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:
Oct. 01, 2002
Filed:
Mar. 13, 2001
John C. Larzelere, Fredericksburg, VA (US);
Dale W. Sisson, Jr., King George, VA (US);
Craig S. LaMoy, King George, VA (US);
Charles K. Atwell, King George, VA (US);
Thomas W. Van Doren, Fredericksburg, VA (US);
Marh A. Huebner, Fredericksburg, VA (US);
Nicholas L. Tzortzinis, Fredericksburg, VA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A one-piece fan rotor optimized for construction and safety performance criteria is provided. The rotor has a hub with a radial cross-section defined by an I-beam. A plurality of unequally-spaced rotor blades are disposed circumferentially around and extend radially outward from the hub. Each rotor blade has a root portion coupled to the hub with the root portion defined by a concave fillet circumventing the rotor blade. For rotational balance, at least one of the forward side and backside of the hub incorporates an axially extending pad. Methods are provided for controlling stress on the rotor and for balancing the rotor.