Invention Grant
- Patent Title: Multirotor aircraft with a thrust producing unit that comprises an aerodynamically optimized shrouding
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Application No.: US17113424Application Date: 2020-12-07
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Publication No.: US11465733B2Publication Date: 2022-10-11
- Inventor: Christian Reichensperger , Uwe Kiesewetter , Petr Schejbal , Lukasz Paluszek , Klaus Kicker , Martin Blacha
- Applicant: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
- Applicant Address: DE Donauworth
- Assignee: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
- Current Assignee: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
- Current Assignee Address: DE Donauworth
- Agency: Brooks Kushman P.C.
- Priority: EP18400014 20180613
- Main IPC: B64C11/00
- IPC: B64C11/00 ; B64C11/46

Abstract:
A multirotor aircraft with an airframe that extends in a longitudinal direction, and with at least one thrust producing unit for producing thrust in a predetermined thrust direction, wherein the at least one thrust producing unit comprises a shrouding that is associated with at least one rotor assembly comprising at least one electrical engine, wherein the shrouding defines a cylindrical air duct that is axially delimited by an air inlet region and an air outlet region, wherein a cantilever is mounted at a leading edge region of the cylindrical air duct to the shrouding such that the cantilever is arranged inside of the cylindrical air duct and oriented at least essentially in parallel to the longitudinal direction, wherein the shrouding comprises a forward beam which connects the cantilever to the airframe, the forward beam being arranged outside of the cylindrical air duct and comprising a forward flange that is rigidly attached to the airframe, wherein the at least one electrical engine is mounted to the cantilever, and wherein the cylindrical air duct is provided in opened perimeter configuration, the shrouding being at least partly cut-off in the opened perimeter configuration at a trailing edge region of the cylindrical air duct over a predetermined opening angle.
Public/Granted literature
- US20210316841A1 MULTIROTOR AIRCRAFT WITH A THRUST PRODUCING UNIT THAT COMPRISES AN AERODYNAMICALLY OPTIMIZED SHROUDING Public/Granted day:2021-10-14
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