Ed spun his chair around by counter-rotating the wheels.    From Wordnik.com.  [A Corpse is a Corpse]

Push it forward and the two counter-rotating blades pivot forward.    From Wordnik.com.  [I'm Tired of Flying Cars] Reference

I never knew you could have counter-rotating gas, stars, dust, etc when two galaxies merge.    From Wordnik.com.  [Flying saucer galaxy!] Reference

A star in our galaxy has been discovered to have its inner and outer gas disks counter-rotating.    From Wordnik.com.  [Counter-rotation In Young Star-system | Blog | Futurismic] Reference

Clearly the helmets have counter-rotating propellers, only they whiz so fast you can't see them as a pair.    From Wordnik.com.  [Lion Annual (1958)] Reference

MacArthur glanced skyward to see the drone plummeting from the sky, its counter-rotating blades whirling silently.    From Wordnik.com.  [Genellan- Planetfall]

A single Rolls-Royce 250-C30 turbine helicopter engine powers the counter-rotating, three-bladed fans in front and back.    From Wordnik.com.  [First it Was Flying Cars..Now Its Flying Ambulances | Impact Lab] Reference

The engine also sports two balancer shafts, counter-rotating at twice the speed of the crankshaft, to reduce vibrations.    From Wordnik.com.  [Volkswagen’s New W-8 Engine | Impact Lab] Reference

The well-tempered clay, or clay with additives, is shovelled continuously into the opening above the counter-rotating augers.    From Wordnik.com.  [Chapter 14] Reference

Other instances discussed in the book include the hexagonal patterns of Bénard convection and counter-rotating Taylor vortices.    From Wordnik.com.  [Nancy Pearcey: The Creationists' Miss Information - The Panda's Thumb] Reference

But it will also be capable of handling counter-rotating propellers at the rear, should the industry overcome the challenges associated with that technology.    From Wordnik.com.  [Jet-Engine Makers Launch New War] Reference

The great counter-rotating wheels of the station churned around in the field of view like ancient water-wheels, endless grinding dust for masters long since forgotten.    From Wordnik.com.  [Battlestar Galactica] Reference

Shaft speed on axial GT to be halved by counter-rotating stator vanes?.    From Wordnik.com. Reference

Whitney F135 turbofan engine driving a counter-rotating Rolls-Royce LiftFan®.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

Comparison of experiments on plasma rotation in counter-rotating and divergent ….    From Wordnik.com.  [IEEE Spectrum] Reference

For this, two units above and below the plate drive counter-rotating abrasive belts.    From Wordnik.com.  [Manufacturingtalk - manufacturing industry news] Reference

The collider "circulates counter-rotating beams of protons at high energy," Errede said.    From Wordnik.com.  [The News-Gazette Local Stories] Reference

The LHC is designed to collide two counter-rotating beams of protons, according the official Web site.    From Wordnik.com.  [Top Stories - Google News] Reference

This "new" physics, the researchers contend, is tied up in counter-rotating eddies with extreme energy.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

Experimental studies on cylindrical plasma centrifuges of a counter-rotating type and a divergent type ….    From Wordnik.com.  [IEEE Spectrum] Reference

RockNet is a digital audio network that offers up to 160 channels over a single counter-rotating CAT-5 ring.    From Wordnik.com.  [UK Regional Film and Television News] Reference

Dual counter-rotating cylindrical brushes sweep and scrub in one pass, providing a cleaning path of up to 157cm.    From Wordnik.com.  [Manufacturingtalk - manufacturing industry news] Reference

It is powered by a single Pratt and Whitney F135 turbofan engine driving a counter-rotating Rolls-Royce LiftFan.    From Wordnik.com.  [Military Space News, Nuclear Weapons, Missile Defense] Reference

As well, the S. 55 had two inline counter-rotating propellers, achieved by mounting the twin engines back to back.    From Wordnik.com.  [WN.com - Business News] Reference

This is best shown in the third animation, where the octahedra pierced by the rotational axis are counter-rotating.    From Wordnik.com.  [iMechanica - Comments] Reference

Faster counter-rotating brushes with improved design pick up more hair and debris and are easier to remove and clean.    From Wordnik.com.  [Woot! - One Day, One Deal] Reference

The Blade mCX offers unsurpassed stability and incredible control through the coaxial, counter-rotating head design and.    From Wordnik.com.  [WN.com - Business News] Reference

Each fan has two independent counter-rotating blades and is individually monitored and controlled by over a dozen temperature sensors.    From Wordnik.com.  [Computerworld News]

A powerful vacuum: Two counter-rotating brushes and an efficient vacuum reach deep into your carpet to remove dirt, dust, and pet hair.    From Wordnik.com.  [Woot! - One Day, One Deal] Reference

The plane also features four brushless electric motors with counter-rotating propellers along with high energy density lithium batteries.    From Wordnik.com.  [Fast Company] Reference

For example, Embry-Riddle purchased 10 Diamond DA42 L360 twin-engine aircraft, equipped with two counter-rotating Lycoming IO-360 engines.    From Wordnik.com.  [Aero-News Network] Reference

"sleeve" controls a lower rotor while the inner shaft drives the upper, counter-rotating blades.    From Wordnik.com.  [All DN headlines] Reference

You can see the counter-rotating.    From Wordnik.com.  [CNN Transcript Jul 11, 2002] Reference

197-foot catamaran, with four diesel-electric counter-rotating propellers, rotational wingsails, and solar cell arrays.    From Wordnik.com.  [Gizmodo] Reference

@Editor - I know for a fact you will never find a counter-rotating DDC for your real world build.    From Wordnik.com.  [bit-tech.net Feed] Reference