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- Does Krypton or Xenon produce more thrust in a Hall-effect thruster . . .
Krypton and xenon have roughly the same charge in plasma thrusters (a bit more than the elemental charge) but the mass of xenon is much higher Thus, for the same accelerating voltage V V, the exhaust velocity and Isp is higher for krypton
- spacex - Why will Starlink satellites use krypton instead of xenon for . . .
To adjust position on orbit, maintain intended altitude, and deorbit, Starlink satellites feature Hall thrusters powered by krypton (emphasis added) Most of the electric propulsion systems that I've heard of use xenon
- What performance specification would be lower for Krypton than for . . .
The Ars Technica article SpaceX scrubs first attempt to launch 60 Internet satellites [Updated] (found here) discusses the use of Krypton rather than Xenon in the Starlink Hall effect ion thruster
- What is the fate of Krypton exhaust from Starlink thrusters?
If the thrusters have a specific impulse of 1500s, that means the krypton atoms are traveling roughly 15 km s when they exit the nozzle, which exceeds the escape velocity of earth This may or may not be relevant, depending on how dense the atmosphere exosphere is where the thruster is fired, and also depending on which way the thruster is pointed (If the satellite's speed is being
- spacex - How much krypton do Starlink satellites carry when they are . . .
Starlink satellites use krypton as propellant This answer roughly estimates 2 3 kg of Krypton based on a total delta-V of 190 m s and an exhaust velocity of 20,000 m s But how close is that to re
- physics - Why might krypton have a lower utilization fraction than . . .
4 A comment below Why will Starlink satellites use krypton instead of xenon for electric propulsion? links to the 2011 preprint A Performance Comparison of Xenon and KryptonPropellant on an SPT-100 Hall Thruster; IEPC-2011-003 which explains that in this study using a SPT-100 Hall Thruster krypton had a lower utilization fraction than xenon
- How much krypton is stored on a Starlink satellite?
How much krypton (fuel) is there for the krypton-powered ion thrusters on Starlink satellites and how long does it last?
- How much does it cost to fill an ion thuster with Xenon for a . . .
The Starlink constellation v1 satellites used Krypton for its ion thrusters Starlink v2 satellites use Argon Alibaba shows Krypton at around ~$100 cubic meter, which is less than a tenth of the of the price volume wise And Argon costs far less than Krypton
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