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Grounded dreams: Lockheed XH-51 – the rigid-rotor masterpiece of the 1960s

The Lockheed XH-51 was an experimental rigid-rotor helicopter developed in the 1960s to test high-speed rotary-wing flight ...
New Atlas

NASA pushes next-gen Mars helicopter rotors through the sound barrier

Engineers at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, have demonstrated that the blades of their ...
Interesting Engineering

World’s first piloted hydrogen-electric helicopter completes full circuit test flight

Unither Bioélectronique (UB) successfully completed the world’s first piloted hydrogen-electric helicopter circuit flight at ...
New Atlas

First hydrogen helicopter just proved it can fly a real mission

Last month, a modified Robinson R44 lifted off from Roland-Désourdy Airport in Bromont, Quebec, and completed what may be the ...
autoevolution

World’s First Piloted Hydrogen-Electric Helicopter Circuit Flight Completed in Canada

This full circuit flight demonstration (also the first of its kind in the world) took place on April 10, this year, at Roland-Désourdy Airport in Bromont, Quebec, and was officially recognized by ...

Engineers at NASA’s Jet Propulsion Lab make a breakthrough in rotor technology

A little more than three years since NASA’s Ingenuity helicopter ended its pioneering mission at Mars, engineers at the Jet ...
AOL

NASA’s first nuclear-powered spacecraft is heading to Mars, and its bringing helicopters

For years, nuclear propulsion sat in the same category as so many ambitious space ideas, impressive on paper, always a few steps away from reality. Now NASA says that changes in 2028. The agency plans ...