Is a
Patent attributes
Patent Applicant
Patent Jurisdiction
Patent Number
Date of Patent
August 3, 2021
Patent Application Number
20190422
Date Filed
April 22, 2019
Patent Citations Received
Patent abstract
An electric ducted fan for an aircraft is shown. A nacelle defines a duct that houses a propulsive fan having a fan diameter DF. An electric machine is configured to drive the fan, and has an electromagnetically active length LA and an electromagnetically active diameter DA defining an aspect ratio (LA/DA) of from 0.8 to 2. A speed reduction device is located between the electric machine and the fan, and has a reduction ratio of at least 3:1. A ratio of the electromagnetically active diameter DA to the fan diameter DF (DA/DF) is from 0.3 to 0.5.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
