The fundamental design principles behind rotary-wing aircraft date back to the Renaissance, with some of the earliest-known designs belonging to Leonardo da Vinci. Naturally, technology has ...
Rotor Technologies is now in production on a full-size unmanned helicopter for civilian use. Based on the Robinson R44 Raven II, the R550X flies for more than three hours, at speeds up to 150 mph (241 ...
Helicopters are marvelous pieces of engineering, providing a live demonstration of the laws of physics as they carry us into the skies. With metal or composite blades angled just right and spinning at ...
Rotor Technologies, Inc., a developer of autonomous VTOL aircraft, unveiled its R550X, an uncrewed helicopter based on the Robinson R44 Raven II. The Nashua, New Hampshire, company also said it has ...
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