Rotor control with negative collective in high speed auto-rotation
CA 2348856 A1 · Owner: Carter, Jay W. Jr. · Inventors: Carter, Jay W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of operating a rotor aircraft at high speeds applies negative collective pitch, to the rotor. The rotor aircraft has a wing a thrust source and a rotor. , During horizontal flight, the pilot operates the thrust source to move the aircraft forward. This supplies lift due, to air flowing over the wing. By controlling tilt of the rotor and without , supplying power, to the rotor the pilot causes the rotor to auto-rotate due to the forward movement of the, aircraft. The speed of rotation of the rotor is controlled by the degree of tilt of the rotor, relative to the direction of flight. Once the aircraft speed is sufficiently high to cause reverse, flow of air over the entire …
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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 May 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2023.
- 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.