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. 08, 2014
Filed:
Sep. 09, 2009
Mithra M. K. V. Sankrithi, Lake Forest Park, WA (US);
Gerhard E. Seidel, Renton, WA (US);
Alan K. Prichard, Lynnwood, WA (US);
Matthew Moore, Everett, WA (US);
Mithra M. K. V. Sankrithi, Lake Forest Park, WA (US);
Gerhard E. Seidel, Renton, WA (US);
Alan K. Prichard, Lynnwood, WA (US);
Matthew Moore, Everett, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
An ultra-efficient 'green' aircraft propulsor utilizing an augmentor fan is disclosed. A balanced design is provided combining a fuel efficient and low-noise high bypass ratio augmentor fan and a low-noise shrouded high bypass ratio turbofan. Three mass flow streams are utilized to reduce propulsor specific fuel consumption and increase performance relative to conventional turbofans. Methods are provided for optimization of fuel efficiency, power, and noise by varying mass flow ratios of the three mass flow streams. Methods are also provided for integration of external propellers into turbofan machinery.