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:
Sep. 30, 2014
Filed:
Sep. 07, 2012
Stéphane Walter, Brax, FR;
Stéphane Walter, Brax, FR;
Airbus Operations SAS, Toulouse, FR;
Abstract
A method for estimating aircraft airspeed by a processor and an airspeed estimation device, which includes the calculation of a value for aircraft aerodynamic speed (Vcaero), by an aerodynamic calculator, based on aircraft aerodynamic parameters and the calculation of a value for current aircraft speed (Vc) by an anemobarometric unit. An estimated airspeed (Vcest) is determined by adding, by an adding unit, a corrective value, determined by an airspeed integrating unit, to the value for Vcaero. The corrective value is determined, by the airspeed integrating unit, according to a comparison between: a residual speed value (VR), determined by a residual speed determination unit, with the value VR determined by correcting the value for Vcaero to a value that converges toward the value for Vc, and a predetermined threshold value (λ).