Abstract

A propeller for an aircraft includes at least two blades, arranged about a central hub, which is coupled to at least one motor, driven by a power source. At least one blade is attached to at least one sleeve member, configured for being in an outer sliding connection to a first cylindrical element of the hub. An inner surface of each of the at least one sleeve member includes at least one projecting element, configured to be in a sliding connection with a corresponding at least one first recessed guide path, arranged in an outer surface of the first cylindrical element. Each of the at least one first recessed guide path circles at least partly around the first cylindrical element from a first position to a second position. Each of the at least one sleeve member positions its blade in an operational position when its, at least one, projecting element is positioned in its corresponding first position in its designated first recessed guide path of the first cylindrical element. Each of the at least one sleeve member positions its blade in a storage position when its, at least one, projecting element is positioned in its corresponding second position in its designated first recessed guide path of the first cylindrical element. A rotation of the first cylindrical element moves each of the at least one sleeve member thereabout along their first recessed guide path. An arrangement includes the propeller and a compartment configured to accommodate the propeller. An aircraft includes at least one wing and at least one propeller.

IPC Classes  ?

• B64U 10/16 - Flying platforms with five or more distinct rotor axes, e.g. octocopters
• B64U 30/21 - Rotary wings

Abstract

The invention relates to a propeller (4) for an aircraft (1). The propeller (4) comprising at least two blades (8a–8d), arranged about a central hub (10), which is coupled to at least one motor (18), driven by a power source (22), wherein at least one blade (8a-8d) is attached to at least one sleeve member (24a-24d), configured for being in an outer sliding connection to a first cylindrical element (26) of the hub (10), wherein an inner surface (40) of each of said at least one sleeve member (24a-24b) comprises at least one projecting element (42), configured to be in a sliding connection with a corresponding at least one first recessed guide path (38a), arranged in an outer surface (44) of the first cylindrical element (26), wherein each of said at least one first recessed guide path (38a) circles at least partly around the first cylindrical element (26) from a first position to a second position, wherein each of said at least one sleeve member (24a-24d) positions its blade (8a-8b) in an operational position when its, at least one, projecting element (42) is positioned in its corresponding first position in its designated first recessed guide path (38a) of the first cylindrical element (26), wherein each of said at least one sleeve member (24a-24d) positions its blade (8a-8b) in an storage position when its, at least one, projecting element (42) is positioned in its corresponding second position in its designated first recessed guide path (38a) of the first cylindrical element (26), and wherein a rotation of the first cylindrical element (26) moves each of said at least one sleeve member (24a-24d) thereabout along their first recessed guide path (38a). The invention also relates to an arrangement comprising a propeller (4) according to any one of claims 1 to 12, wherein the arrangement further comprises a compartment (6) configured to accommodate the propeller (4). The invention also relates to an aircraft (1), comprising at least one wing (2) and at least one propeller (4).

IPC Classes  ?

• B64C 11/28 - Collapsible or foldable blades
• B64C 29/00 - Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
• B64C 39/02 - Aircraft not otherwise provided for characterised by special use

Goods & Services

Aircrafts; drones; airplanes; Fuselages [aircraft parts]; electric airplanes; Remote controlled flying objects; Structural parts for aircrafts and drones. Maintenance and repair of airplanes, aircrafts and drones; providing information relating to the repair or maintenance of airplanes, aircrafts and drones; charging of electric airplanes, electric aircrafts and drones.