US 2020/0346746 A1 · MULTI-ROTOR ROTORCRAFT

Abstract

Multi-rotor rotorcraft (10) comprise a fuselage (12), and at least four rotor assemblies (14) operatively supported by and spaced-around the fuselage (12). Each of the at least four rotor assemblies (14) defines a spin volume (24) and a spin diameter (26). Some multi-rotor rotorcraft (10) further comprise at least one rotor guard (50) that is fixed relative to the fuselage (12), that borders the spin volume (24) of at least one of the at least four rotor assemblies (14), and that is configured to provide a visual indication of the spin volume (24) of the at least one of the at least four rotor assemblies (14). Various configurations of rotor guards (50) are disclosed.

Claims22

Dependent claims

A multi-rotor rotorcraft (10), comprising:

a fuselage (12);
at least four rotor assemblies (14) operatively supported by and spaced-around the fuselage (12), wherein each of the at least four rotor assemblies (14) defines a spin volume (24) and a spin diameter (26);
and
at least one rotor guard (50) that is fixed relative to the fuselage (12), that borders the spin volume (24) of at least one of the at least four rotor assemblies (14), and that is configured to provide a visual indication of the spin volume (24) of the at least one of the at least four rotor assemblies (14), wherein the at least one rotor guard (50) comprises at least one combined rotor guard (56) that at least partially borders the spin volume (24) of more than one of the at least four rotor assemblies (14).

1 more element

A multi-rotor rotorcraft (10), comprising:

a fuselage (12), wherein the fuselage (12) comprises an internal compartment (16) and an access door (18) having a door-width (22) that provides selective access to the internal compartment (16);
six rotor assemblies (14) operatively supported by and spaced-around the fuselage (12), wherein each of the six rotor assemblies (14) defines a spin volume (24) and a spin diameter (26), wherein each of the six rotor assemblies (14) comprises a pair of co-axial rotors (42), and wherein the six rotor assemblies (14) comprise:
a first pair (20) of rotor assemblies (14) positioned on opposing lateral sides of the fuselage (12);
a second pair (34) of rotor assemblies (14) positioned on the opposing lateral sides of the fuselage (12);
and
a third pair (38) of rotor assemblies (14) positioned on the opposing lateral sides of the fuselage (12) between the first pair (20) of rotor assemblies (14) and the second pair (34) of rotor assemblies (14);
a first pair (30) of elongate support arms (32), each interconnecting a respective one of the first pair (20) of rotor assemblies (14) to the fuselage (12), wherein each elongate support arm (32) of the first pair (30) of elongate support arms (32) extends along a respective curved path between the fuselage (12) and the respective one of the first pair (20) of rotor assemblies (14);
a second pair (36) of elongate support arms (32), each interconnecting a respective one of the second pair (34) of rotor assemblies (14) to the fuselage (12), wherein each elongate support arm (32) of the second pair (36) of elongate support arms (32) extends along a respective curved path between the fuselage (12) and the respective one of the second pair (34) of rotor assemblies (14);
a pair of aerodynamic structures (40) extending from opposing lateral sides of the fuselage (12), each supporting a respective one of the third pair (38) of rotor assemblies (14);
and
six circular rotor guards (52), each encircling the spin volume (24) of one of the co-axial rotors (42) of the six rotor assemblies (14).

8 more elements

Dependencies are inferred from the claim text.

Multi-rotor rotorcraft

Life of this patent

Multi-rotor rotorcraft

Life of this patent

Abstract

Claims22