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. 10, 2012
Filed:
Apr. 27, 2007
Toyotaka Sonoda, Saitama, JP;
Markus Olhofer, Offenbach, DE;
Martina Hasenjaeger, Offenbach, DE;
Heinz-adolf Schreiber, Bonn, DE;
Toyotaka Sonoda, Saitama, JP;
Markus Olhofer, Offenbach, DE;
Martina Hasenjaeger, Offenbach, DE;
Heinz-Adolf Schreiber, Bonn, DE;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
In a transonic region with a Reynolds number not more than a critical Reynolds number, a flow velocity distribution on an extrados of an airfoil has a single supersonic maximum value within a range of up to 6% from a leading edge on a chord, or a shape factor has a maximum value in a region of 6 to 15% from the leading edge on the chord, the value being nearly constant in a region of 30 to 60% and gradually can increase up to 2.5 in a region downstream of 60% of chord. A pressure loss in a low Reynolds number region can be drastically reduced, while conventionally keeping low the pressure loss in a high Reynolds number region. Moreover, this pressure-loss reduction effect in the low Reynolds number region is exerted even if an inflow angle is changed in a wide range.