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:
Oct. 22, 2013
Filed:
May. 02, 2011
Francois-xavier Filias, Pelissanne, FR;
Francois-Xavier Filias, Pelissanne, FR;
Eurocopter, Marignane Cedex, FR;
Abstract
A method of controlling a buoyancy system for an aircraft includes: determining the roll angle φ and the pitching angle θ of the aircraft; verifying whether −φ<+and whether −θ<θ<+θ, where φand θare predefined limit angles; if at least one of the angles φ and θ is no longer in its above-defined respective range, activating an automatic trigger of the buoyancy system; if the angles φ and θ are in their above-defined respective ranges, determining the altitude A of the aircraft; inhibiting the automatic trigger if A >A, where Ais a predefined limit altitude; and if A≧A, and if at least partial immersion of the aircraft has been detected, activating the automatic trigger.