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. 19, 2015
Filed:
Jul. 13, 2011
Applicants:
Max Abildgaard, Braunschweig, DE;
Laurent Binet, Grans, FR;
Inventors:
Max Abildgaard, Braunschweig, DE;
Laurent Binet, Grans, FR;
Assignees:
Deutsches Zentrum für Luft- und Raumfahrt e.V., Köln, DE;
Office national d'études et de recherche aérospatiales, Châtillon, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/00 (2006.01); B64C 27/00 (2006.01);
U.S. Cl.
CPC ...
G06F 17/00 (2013.01); B64C 27/006 (2013.01);
Abstract
A method for early detection of the vortex ring state in a helicopter includes steps of establishing flight control signals for flight control with regard to the vertical movement axis of the helicopter, detecting resultant movements in the vertical movement axis of the helicopter, and detecting an impending vortex ring state of the helicopter in accordance with a correlation between the flight control signals and the vertical movements in the vertical movement axis.