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  ARM Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life (Terry Pratchett, Jingo)

SpaceX's Elon Musk high on success after counting '420' Starlinks in orbit and Frosty the Starship survives cryo test

(2020/04/28)


Roundup Hello, Starlink. SpaceX launched and landed another Falcon 9, Russia sent its next freighter to the ISS and SpaceX CEO Elon Musk celebrated failing to explode the latest Starship in the latest space-tastic news roundup.

First off, the fourth Starship full-scale prototype stayed standing following a cryogenic proof test on Sunday evening.

SN4 passed cryo proof! 😅 [1]pic.twitter.com/EJakThZRGF — Elon Musk (@elonmusk) [2]April 27, 2020

While the earlier failures had been down to duff welding, the last collapse was attributed to a test configuration mistake that led to the top tank collapsing the bottom tank of the booster. This time the filling went well and, aside from the expected venting, there was no repeat of the earlier incidents.

Musk told fans that the tank had gone to 4.9 bar, which even his Muskness admitted was "kind of a softball" but will be enough for the company to attempt to fly (and land) the prototype.

That first flight will take place following the fitting and test firing of a single Raptor engine, which Musk [3]hoped would take place next week . While later versions will be outfitted with three Raptors, SN4 will stick with just the one, which should still be sufficient to lift the stage for a 150m "hop".

Starlinks and static fires

While Elon Musk's latest Starship managed to survive its latest round of testing, SpaceX engineers busied themselves with test firing the first and second stages of the Falcon 9 rocket that will form the basis of the first operational mission (Crew-1) to the ISS. Assuming Demo-2, which is due to launch a pair of astronauts from US soil for the first time since the Space Shuttle programme was shut down, works as planned next month.

The team at SpaceX’s rocket development facility in McGregor, Texas completed a static fire test today of the Falcon 9 first stage that will launch Crew Dragon’s first operational mission (Crew-1) with 3 [4]@NASA astronauts and 1 [5]@jaxa_en astronaut on board later this year [6]pic.twitter.com/iagTmZUXDu — SpaceX (@SpaceX) [7]April 24, 2020

The six-month mission, tentatively scheduled for August, will see [8]four crew loaded into the Crew Dragon capsule – NASA's Shannon Walker, Michael Hopkins, Victor Glover Jr and JAXA's Soichi Noguchi.

The test came after SpaceX successfully landed a Falcon 9 first stage on its drone ship following the deployment of another 60 Starlink satellites. The launch was the fourth for this particular booster and the successful landing came as a relief following the previous two Starlink launches, both of which failed to land intact.

The successful launch leaves the company with 420 operational satellites ( [9]according to Musk , although others put the count at 417), much to the unalloyed joy of professional sky watchers.

The launch was also notable for being the 84th Falcon 9 launch, making the SpaceX booster the busiest US operational rocket, ahead of the Atlas V and its 83 launches. However, before Musk fans get too overexcited, it is worth noting that other than depositing a satellite in the wrong orbit in 2007 (a mission that was subsequently declared a success) the Atlas V has never suffered a failure.

The Falcon 9, on the other hand, has gone foom – both on the pad and during flight. However, at its current cadence (the next Starlink launch is due next month) it seems likely that SpaceX will soon overhaul its rival in terms of consecutive success.

Russian Progress freighter rockets to the ISS in less than four hours

The last Russian freighter before the US commences flying astronauts in its own spacecraft, Progress 75, [10]left Baikonur Cosmodrome at 01:51 UTC on 25 April, carrying almost three tons of food, fuel and supplies for the ISS.

The uncrewed freighter [11]docked to the Zvezda Service Module at 05:12 UTC, a little more than three hours after lift-off. It will remain attached to the ISS for the next seven months or so, in which time it is expected that at least two US crews will arrive without the need of Russia's workhorse Soyuz (although NASA will continue to fly astronauts in Soyuz at least into 2021). ®

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[1] https://t.co/EJakThZRGF

[2] https://twitter.com/elonmusk/status/1254632509863866368?ref_src=twsrc%5Etfw

[3] https://twitter.com/elonmusk/status/1254640181283639296

[4] https://twitter.com/NASA?ref_src=twsrc%5Etfw

[5] https://twitter.com/JAXA_en?ref_src=twsrc%5Etfw

[6] https://t.co/iagTmZUXDu

[7] https://twitter.com/SpaceX/status/1253831072795684864?ref_src=twsrc%5Etfw

[8] https://www.nasa.gov/press-release/nasa-adds-shannon-walker-to-first-operational-crewed-spacex-mission

[9] https://twitter.com/elonmusk/status/1253084960057176068

[10] https://blogs.nasa.gov/spacestation/2020/04/24/russian-resupply-ship-headed-for-station/

[11] https://blogs.nasa.gov/spacestation/2020/04/25/progress-cargo-ship-docked-to-station/

[12] https://go.theregister.co.uk/tl/1936/-8579/choosing-a-low-code-vendor?td=wptl1936

When will Starlink become operational?

SJA

When will Stralink become operational? My inlaws have crappy internet access. Best ist over shaky 3G :(

Re: When will Starlink become operational?

Dvon of Edzore

Outside the US, talk to your government. Inside the US it will start testing with SpaceX and Tesla employees later this year.

Re: When will Starlink become operational?

Brangdon

Private beta in 3 months, public beta in 6, for higher latitudes in North America.

This may be a really obvious question.

IGotOut

But who is this very expensive internet connection aimed at?

I would of thought the monthly bills on this link are going to be pretty high.

Re: This may be a really obvious question.

Vulch

Guesses have said $80 a month, Elon has mentioned $90 recently. Aimed at anyone with no sensible broadband.

Re: This may be a really obvious question.

Brangdon

It's aimed at people in rural areas who don't already have cable or equivalent. It can't serve many people within a given area, so won't be for people in cities. Price is expected to be around $80/month. Even if it is higher, it's not expected to be ludicrously expensive.

Re: This may be a really obvious question.

S4qFBxkFFg

The obvious answer is existing satellite internet customers (aircraft, ships, and people unable to get fixed line or 3/4/5G mobile internet).

Apparently the military are also interested. Also (once inter-satellite links, whether laser or radio or microwave are available) financial institutions may use it - the latency could be better than cables, allowing superior arbitrage to competitors, etc. (at least until we have through-planet neutrino communication).

Do one thing and do it well.

- Andrew Grover, ACPI maintainer on Linux-power.