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:
Nov. 19, 2013
Filed:
Aug. 16, 2007
Miguel Gonzalez Cuadrado, Madrid, ES;
Miguel Gonzalez Cuadrado, Madrid, ES;
Indra Sistemas, S.A., Alcobendas, ES;
Abstract
This procedure proposes the appropriate equations that determine the rotor movement in order to obtain the aerodynamic actions for each blade in each iteration (the forces that are transmitted to the helicopter and the moments with respect to the articulations), and they are resolved by discretizations made in the rotor disc, such that that the blade elements of the partition are connected to the disc, which does not rotate, instead of to each blade. The blades pass through an azimuth range in each iteration, making a division of each blade longitudinally into nelements, and the rotor disc into nsectors, corresponding to divisions of the range of azimuth angles. Therefore, partitions are made on n·nblade elements, identifying each blade element by means of its distance to the rotor axis and its azimuth angle.