Orlando Sentinel

THE PLUSES OF COUNTER-ROTATION OUTBOARDS

QUESTION: I’m going to buy a new twin-engine boat. What can you tell me about counter-rotation outboards? ANSWER: Counter-rotation outboards turn their propellers in opposite directions. The starboard ...
Nature

Counter-Rotating Wind Turbines and Speed Increasers

Counter-rotating wind turbines (CRWTs) represent an innovative paradigm in wind energy conversion, employing a dual rotor mechanism in which two coaxial rotors spin in opposite directions. This ...
GIGAZINE

Helicopter "S-97 RAIDER" capable of high-speed flight with thrust of a counter-rotating rotor and propeller

It is an American helicopter manufacturing company and also manufactures military aircraftSikorsky · AircraftOf the new type helicopter "S-97 RAIDER" which the company has been developingConcept ...
The National Interest

A New “Stealth Helicopter” is On Its Way to the U.S. Army

Here’s What You Need To Remember: The new aircraft will employ several measures designed to make it quieter, including, most notably, a counter-rotating rotor that muffles the sound of the first. The ...
Drinks

Midea Group gets grant for high speed blender with counter-rotating motor

Midea Group has patented a counter-rotating motor for high-speed blenders. The motor includes a stator with outer and inner windings, an inverter for synchronous excitation, an inner rotor rotating in ...
Aviation Week

Safran Says Counter-Rotating Open Rotor Engine Relevant

Late last year, Safran completed a ground-test campaign with a full-scale counter-rotating open rotor (CROR) engine on an impressive outdoor testbed, almost 10 years after the launch of the ...