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#electricpropulsion

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Spaceflight 🚀<p><span class="h-card" translate="no"><a href="https://mastodon.social/@wikkit" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>wikkit</span></a></span> to catch up, see <a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a></p>
Hacker News<p>Electric Propulsion's Dirty Secret: Why Lithium Can't Fly (Or Float) Profitably</p><p><a href="https://kumarletter.com/posts/electric-propulsion-s-dirty-secret-why-lithium-can-t-fly-or-float-profitably" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">kumarletter.com/posts/electric</span><span class="invisible">-propulsion-s-dirty-secret-why-lithium-can-t-fly-or-float-profitably</span></a></p><p><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HackerNews</span></a> <a href="https://mastodon.social/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a> <a href="https://mastodon.social/tags/LithiumBattery" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LithiumBattery</span></a> <a href="https://mastodon.social/tags/CleanEnergy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CleanEnergy</span></a> <a href="https://mastodon.social/tags/FutureTech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FutureTech</span></a> <a href="https://mastodon.social/tags/Innovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Innovation</span></a></p>
Spaceflight 🚀<p><a href="https://spacey.space/tags/Argon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Argon</span></a> is many times cheaper than <a href="https://spacey.space/tags/xenon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>xenon</span></a> (the most common, and expensive, propellant used in <a href="https://spacey.space/tags/HallThrusters" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HallThrusters</span></a>) and <a href="https://spacey.space/tags/krypton" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>krypton</span></a> (the propellant <a href="https://spacey.space/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> used in <a href="https://spacey.space/tags/Starlink" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Starlink</span></a> V1 and V1.5 satellites) <a href="https://techcrunch.com/2023/03/03/spacexs-acquisition-of-swarm-is-paying-off-with-new-starlink-thrusters" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">techcrunch.com/2023/03/03/spac</span><span class="invisible">exs-acquisition-of-swarm-is-paying-off-with-new-starlink-thrusters</span></a></p><p><a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a> <a href="https://spacey.space/tags/innovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>innovation</span></a></p>
Spaceflight 🚀<p>In 📆 2023, <a href="https://spacey.space/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> launched the first of its <a href="https://spacey.space/tags/Starlink" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Starlink</span></a> V2 Mini satellites 🛰️. These next-generation spacecraft are equipped with <a href="https://spacey.space/tags/HallEffect" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HallEffect</span></a> thrusters, or <a href="https://spacey.space/tags/HETs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HETs</span></a>, that operate on <a href="https://spacey.space/tags/argon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>argon</span></a>, instead of the <a href="https://spacey.space/tags/krypton" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>krypton</span></a> propellant on previous Starlinks <a href="https://aerospaceamerica.aiaa.org/year-in-review/a-year-of-firsts-for-electric-propulsion" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">aerospaceamerica.aiaa.org/year</span><span class="invisible">-in-review/a-year-of-firsts-for-electric-propulsion</span></a></p><p>The essential working principle of the <a href="https://spacey.space/tags/HallThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HallThruster</span></a> is that it uses an <a href="https://spacey.space/tags/electrostatic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electrostatic</span></a> potential to accelerate <a href="https://spacey.space/tags/ions" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ions</span></a> up to high speeds <a href="https://en.wikipedia.org/wiki/Hall-effect_thruster#Principle_of_operation" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.wikipedia.org/wiki/Hall-eff</span><span class="invisible">ect_thruster#Principle_of_operation</span></a></p><p><a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a></p>
Spaceflight 🚀<p><span class="h-card" translate="no"><a href="https://mastodon.social/@ScottManleyHimself" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>ScottManleyHimself</span></a></span> : Why <a href="https://spacey.space/tags/nuclear" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nuclear</span></a> ☢️ rockets can beat <a href="https://spacey.space/tags/chemical" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>chemical</span></a> rockets and <a href="https://spacey.space/tags/IonEngines" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IonEngines</span></a> <a href="https://www.youtube.com/watch?v=KlKAMB71wT4" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=KlKAMB71wT</span><span class="invisible">4</span></a></p><p><a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a> <a href="https://spacey.space/tags/SpacecraftPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpacecraftPropulsion</span></a></p>
Spaceflight 🚀<p>Electric propulsion systems are not <a href="https://spacey.space/tags/energy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>energy</span></a> limited. An arbitrarily large amount of energy can be delivered (from a <a href="https://spacey.space/tags/solar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>solar</span></a> ☀️ or <a href="https://spacey.space/tags/nuclear" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nuclear</span></a> ☢️ power system) to a given mass of propellant so that the exhaust velocity (or specific impulse) can be much larger than that available from a <a href="https://spacey.space/tags/chemical" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>chemical</span></a> propulsion system. Electric propulsion systems are termed "<a href="https://spacey.space/tags/power" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>power</span></a> 🔋 limited" <a href="https://sci.esa.int/web/smart-1/-/34201-electric-spacecraft-propulsion?section=electric-versus-chemical-propulsion" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">sci.esa.int/web/smart-1/-/3420</span><span class="invisible">1-electric-spacecraft-propulsion?section=electric-versus-chemical-propulsion</span></a></p><p><a href="https://spacey.space/tags/ESA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ESA</span></a> <a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a></p>
Spaceflight 🚀<p>In an <a href="https://spacey.space/tags/electrospray" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electrospray</span></a> thruster, charged particles are pulled directly out of a liquid propellant using a strong electric field and accelerated using charged <a href="https://spacey.space/tags/electrodes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electrodes</span></a> <a href="https://spacepropulsion.mit.edu/electric-propulsion" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">spacepropulsion.mit.edu/electr</span><span class="invisible">ic-propulsion</span></a></p><p><a href="https://spacey.space/tags/SpacecraftPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpacecraftPropulsion</span></a> <a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a></p>
Spaceflight 🚀<p>Liquid and solid propellant 🔥 <a href="https://spacey.space/tags/rocket" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rocket</span></a> engines feature low mass efficiency due to the thermodynamic limitations and extremely low efficiency at small thrust. The electric 🔋 thrusters do not pose limits on the propellant exhaust velocity and the propellant mass consumption may be very low <a href="https://www.nature.com/articles/s41467-017-02269-7" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41467-017</span><span class="invisible">-02269-7</span></a></p><p><a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a> <a href="https://spacey.space/tags/PlasmaThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PlasmaThruster</span></a> <a href="https://spacey.space/tags/IonThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IonThruster</span></a> <a href="https://spacey.space/tags/HallThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HallThruster</span></a></p>
Spaceflight 🚀<p>Which kind of <a href="https://techhub.social/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a> ⚡ is used for <a href="https://techhub.social/tags/Starlink" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Starlink</span></a> V2 ?</p>
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