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:
Mar. 26, 2002
Filed:
Jul. 28, 1999
Applicant:
Inventors:
Anne Marie Rodde, Verrieres le Buisson, FR;
Joël Reneaux, Orsay, FR;
Jean Jacques Thibert, Verrieres le Buisson, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 1/118 ; B64C 3/10 ;
U.S. Cl.
CPC ...
B64C 1/118 ; B64C 3/10 ;
Abstract
The invention concerns a blade profile for aircraft rotor, comprising, between a leading edge ( A) and a trailing edge ( B), a suction face ( ) and a blade face ( ) whereof the geometric locus of the equidistant points of the latter defines the curvature. The invention is characterised in that the value of the ratio of the maximum curvature to the maximum thickness develops linearly with the profile ( ) relative thickness and ranges between 0.13 and 0.19 for a relative thickness of 7% of the chord (C) and ranges between 0.18 and 0.24 for a relative thickness of 15% of the chord (C).