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| Frank Karnauskas (N1UW) via ANS to All |
| [ANS] ANS-026 AMSAT News Service Weekly |
| 25 Jan 25 19:09:22 |
[continued from previous message]
* Electric propulsion is being increasingly used on space missions and
could ultimately replace thrusters using chemical rockets. Spacecraft powered
by electric propulsion could soon be better protected against their own
exhaust, thanks to new
supercomputer simulations. Electric propulsion is a more efficient alternative
to traditional chemical rockets, and there are even plans to use electric
propulsion on NASA's Lunar Gateway space station. The idea behind electric
propulsion is that an
electric current ionizes (i.e. removes an electron from) atoms of a neutral
gas, such as xenon or krypton, stored on board a spacecraft. The ionization
process produces a cloud of ions and electrons. Then a principle called the
Hall effect generates an
electric field that accelerates the ions and electrons and channels them into
a characteristically blue plume that emerges from the spacecraft at over
37,000 mph (60,000 kph). Hence an electric propulsion system is also referred
to as an ion engine. More
information at https://tinyurl.com/ANS-026-ION. [ANS thanks space.com for the
above information.]
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Contact info [at] amsat [dot] org for additional membership information.
73 and remember to help Keep Amateur Radio in Space!
This week's ANS Editor, Frank Karnauskas, N1UW
f.karnauskas [at] amsat [dot] org
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