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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11932125 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

Nov. 29, 2021

Rotor break effect by using electric distributed anti-torque generators and opposing electric motor thrust to slow a main rotor

Applicant:

Textron Innovations Inc., Providence, RI (US);

Inventors:

Andrew Haldeman, Fort Worth, TX (US);

Eric A. Sinusas, Euless, TX (US);

Frank Bradley Stamps, Colleyville, TX (US);

Assignee:

TEXTRON INNOVATIONS INC., Providence, RI (US);

Attorneys:

Daniel J. Chalker

Edwin S. Flores

Chalker Flores, LLP

Primary Examiner:

Christopher D Hutchens

Int. Cl.
CPC ...
B60L 53/12 (2019.01); B64C 27/06 (2006.01); B64C 27/12 (2006.01); B64C 27/82 (2006.01); B64D 27/24 (2006.01); H02P 3/04 (2006.01); H02P 3/14 (2006.01); B64D 27/02 (2006.01);
U.S. Cl.
CPC ...
B60L 53/12 (2019.02); B64C 27/06 (2013.01); B64C 27/12 (2013.01); B64C 27/82 (2013.01); B64D 27/24 (2013.01); H02P 3/04 (2013.01); H02P 3/14 (2013.01); B64C 2027/8209 (2013.01); B64C 2027/8227 (2013.01); B64C 2027/8236 (2013.01); B64C 2027/8254 (2013.01); B64D 27/026 (2024.01); B64D 2221/00 (2013.01);
Abstract

A system and method for slowing the rotation of a rotor using, for example, rotor brake system for a rotorcraft comprises: one or more generators connected to a main rotor gearbox; an electric distributed anti-torque system mounted on a tail boom of the rotorcraft comprising two or more electric motors connected to the one or more generators, wherein the two or more electric motors are connected to one or more blades; and wherein a rotation of the rotor is slowed by placing a drive load on the main rotor gearbox with the one or more generators to bleed the mechanical power from rotor into electrical power via the two or more electric motors, wherein the electric distributed anti-torque system generates thrust in opposing directions.

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