METHOD FOR MANAGING THE AIR DATA OF AN AIRCRAFT

• US 20150308832A1
• Filed: 11/29/2013
• Published: 10/29/2015
• Est. Priority Date: 12/05/2012
• Status: Abandoned Application

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: Coatantiec, Jacques
• Application Number:
  US14/647,429
• Publication Number:
  US 20150308832A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 21/165 combined with non-inertial navigation instruments
• CPC Class Codes: G01C 5/005 altimeters for aircraft G01C5/02, G01C5/06 take precedence
• CPC Class Codes: G01C 5/06 by using barometric means

Abstract

The invention relates to a method for managing altitude data of an aircraft in which a main baro-inertial computation loop is used that uses signals originating from an inertial unit and a standard altitude information item supplied by a main air data reference, and at least one standard altitude information item supplied by a secondary baro-inertial deviation loop respectively using signals from said inertial unit of the main loop and a to standard altitude information item originating from the second air data reference, and a baro-inertial altitude deviation, a vertical speed deviation and accelerometric bias deviation visible on the vertical between the main loop and at least one of said secondary baro-inertial loops are computed.

Claims

1. A method for managing altitude data of an aircraft in which a main baro-inertial computation loop is used that uses signals originating from an inertial unit and a standard altitude information item supplied by a main air data reference, and at least one secondary baro-inertial deviation loop respectively using signals from said inertial unit of the main loop and a standard altitude information item originating from a secondary air data reference, and a baro-inertial altitude deviation, a vertical speed deviation and an accelerometric bias deviation visible on the vertical between the main loop and at least one secondary baro-inertial loop is computed.

2. The method as claimed in claim 1, wherein at least two secondary baro-inertial deviation loops are used that respectively use the signals from said inertial unit of the main loop and a standard altitude information item originating from distinct secondary air data references, and said deviations are compared with respective thresholds to detect and possibly isolate an unflagged failed air data reference.