contrarotating

contrarotating

Two or more propellers or gas turbine spools rotating in opposite directions on a common shaft axis and having a common drive.
References in periodicals archive ?
Although new straw walker Lexion combines are also on their way, Claas is starting the rollout of its new generation harvesters with the Hybrid models featuring drum threshing and initial separation followed by two contrarotating secondary separation rotors.
"One model even had two contrarotating propellers up front." However, even in such specialist events, quiet electric power has almost completely taken over from the internal combustion engine and although this competition saw biplanes and twin-motor models competing with the more conventional monoplanes, they were all battery-powered without exception.
This is in contrast with 3D chirality, where the sense of such rotation does not change upon reversal of the observation direction [16]; in this case, the eigenmodes are two corotating elliptical polarizations, instead of contrarotating circular polarizations, as in 3D chiral (bi-isotropic) materials [14, 19].
Tenders are invited for Contrarotating Axial Flow Ventilation Fan
Guillemette, "Performance of a contrarotating small wind energy converter," ISRN Mechanical Engineering, vol.
We used a Haake Rheomixer fitted out with a "Rheomix 600" internal mixer with two rotors running in a contrarotating way at 50 rpm.
He said of the show: ``I've seen the future and she's wearing contrarotating nipple tassels!
A simpler concept with the same advantages would be a Scotch yoke system with two contrarotating cranks.
This unit features the maker's contrarotating double screw technology, which allows fine-tuning of the intense mixing.
A tiny company with only a handful of workers, the firm reflected the interests and dedication of its founder, who wanted to break away from the design traditions of Igor Sikorsky by developing a compact helicopter using two coaxial contrarotating rotor blades.
Dornier showed the Geamos VTOL battlefield surveillance platform with contrarotating rotors, and the CL-289 reconnaissance drone, for which Standard Elektrik Lorenz exhibited a GPS receiver.