De-icing of an aircraft part
AssigneeSafran Nacelles
InventorsAlain Nourrisson, Hakim Maalioune
Life of this patent
Estimating the term…
Abstract
A de-icing system which includes actuators attached to the part; and a device for controlling the actuators in order to vibrate the part. The control device is designed for the following, the actuators being divided into a plurality of groups: to control the actuators of a first one of the groups in order to establish a resonant frequency of the part; then to control the actuators of a second one of the groups in order to establish a resonant frequency of the part and, in parallel, to control the actuators of the first group in order to de-ice the part by vibrating it, using the resonant frequency established with this first group.
Claims10
A de-icing system for de-icing a part of an aircraft, comprising:
- actuators divided into at least two groups and attached to the part;
- and
- a control device comprising first and second calculators;
- wherein the first calculator successively controls the actuators of each of the groups to determine a resonant frequency of the part for each said group;
- and
- the second calculator successively controls the actuators of each of the groups to de-ice the part by vibrating the part, using the resonant frequency of the part for said group determined by the first calculator, wherein the controlling by the second calculator at least partially overlaps the controlling by the first calculator;
- and
- wherein the first calculator in response to a failure of the second calculator, to successively control the actuators of each of the groups to de-ice the part by vibrating the part, using the resonant frequency of the part for said group determined by the first calculator, the first calculator successively controls the actuators of each of the groups to de-ice the part by vibrating the part, using the resonant frequency of the part for said group determined by the first calculator.
A method for de-icing a part of an aircraft using at least two groups of actuators attached to the part, comprising:
- successively controlling the actuators of each of the groups to determine a resonant frequency of the part for said group with a first calculator;
- successively controlling with a second calculator the actuators of each of the groups to de-ice the part by vibrating the part using the resonant frequency of the part for said group determined by the first calculator, wherein the controlling by the second calculator at least partially overlaps the controlling by the first calculator;
- and
- in response to a failure of the second calculator to de-ice the part by vibrating the part using the resonant frequency of the part for said group determined by the first calculator;
- successively controlling with the first calculator the actuators of each of the groups to de-ice the part by vibrating the part using the resonant frequency of the part for said group determined by the first calculator.
Dependencies are inferred from the claim text.