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:
Jun. 27, 2017
Filed:
Dec. 04, 2013
Sikorsky Aircraft Corporation, Stratford, CT (US);
Blake Almy Moffitt, South Windsor, CT (US);
Thomas G. Tillman, West Hartford, CT (US);
Brian E. Wake, South Glastonbury, CT (US);
Byung-Young Min, Manchester, CT (US);
Claude G. Matalanis, Longmeadeow, MA (US);
SIKORSKY AIRCRAFT CORPORATION, Stratford, CT (US);
Abstract
A boundary layer ingesting (BLI) blade having a span is provided and includes a root section connectable to a hub, a tip section disposable at a distance from the hub and having a pitch and a body extending in a spanwise dimension from the root section to the tip section. The root section has a local pitch from the root section to about a 70% span location, which is less than the pitch at the tip section, to thereby reduce local angles of attack in a boundary layer region defined in and around the root section.