This helicopter has dual-crossing rotors for ... rotors eliminating the need for a tail rotor. These opposite-spinning rotors lend the K-MAX a natural tendency to hover, making it more stable.

Watch Why the CH-47 Chinook Is the King of Heavy-Lift Helicopters on Interesting Engineering. Explore the latest in ...

Sikorsky, a Lockheed Martin company has successfully validated the advanced control laws to successfully fly a ‘rotor blown ...

The Robinson crashed into a stationary helicopter, causing the propellers to collide with the other aircraft before ...

Where a helicopter uses engine power to spin a rotor blade to force air down and create lift, on a Rotodyne the large rotor wasn’t directly driven by a motor. Instead it used a freely-spinning ...

Aerospace giant Sikorsky announced it has conducted a series of flight tests for the rotor blown wing drone being developed ...

as seen in helicopters and multirotors. A much less popular solution is the cyclocopter, which consists of a pair of rotors spinning around a horizontal shaft with horizontal blades. [Nicholas ...

But thanks to a doctoral thesis he found, it’s also possible to control a traditional single-rotor helicopter by substituting ... single revolution when it’s spinning at 3,000 RPM is no ...

JOINT BASE LANGLEY-EUSTIS, Virginia — The air around the soldiers is filled with the whirring noise of the helicopter rotors spinning as the blades cut through the air, keeping the helicopter aloft.

The Chinook features two T55s, one mounted on each side of the helicopters’ rear pylon and connected to the rotors by drive shafts. The Chinook’s two rotors each feature three-blades and ...

The two Rolls-Royce Liberty AE1107C engines each produce more than 6,200 shaft horsepower and spin ... so the rotors generate thrust downward, letting the aircraft perform like a helicopter.