[Curtis Youngblood], one of the top RC heli pilots in the world, came up with a very cool drive system for a quad, requiring only one motor and granting each blade collective pitch that allows for ...

Mars helicopter Ingenuity appears to be missing rotor blades in Perseverance rover imagery captured. The rover's SuperCam Remote imager was used to capture the pic. Credit: Space.com | NASA/JPL ...

It’s hard to resist the urge to look to the skies when a helicopter is flying past. That loud, distinctive thud from the rotor blades reflects the powerful lift needed to get a helicopter off the ...