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:
Apr. 07, 2009
Filed:
Mar. 08, 2006
Robert C. Moffitt, Seymour, CT (US);
Thomas Alan Egolf, Glastonbury, CT (US);
Robert D. Beatty, Trumbull, CT (US);
John K. Karpowich, Trumbull, CT (US);
Ashish Bagai, Hamden, CT (US);
Robert C. Moffitt, Seymour, CT (US);
Thomas Alan Egolf, Glastonbury, CT (US);
Robert D. Beatty, Trumbull, CT (US);
John K. Karpowich, Trumbull, CT (US);
Ashish Bagai, Hamden, CT (US);
Sikorsky Aircraft Corporation, Stratford, CT (US);
Abstract
A main rotor blade incorporating a rotor blade tip region having a tip chord and a tip taper such that the ratio of the main rotor blade chord to the tip chord is approximately 0.30. The tip taper ratio preferably providing an approximately 28% area of reduction in said outer 10% of said blade span. The tip region preferably further including a hover optimized high lift airfoil and a tip sweep that reaches a constant value of approximately 30 degrees along the quarter chord line.