公开(公告)号：US20230091324A1

公开(公告)日：2023-03-23

申请号：US17795177

申请日：2021-01-29

Applicant: THALES

Inventor： Philippe GUICHARD ,  Jean-Pierre SCHLOTTERBECK ,  Frédéric SAHLIGER ,  Jean-Claude BOURLAND ,  Philippe RONDEAU

IPC: G01P21/00 ,  G01P13/02 ,  G01P5/16

Abstract: The present invention relates to a method for self-testing an angle-of-attack probe comprising the steps of controlling an angular excitation of a rotary element that is rotatable about its equilibrium position according to known excitation characteristics; acquiring angular measurements relating to the rotation of the rotary element, determining a parasitic torque applied to the rotary element on the basis of the angular measurements and of the excitation characteristics; comparing at least one component of the parasitic torque with at least one predetermined threshold and detecting an operating fault in the probe when said component exceeds the predetermined threshold.

公开(公告)号：US20250004009A1

公开(公告)日：2025-01-02

申请号：US18665254

申请日：2024-05-15

Applicant: THALES

Inventor： Philippe GUICHARD ,  Jean-Pierre SCHLOTTERBECK ,  Frédéric SAHLIGER ,  Jean-Claude BOURLAND ,  Philippe RONDEAU

IPC: G01P21/00 ,  G01P5/16 ,  G01P13/02

Abstract: The present invention relates to a method for self-testing an angle-of-attack probe comprising the steps of controlling an angular excitation of a rotary element that is rotatable about its equilibrium position according to known excitation characteristics; acquiring angular measurements relating to the rotation of the rotary element, determining a parasitic torque applied to the rotary element on the basis of the angular measurements and of the excitation characteristics; comparing at least one component of the parasitic torque with at least one predetermined threshold and detecting an operating fault in the probe when said component exceeds the predetermined threshold.

公开(公告)号：US20230258452A1

公开(公告)日：2023-08-17

申请号：US18108333

申请日：2023-02-10

Applicant: THALES

Inventor： Frédéric SAHLIGER ,  Jean-Claude BOURLAND

IPC: G01C21/16 ,  G01C23/00 ,  G01C21/08

CPC classification number: G01C21/188 ,  G01C23/005 ,  G01C21/08

Abstract: The present method includes a first step of obtaining first values of compensation coefficients for magnetic anomalies of the magnetometer, and a second step of in-flight refining including: a) an acquisition of a plurality of magnetic field vector values and associated aircraft attitude angle values; b) a calculation of a magnetic heading as a function of the first values of the compensation coefficients and values of magnetic field vector; c) a recursive calculation of a slope coefficient, as a function of a difference in heading between the calculated magnetic heading and a reference magnetic heading, and of values for aircraft attitude angles; and d) a calculation of a value of compensation coefficient for vertical magnetic anomalies using a vertical bias estimator as a function of the slope coefficient, aircraft attitude angle values, and local terrestrial magnetic field values.