Jinak kdyz uz sem si to behem chvilky vygooglil tak takhle (3 a S):

XCHAOS: vsadím se, že v návodu je ta páčka dobře popsaná :)

TOXICMAN: z nasaspaceflight fora

Argon is a pretty big deal for scalability. Xenon costs around $3000/kg & has limited world supply. Starlink would’ve used all of it & more. Plus, $3000/kg is more than F9’s launch costs and more than Starlink average manufacturing cost. So SpaceX went to Krypton, which is 10 times as plentiful and costs a tenth as much. But $300/kg is still much more than Starship’s long term launch costs, so it makes sense they’re moving to Argon, which is cheaper than $1/kg and much lower than Starship’s launch costs. It also is a plentiful byproduct of producing liquefied oxygen and nitrogen. For every 4000 tons of nitrogen, about 200 tons of Argon can be produced (argon is about 1% of Earth’s atmosphere), so SpaceX can get their own Argon from their own liquefaction process (or easily from Air Liquide or Linde or whatever, instead of as a specialized gas).

It can also be easily produced on Mars, where it’s about 2% of the atmosphere (plus 3% nitrogen, a bit of water vapor, and the rest CO2), so in principle it’s something a Mars city could launch to Earth for revenue.

If SEP propellant is 20% of Starlink’s launch mass, and Starlink is 40,000 satellites 2 tons each replenished every 5 years, that’s 3200 tons of SEP propellant per year. Not sure there’s that much Krypton in the world, and there’s certainly not that much Xenon.

TOXICMAN: tohle je ale bomba

Among other enhancements, V2 minis are equipped with new argon Hall thrusters for on orbit maneuvering
Developed by SpaceX engineers, they have 2.4x the thrust and 1.5x the specific impulse of our first gen thrusters.
This will also be the first time ever that argon Hall thrusters are operated in space

Argon Hall thruster tech specs:
- 170 mN thrust
- 2500 s specific impulse
- 50% total efficiency
- 4.2 kW power
- 2.1 kg mass
- Center mounted cathode

CRAZY_IVAN: a najdou ho pasažéři včas? (se ptám, zrovna Teslu po ruce nemám)

ale neni fool proof, protože o něm musíš vědět

XCHAOS: no a k těm klikám dveří u Tesly - jak tu byla zmínka o uhořelých co se nemohli dostat ven - tam by měli také mít něco 100% fool-proof a fail-safe na otevření dveří zevnitř (i kdyby to byla jen nějaká "sprostá mechanika" ;-)) a nemusí to být zrovna katapultovací sedadlo ze stíhačky, že? ;-)))

XCHAOS: pevné linky se sluchátky ještě také existují...

@SpaceX
We call them “V2 Mini”. They represent a step forward in Starlink capability
V2 minis include key technologies—such as more powerful phased array antennas and the use of E-band for backhaul—which will allow Starlink to provide ~4x more capacity per satellite than earlier iterations
This means Starlink can provide more bandwidth with increased reliability and connect millions of more people around the world with high-speed internet → http://starlink.com/resources