Abstract: A propulsion device for exerting thrust to a fluid comprises a central hub and at least two propulsive arrangements which protrude radially from the hub. Each propulsive arrangement comprises front and rear propulsive elements extending from a front inner end to a front outer end and from a rear inner end to a rear outer end, respectively. Inner and outer guide elements extend from the front end to the rear end. An elongate front distance member and an elongate rear distance member extend radially from the hub to the inner guide element. At least one intermediate propulsive element is arranged between the front and rear propulsive elements and extends radially from the inner guide element to the outer guide element. The inner guide element, the front distance member, the rear distance member and the periphery of the hub define an open space allowing free passage of the fluid.

Abstract: A self-adjusting variable pitch propeller included a central hub with an axial propeller centre line defining the rotational axis of the propeller. A plurality of blades extend radially from the hub. The hub exhibits a central bore arranged to receive a rotating drive shaft. Each blade is pivotally fixed to the hub and pivotal about a respective blade pivot axis which extends radially from the hub through the respective blade. Each blade exhibits a leading edge, a trailing edge, a pressure side exhibiting a pressure side area and a suction side exhibiting a suction side area. The blades are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades. The pivotal axis of each blade is positioned such that >50% of the suction side area and of the pressure side area is arranged between the trailing edge and the pivotal axis of the respective blade.

Abstract: A self-adjusting variable pitch propeller comprises a central hub with an axial propeller centre line defining the rotational axis of the propeller. A plurality of blades extend radially from the hub. The hub exhibits a central bore arranged to receive a rotating drive shaft. Each blade is pivotally fixed to the hub and pivotal about a respective blade pivot axis which extends radially from the hub through the respective blade. Each blade exhibits a leading edge, a trailing edge, a pressure side exhibiting a pressure side area and a suction side exhibiting a suction side area. The blades are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades. The pivotal axis of each blade is positioned such that >50% of the suction side area and of the pressure side area is arranged between the trailing edge and the pivotal axis of the respective blade.

Abstract: In an annular torsional rigid static component for an aircraft engine, the component includes at least one arrangement for mounting the engine to an aircraft. The mounting arrangement comprises a body formed in a composite material.

Abstract: In an annular torsional rigid static component for an aircraft engine, the component includes at least one arrangement for mounting the engine to an aircraft. The mounting arrangement comprises a body formed in a composite material.