Method for controlling a rotor-craft flight during trim
CA 2619595 C · Owner: Koelzer, Helmuth · Inventors: Schillings, John; Fortenbaugh, Robert; Agnihotri, Ashok
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for controlling a rotor-craft flight during trim without direct measuring , rotor flapping is provided. The method includes: a) providing a predetermined target , flapping trim state, b) determining a collective control stick position c) , determining air speed , of the rotor-craft using a), b), and c) to determine a desired longitudinal cyclic stick position , for trimmed flight and e) moving a control surface of the rotor-craft to change a rotor-craft , pitching moment until an error between an actual longitudinal cyclic stick position and the , desired longitudinal cyclic stick position of a cyclic control stick is substantially zero. The , method allows the rotor-craft to …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 30, 2006 and granted February 3, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.