Title:
航空機用推進エンジン
Document Type and Number:
Japanese Patent JP6442548
Kind Code:
B2
Abstract:
A propulsion system (100) for an aircraft (10) is provided having a propulsion engine configured to be mounted to the aircraft (10). The propulsion engine includes an electric machine defining an electric machine tip speed during operation. The propulsion system (100) additionally includes a fan (304) rotatable about a central axis (302) of the electric propulsion engine with the electric machine. The fan (304) defines a fan pressure ratio, R FP , and includes a plurality of fan blades (328), each fan blade (328) defining a fan blade tip speed. The electric propulsion engine defines a ratio of the fan blade tip speed to electric machine tip speed that is within twenty percent of the equation, 1.68 x R FP - 0.518, such that the propulsion engine may operate at a desired efficiency.
Inventors:
Daniel Alan Niagars
Randy M von Drel
Brandon Wayne Miller
Patrick Michael Marinan
Randy M von Drel
Brandon Wayne Miller
Patrick Michael Marinan
Application Number:
JP2017077896A
Publication Date:
December 19, 2018
Filing Date:
April 11, 2017
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B64D27/24; B64D35/00; F01D15/10; F02C6/00
Domestic Patent References:
| JP2003286857A | ||||
| JP61275550A | ||||
| JP11034990A | ||||
| JP11200888A | ||||
| JP58012899A | ||||
| JP2012505113A | ||||
| JP2017071387A |
Foreign References:
| US20150000252 | ||||
| US4815273 | ||||
| US20150284071 | ||||
| US6247668 | ||||
| US20130094963 | ||||
| EP1069044A1 | ||||
| US20100219779 | ||||
| EP3153401A1 |
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka
Previous Patent: 発見されたサービスプロバイダに属するサービスにアクセスする方法およ...
Next Patent: LOW THERMAL EXPANSION ALUMINUM-SILICON ALLOY
Next Patent: LOW THERMAL EXPANSION ALUMINUM-SILICON ALLOY