Invention Grant
- Patent Title: Redundant aircraft propulsion system using multiple motors per drive shaft
-
Application No.: US14973618Application Date: 2015-12-17
-
Publication No.: US10086933B2Publication Date: 2018-10-02
- Inventor: Nicholas Hampel Roberts , Dominic Timothy Shiosaki , Ricky Dean Welsh
- Applicant: Amazon Technologies, Inc.
- Applicant Address: US WA Seattle
- Assignee: Amazon Technologies, Inc.
- Current Assignee: Amazon Technologies, Inc.
- Current Assignee Address: US WA Seattle
- Agency: Lee & Hayes, PLLC
- Main IPC: B64C27/14
- IPC: B64C27/14 ; B64C27/46 ; B64C11/48 ; B64C39/02 ; B64C11/18 ; B64D27/26 ; B64D27/02

Abstract:
Multiple motors may drive (rotate) a single shaft coupled to a propeller. The motors may be selected such that a first motor is capable of rotating the drive shaft in an event of a failure of a second motor coupled to the drive shaft. A one-way clutch bearing, or similar device, may interface between a motor and the drive shaft to enable free rotation of the drive shaft in an event of the motor becoming inoperable, such as the motor freezing or locking in a position due to failure caused by overheating or caused by other conditions or events. Use of the second motor may secure a position of the drive shaft which may support the propeller in radial eccentric loading.
Public/Granted literature
- US20170174337A1 Redundant Aircraft Propulsion System Using Multiple Motors Per Drive Shaft Public/Granted day:2017-06-22
Information query