Be like a SpaceX rocket in quarantine: pressurized yet chilled and not exploding

From Ars Technica:

Late on Sunday night, SpaceX completed a critical cryogenic test of a Starship prototype at its launch site in South Texas. [] The vehicle, dubbed SN4which stands for Serial Number 4was pressurized to 4.9 bar, or 4.9 times the atmospheric pressure at the surface of the Earth. This pressure is not as high as Starship's fuel tanks and plumbing system are designed to withstand, but it is enough for a basic flight.

This marks an important moment in the Starship program. Since November 2019, the companyhas lostthree full-scale Starship prototypes during cryogenic and pressure tests. The most recent failure came on April 3. This is the first time a vehicle has survived pressure testing to advance to further work. Such tests are designed to ensure the integrity of a rocket's fueling system prior to lighting an engine.

SN4 passed cryo proof! pic.twitter.com/EJakThZRGF

— Elon Musk (@elonmusk) April 27, 2020

So it's been chilled, but also highly pressurized, and is somehow still holding it together. Which is also how I feel every day of quarantine.

Starship chilled. Starship pressurized. And for the first time, it didnt explode. [Eric Berger / Ars Technica]

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