SpaceX Starship Test Rocket Was Knocked Over By High Winds (popularmechanics.com)

Strong Texas winds managed to knock over SpaceX's prototype of its next-generation Starship rocket. In a tweet, CEO Elon Musk tweeted yesterday: "50 mph winds broke the mooring blocks late last night & fairing was blown over. Will take a few weeks to repair." He added: "Actual [fuel] tanks are fine." Popular Mechanics reports: The hopper, based out of the company's launch site in Boca Chica, Texas, is not meant for the stars: It is a test machine meant to show that the Starship's fundamentals can work in terms of launching and landing. SpaceX wants the rocket to go 16,400 feet into the air (a hop, so to speak) and land again. The wind, sadly, had other plans and knocked the hopper's nosecone around.

The accident appears to have first reached the public through eagle-eyed SpaceX aficionados on a message board which updates with even the smallest changes in anything related to the company's plans. Their methods include everything from drone flyovers to driving by the site. It's hard to tell what damage has precisely happened to the hopper in its fall, but it appears to be more complex than simply righting back up again.

Comments

Re:Shiny

[Rei]

On purpose. The reentry system being tested for Starship is very different from any other ever used. Normally the goal is to radiate heat, so you want a high emissivity (generally black) material. Starship (the actual vehicle, not this test hopper) on the other hand is designed to never get excessively hot in the first place - a double-layer skin with liquid between the layers and the outer layer perforated by tiny holes, through which heated coolant can vaporize out (creating a protective boundary layer while simultaneously removing heat). So the goal is to reject heat rather than absorb-then-radiate it. This means a low emissivity material, which generally means "shiny". :)

It's still going to get tremendously hot, of course - the craft is being designed for direct aerocapture from MTO. So alumium is right out. But stainless is such a great material for so many reasons... most of which is its resilience. Something which carbon fibre isn't, and a big reason I was very apprehensive about SpaceX's original BFR design. It's also 1/50th the cost, comparably easy to work with, and people who know how to do so are a dime a dozen. It's strong, very inert (even in hostile environments), and with the right alloy retains its resilience even at cryogenic temperatures, while its tensile strength only grows. I'm very happy with the switch. Heck, it's even higher-Z, meaning it'll be more effective at blocking solar radiation (won't do much against GCR except kick off secondary radiation, but GCR is a far lower flux).