ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,567, issued on Nov. 11, was assigned to KOREA AEROSPACE RESEARCH INSTITUTE (Daejeon, South Korea).
"Power unit" was invented by Keun Bae Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power unit includes an engine including a driving shaft, a power generator provided on the driving shaft and configured to supply electric energy to a flight vehicle, and a thrust generator provided on an outer side of the power generator and configured to provide a propulsion force to the flight vehicle. When a temperature of the power generator is greater than or equal to a first temperature, the power generator and the thrust generator ar...