摘要: Electrical charge gathered from space plasma can cause malfunctions or failure, but techniques for minimizing its effects are available. This article concentrates on the effects of spacecraft charging on unmanned operations.关键词: artificial satellites static electrification malfunctions space plasma...
A layer of blistering plasma, it represents the uppermost portion of the sun's atmosphere. The corona begins roughly 1,300 miles (2,100 kilometers) above the surface and extends far into space. Parts of it get hot. Very hot. In some places, the corona is liable to be 300 times ...
One theory is that this happens when meteorites plow into the rings and whip up a cloud of charged plasma (等离子区), which then charges up the rings’ dust particles. But this, says Jones, can’t explain why the spokes build up gradually--it’s implausible (难信的) that several meteo...
can be considered as conductors immersed in the moving solar wind plasma with velocityV0carrying the frozen-in IMFB0. In the frame of reference of the conductor, the electromagnetic field comprises two components:B0and the convective electric fieldE = −V0 × B0. The convective fie...
by Raphael Rosen,Princeton Plasma Physics Laboratory PPPL physicists Robert Lunsford, left, and Rajesh Maingi, right Credit: Elle Starkman Beryllium, a hard, silvery metal long used in X-ray machines and spacecraft, is finding a new role in the quest to bring the power that drives the sun ...
However, if the two spacecraft carry a large electric charge, then charge drag against the dusty plasma in this region could be significant. In the present Letter, estimates of this force are made, and conditions are found under which the observed level of drag is obtained. A density of ...
around me. And because I could no longer identify the boundaries of my body, I felt enormous and expansive. I felt at one with all the energy that was, and it was beautiful1. Recounting the sensations that arose after seeing the Earth from space, astronaut Edgar Mitchell said:And suddenly...
Scaled-down plasma thrusters, like those deployed on larger-class satellites, do not work well. A more promising method of micropropulsion is electrospray. Electrospray involves microscopic, hollow needles that use electricity to spray thin jets of fluid, pushing the spacecraft in the opposite direct...
around me. And because I could no longer identify the boundaries of my body, I felt enormous and expansive. I felt at one with all the energy that was, and it was beautiful1. Recounting the sensations that arose after seeing the Earth from space, astronaut Edgar Mitchell said:And suddenly...
Micro Power Electronics Intelligent Battery Charging Technology John James, President and CEO, GEM Power, LLC Fuel Cell Integration Into a Battery Electric Utility Vehicle Mark Anderson, Senior R&D Engineer, Toro Evaluation of Atmospheric Plasma Surface Modification for Continuous Processing of Flexible Bat...