Fuel control for controlling helicopter rotor/turbine acceleration
CA 1202098 A · Owner: Chandler Evans Inc · Inventors: Zagranski, Raymond D.; Howlett, James J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fuel Control For Controlling Helicopter Rotor/Turbine Acceleration, Abstract, The difference in the speed (54 56) of a helicopter gas, engine (20), free turbine (40) from a reference speed (62 64), generates (80) a desired acceleration signal (81). The difference (82) in actual turbine acceleration (84 86) from, desired acceleration is integrated (100) to provide an engine fuel command signal (67-73) whenever (88) the speed error signal exceeds (90) a predetermined threshold magnitude.
Read the whole patent
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
- Granted March 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 2003.
- 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.