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:
May. 25, 2021
Filed:
Dec. 09, 2015
Applicant:
St Engineering Aerospace Ltd., Singapore, SG;
Inventor:
Keen Ian Chan, Singapore, SG;
Assignee:
ST ENGINEERING AEROSPACE LTD., Paya Lebar, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 27/473 (2006.01); B64C 27/10 (2006.01); B64C 27/467 (2006.01);
U.S. Cl.
CPC ...
B64C 27/473 (2013.01); B64C 27/10 (2013.01); B64C 27/467 (2013.01);
Abstract
A method and system for generating a set of values for respective ones of a set of parameters used in determining rotor blade profiles for a coaxial rotor system. The method includes establishing () a ratio of respective desired thrusts of an upper rotor () and a lower rotor () of the coaxial rotor system based on a desired performance of the coaxial rotor system, and determining () the set of values of the set of parameters from the desired thrusts ratio based on a torque balance condition between the upper rotor and the lower rotor of the coaxial rotor system.