Propeller for use on ship or aeroplane

摘要

The propeller may be used on a ship or an aeroplane, but preferably a manned aeroplane. There are one or more blades (44) that have an adjustable device to adjust the climb angle of the blades during its operation. A folding device (32,42) is shown, with the blades in a rotational axis (29) with the propeller (18) in a parallel orientation. The blades on the folding axis may be orientation a free hinge on the hub (20) of the propeller. The folding axis may be travelling in a direction approximately tangential to the rotational axis of the propeller.