50605697A
Publication Date:
January 11, 2000
Filing Date:
November 27, 1996
Export Citation:
Assignee:
Arbor volvo penta
International Classes:
B63B1/22; B63H1/24; (IPC1-7): B63B1/22
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)