ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,401, issued on Feb. 10, was assigned to Archer Aviation Inc. (San Jose, Calif.).
"Systems and methods for propeller thrust protection" was invented by Giovanni Droandi (San Jose, Calif.) and Nathan Thomas Depenbusch (Mountain View, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates generally to flight control of electric aircraft and other powered aerial vehicles. In one embodiment, a method is disclosed, comprising: receiving a descent rate command from a pilot input device, determining a proximity of each propeller of at least two propellers to a vortex ring state; and controlling the aircraft's descent rate to be...