[Asia Economy Reporter Kim Bong-su] Domestic researchers have developed a technology for the first time in the world that uses magnets to rotate two propellers in opposite directions, minimizing noise ...

It’s a rare occasion when a piece of engineering transcends its pure industrial function and becomes art. And it’s even rarer when that metamorphosis is the byproduct of a quest for better performance ...

It is an American helicopter manufacturing company and also manufactures military aircraftSikorsky · AircraftOf the new type helicopter "S-97 RAIDER" which the company has been developingConcept ...