An aerial vehicle includes an aerial vehicle body, and first and second rotor assemblies. The first rotor assembly includes a first hub coupled to first blades, and a first drive shaft coupled to the first hub via fastening features. The first drive shaft is configured to rotate the first hub in a first direction such that the first blades rotate in a first rotation plane. The second rotor assembly includes a second hub coupled to second blades, and a second drive shaft coupled to the second hub via fastening features. The second drive shaft is configured to rotate the second hub in a second direction opposite to the first direction, such that the second blades rotate in a second rotation plane. The first and second rotation planes are at opposite sides of the aerial vehicle body.

An aerial vehicle includes an aerial vehicle body, and first and second rotor assemblies. The first rotor assembly includes a first hub coupled to first blades, and a first drive shaft coupled to the first hub via fastening features. The first drive shaft is configured to rotate the first hub in a first direction such that the first blades rotate in a first rotation plane. The second rotor assembly includes a second hub coupled to second blades, and a second drive shaft coupled to the second hub via fastening features. The second drive shaft is configured to rotate the second hub in a second direction opposite to the first direction, such that the second blades rotate in a second rotation plane. The first and second rotation planes are at opposite sides of the aerial vehicle body.

The invention relates to an electric motor with an integrated cooling device, which uses in particular bleed air as the primary coolant for cooling components of the stator and/or the rotor. Ambient air accelerated by the propulsion means, for example by a propeller, that is driven by the electric motor is used here as the bleed air. A channel system is integrated within the stator housing that has one or more channels for the targeted feed of the primary coolant to the component to be cooled. In the case of cooling the stator, a heat exchanger is also integrated within the stator housing, for example an annular heat exchanger that is arranged coaxially with respect to the stator and to which the primary coolant is fed. For cooling the rotor, a coolant passage is provided that also includes the air gap of the electric machine, for example.

A fan blade support assembly for an aircraft is generally disclosed. The fan blade support assembly includes a fan assembly having a plurality of fan blades, a power shaft extending between the fan assembly and an engine of the aircraft, and a housing assembly positioned around the power shaft. The housing assembly includes a convergent housing and a sealing shroud. The convergent housing includes a cap, a base, and a middle portion extending therebetween. The base defines a first diameter, and the cap defines a second diameter less than the first diameter. The sealing shroud is positioned between the convergent housing and the power shaft. A gap is defined between the sealing shroud and the power shaft.

A fan blade support assembly for an aircraft is generally disclosed. The fan blade support assembly includes a fan assembly having a plurality of fan blades, a power shaft extending between the fan assembly and an engine of the aircraft, and a housing assembly positioned around the power shaft. The housing assembly includes a convergent housing and a sealing shroud. The convergent housing includes a cap, a base, and a middle portion extending therebetween. The base defines a first diameter, and the cap defines a second diameter less than the first diameter. The sealing shroud is positioned between the convergent housing and the power shaft. A gap is defined between the sealing shroud and the power shaft.

A propulsion system includes a driving device and a propeller coupled with the driving device. The driving device includes a body portion and a lock portion disposed on the body portion. The lock portion includes a first snap-fitting portion. The propeller includes a hub having a receiving hole, a plurality of blades connected to the hub, and a second snap-fitting portion arranged on an inner wall of the receiving hole and configured to snap with the first snap-fitting portion.

A propulsion system includes a driving device and a propeller coupled with the driving device. The driving device includes a body portion and a lock portion disposed on the body portion. The lock portion includes a first snap-fitting portion. The propeller includes a hub having a receiving hole, a plurality of blades connected to the hub, and a second snap-fitting portion arranged on an inner wall of the receiving hole and configured to snap with the first snap-fitting portion.

A corrugated lift fan rotor is disclosed. In various embodiments, a rotor includes an upper skin, a lower skin, and an at least partly corrugated core encased between the upper skin and the lower skin. In some embodiments, the core comprises a composite material, such as carbon fiber reinforced polymer composite material, and includes an upper cap portion, a lower cap portion, and a web portion extending between the upper and lower cap portions.

A corrugated lift fan rotor is disclosed. In various embodiments, a rotor includes an upper skin, a lower skin, and an at least partly corrugated core encased between the upper skin and the lower skin. In some embodiments, the core comprises a composite material, such as carbon fiber reinforced polymer composite material, and includes an upper cap portion, a lower cap portion, and a web portion extending between the upper and lower cap portions.

A propulsion system assembly includes a propeller, a motor configured to drive the propeller to rotate, and a locking mechanism configured to detachably lock the propeller to the motor. The propeller includes one of a first body and a second body. The motor includes another one of the first body and the second body. The locking mechanism includes a coupling member including a femoral position groove, a fastener configured to fix the coupling member to the second body, and a locking member configured to lock the first body to the coupling member and the second body. A bottom portion of the first body that contacts the coupling member includes a protruding rib configured to fit with the femoral position groove to restrain the first body from rotating relative to the coupling member.