impactor

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impactor

[im′pak·tər]
(engineering)
A general term for instruments which sample atmospheric suspensoids by impaction; such instruments consist of a housing which constrains the air flow past a sensitized sampling plate. Also known as impactometer.
(mechanical engineering)
A machine or part whose operating principle is striking blows.
(mining engineering)
A rotary hammermill which crushes ore by impacting it against crushing plates or elements.
References in periodicals archive ?
It took time to build the impactors and wait for the right launch window.
Multirok vertical shaft impactors, manufactured by thyssenkrupp can be used flexibly in stationary, semi-mobile and mobile plants, thyssenkrupp also carries out intensive research and development work to continuously optimize the proven concept.
NASA has previously (https://www.nasa.gov/content/asteroid-grand-challenge/mitigate/kinetic-impactor) pointed out the issue with using a kinetic impactor: Even if one or more were available immediately upon incoming asteroid detection, they would still need "at least one to two years for smaller asteroids" in lead time, and way more than that if a kinetic impactor needed to be designed and built from scratch or if the asteroid was larger.
Some of the most commonly used impactors are the Flex-PLI, PDI-1 and PDI-2.
The same rigid and deformable impactors used in the second group of benchmark tests were used in the third group of benchmark tests.
With cascade impactor we explain about deposition site and rate from particle size spectrums.
A kinetic impactor deflection involves hitting "an asteroid with a one-ton spacecraft going as fast as possible--perhaps 20,000 miles per hour," Reitsema said.
Boukhili, "The contact behavior between laminated composites and rigid impactors," Composite Structures, vol.
It blends a kinetic impactor with a subsurface nuclear explosion strong enough to break apart the asteroid.
Inertial impactors are well-understood aerosol classifiers that can be designed precisely to provide particle penetration of specific particle sizes with known aerodynamic diameter.
Most impactors were around 10 centimeters in diameter and traveled at speeds of up to 72 kilometers per second, Bouley says.
The dual-strike impactors hit on the upstroke and the downstroke, improving peak probability stress distribution.