Method And System For Estimating The Flaps Position Of An Aircraft
AssigneeAirbus Operations GmbH
InventorsDavid Andissac, Maxime Semat
Life of this patent
Estimating the term…
Abstract
An estimation system includes a module for measuring a current angle of attack and current flight parameters of the aircraft, a module for estimating a current lift coefficient of the aircraft from the current flight parameters and from a mass of the aircraft, a module for estimating an angle of attack for a zero lift from the current angle of attack, from the current lift coefficient and from a slope of an affine part of at least one theoretical curve describing a lift coefficient of the aircraft as a function of an angle of attack, a module for estimating the current position of the flaps of the aircraft from the angle of attack for a zero lift and a module for sending the current position of the flaps to a user device.
Claims11
A method for estimating the position of flaps of an aircraft, comprising:
- a measurement step, implemented by a measuring module, including measuring a current angle of attack of the aircraft and current flight parameters of the aircraft;
- a first estimation step, implemented by a first estimating module, including estimating a current lift coefficient of the aircraft from the current flight parameters and from a mass of the aircraft;
- a second estimation step, implemented by a second estimating module, including estimating an angle of attack (α0) for a zero lift from the current angle of attack, from the current lift coefficient estimated in the first estimation step and from a slope (Czα) of an affine part of at least one theoretical curve describing a lift coefficient of the aircraft as a function of an angle of attack;
- a third estimation step, implemented by a third estimating module, including estimating the current position of the flaps of the aircraft from the angle of attack for a zero lift, estimated in the second estimation step;
- and
- a sending step, implemented by a sending module, including sending the current position of the flaps to a user device.
A system for estimating the flaps position of an aircraft, comprising:
- a measuring module configured to measure a current angle of attack of the aircraft and current flight parameters of the aircraft;
- a first estimating module configured to estimate a current lift coefficient of the aircraft from the current flight parameters and from a mass of the aircraft;
- a second estimating module configured to estimate an angle of attack for a zero lift from the current angle of attack, from the current lift coefficient estimated by the first estimating module and from a slope of an affine part of at least one theoretical curve describing a lift coefficient of the aircraft as a function of an angle of attack;
- a third estimating module configured to estimate the current position of the flaps of the aircraft from the angle of attack for a zero lift estimated by the second estimating module;
- and
- a sending module configured to send the current position of the flaps to a user device.
Dependencies are inferred from the claim text.