US Patent Issued to Textron Innovations on March 31 for "Helicopter tail rotor drive system on demand speed control" (Canadian, American Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,867, issued on March 31, was assigned to Textron Innovations Inc. (Providence, R.I.).

"Helicopter tail rotor drive system on demand speed control" was invented by Yann Lavallee (Joliette, Canada) and Scott D. Poster (Arlington, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Tail rotor control system is described for helicopters. A pedal position sensor operable by a pilot yields greater tail rotor RPM relative to the main rotor RPM, giving the pilot increased control over the vehicle. This proves especially useful in certain situations, such as high altitude, where increasing tail rotor speed from main rotor speed can give a pilot increased m...