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.

Date of Patent:
Apr. 06, 2021

Filed:

Nov. 13, 2018
Applicant:

Textron Innovations Inc., Fort Worth, TX (US);

Inventors:

Stephen Yibum Chung, Euless, TX (US);

Eric Ricardo Gonzalez, Fort Worth, TX (US);

Russell C. Peters, Fort Worth, TX (US);

Matthew Edward Louis, Fort Worth, TX (US);

Assignee:

TEXTRON INNOVATIONS INC., Fort Worth, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 29/00 (2006.01); B64C 27/08 (2006.01); G05D 1/06 (2006.01); G05D 1/08 (2006.01);
U.S. Cl.
CPC ...
B64C 29/0033 (2013.01); B64C 27/08 (2013.01); G05D 1/0676 (2013.01); G05D 1/0858 (2013.01);
Abstract

A method for an aircraft may include determining a transition from an airplane mode to a helicopter mode for a propulsion system of the aircraft, wherein the propulsion system comprises a plurality of rotor blades; determining whether a descent rate condition is satisfied, wherein the descent rate condition is associated with a maximum allowable descent rate for the aircraft; and controlling a collective pitch angle for the plurality of rotor blades based on the descent rate condition.


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