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- Does Krypton or Xenon produce more thrust in a Hall-effect thruster . . .
I am trying to figure out if Xenon or Krypton produces more thrust for a given weight flow rate of fuel when the engine operates at the same discharge voltages The information I find is mixed or I
- 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
- 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
- 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
- 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?
- 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
- How much krypton do Starlink satellites carry when they are . . . - spacex
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
- What are the tradeoffs in propellant choices for ion electric based . . .
Think F = ma, where F in this case is the force of the electric field acting on the ion If you change fuels (say from xenon to krypton, which is lighter), but don't change field strengths, then F stays the same, while m decreases, which means a (acceleration on the ion) must be bigger
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