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:
Dec. 12, 2017
Filed:
Oct. 29, 2014
Applicant:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Inventors:
Ryan T. Ehinger, Southlake, TX (US);
David R. Bockmiller, Fort Worth, TX (US);
Assignee:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 3/02 (2006.01); B64C 27/32 (2006.01); G01L 3/10 (2006.01); B64F 5/60 (2017.01);
U.S. Cl.
CPC ...
G01L 3/02 (2013.01); B64C 27/32 (2013.01); B64F 5/60 (2017.01); G01L 3/101 (2013.01);
Abstract
A method for calculating torque through a rotor mast of a propulsion system of a tiltrotor aircraft includes receiving the torque being applied through a quill shaft of the rotorcraft. The quill shaft is located between a fixed gearbox and a spindle gearbox, and the spindle gearbox is rotatable about a conversion access. The torque through the rotor mast is determined by using the torque through the quill shaft and the efficiency loss value between the quill shaft and the rotor mast.