US Patent Issued to Pratt & Whitney Canada on Aug. 25 for "Rotorcraft with powerplant exhaust sound attenuation" (Canadian Inventor)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,576, issued on Aug. 25, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Rotorcraft with powerplant exhaust sound attenuation" was invented by Nathan Tomes (Hamilton, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly is provided for a rotorcraft. This rotorcraft assembly includes a fuselage, a tail and a rotorcraft lift system. The tail boom is connected to and projects longitudinally out from the fuselage. The rotorcraft lift system includes a rotorcraft rotor and a powerplant configured to drive rotation of the rotorcraft rotor to generate rotorcraft lift. The powerplant includes a heat engine and a powerplant flo...