Title:
翼端コネクタにより接合される共回転プロペラを使用する冗長航空機推進装置
Document Type and Number:
Japanese Patent JP6612986
Kind Code:
B2
Abstract:
Multiple propeller blades may be joined by tip connectors to form a closed propeller apparatus. The tip connectors may create continuous structure between adjacent tips of a first propeller and a second propeller. Use of the tip connectors may reduce vortices created near the tips of the propeller blades, which cause drag and slow the rotation of the propeller blades. The tip connectors may also reduce noise caused by rotation of propeller blades. Further, the tip connectors reduce or eliminate deflection of the propeller blades by creating a support structure to counteract forces that would otherwise cause deflection of the propeller blades, thereby improving propeller blade loading. In some embodiments, the tip connectors may be formed of a malleable material and/or include one or more joints that enable at least one of the propellers to modify a pitch of blades of the propeller.
Inventors:
Nicholas Hampel Roberts
Dominic Timothy Shiosaki
Ricky Dean Welsh
Dominic Timothy Shiosaki
Ricky Dean Welsh
Application Number:
JP2018531214A
Publication Date:
November 27, 2019
Filing Date:
December 15, 2016
Export Citation:
Assignee:
Amazon Technologies, Inc.
International Classes:
B64C27/10; B64C1/00; B64C11/06; B64C11/20; B64C11/48; B64C39/02; B64D27/24
Foreign References:
| US1888681 | ||||
| DE102006056356A1 | ||||
| US20040129833 | ||||
| US1889717 | ||||
| CN203428028U |
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office