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:
Sep. 02, 2014
Filed:
Dec. 21, 2009
Applicants:
Matthew D. Moore, Everett, WA (US);
Kelly L. Boren, Marysville, WA (US);
Robin B. Langtry, Burien, WA (US);
Inventors:
Matthew D. Moore, Everett, WA (US);
Kelly L. Boren, Marysville, WA (US);
Robin B. Langtry, Burien, WA (US);
Assignee:
The Boeing Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/04 (2006.01); B64C 11/48 (2006.01); B64C 11/00 (2006.01); B64D 27/02 (2006.01);
U.S. Cl.
CPC ...
B64C 11/003 (2013.01); B64D 2027/026 (2013.01); B64C 11/48 (2013.01);
Abstract
A method and apparatus for controlling a propeller of a contra-rotation open fan (CROF) engine of an aircraft. A diameter of the propeller is set to be at a first diameter during at least a portion of a first flight condition of the aircraft. The diameter of the propeller is set to be at a second diameter, different from the first diameter, during at least a portion of a second flight condition of the aircraft.