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公开(公告)号：US20200317331A1
公开(公告)日：2020-10-08
申请号：US16886000
申请日：2020-05-28
Applicant: Bell Textron Inc.
Inventor： Carlos Fenny , Thomas Dewey Parsons, JR. , Erik John Oltheten
Abstract: The present invention includes an a plurality of first variable speed motors mounted on a tail boom of the helicopter; one or more fixed pitch blades attached to each of the plurality of first variable speed motors; and wherein a speed of one or more of the plurality of first variable speed motors is varied to provide an anti-torque thrust.
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