ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,217, issued on July 1.

"Ramjet propulsion method" was invented by Mark Bovankovich (Orlando, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of propulsion includes providing a high-speed-launch ramjet boost (HSLRB) stage and HSLRB engine attached to a launch aircraft providing a speed less than=1.5 Mach. The HSLRB engine includes a combustion system and inlet(s) for air flow to the fuel injectors. A variable geometry (VG) nozzle having a nozzle actuator exhausts gas from combustion. A processor receives sensing signals from sensor(s) during flight that provides control signals to the nozzle actuator for dynamically controlling an apertur...