TIANJIN, China — Avicopter is developing a technology demonstrator for a high-speed helicopter, adopting a compound configuration that combines coaxial rigid rotors and nose-mounted counter-rotating ...
Mars is a lousy place to try to fly a helicopter. There’s the temperature, for one thing—a paralyzing -90º C (-130º F), frigid enough to cause nearly any machinery to freeze up and lock. There’s the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback