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.:
Date of Patent:
May. 17, 2022
Filed:
Sep. 28, 2020
Applicant:
Textron Innovations Inc., Providence, RI (US);
Inventors:
Eric A. Sinusas, Euless, TX (US);
Erik John Oltheten, Fort Worth, TX (US);
Carlos Alexander Fenny, Fort Worth, TX (US);
Assignee:
Textron Innovations Inc., Providence, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 27/82 (2006.01); B64C 27/04 (2006.01); G05D 1/08 (2006.01);
U.S. Cl.
CPC ...
B64C 27/82 (2013.01); B64C 27/04 (2013.01); G05D 1/0858 (2013.01); B64C 2027/8209 (2013.01); B64C 2027/8227 (2013.01); B64C 2027/8254 (2013.01); B64C 2220/00 (2013.01);
Abstract
An anti-torque system for a rotorcraft includes a first tail fan assembly including a plurality of first fan blades and a second tail fan assembly including a plurality of second fan blades. The first tail fan assembly has a larger diameter than the second tail fan assembly. The first fan blades have a larger rotational inertia than the second fan blades such that the second fan blades experience a larger angular acceleration than the first fan blades in response to torque, thereby providing yaw control for the rotorcraft.