They are just scrapping the ones that crash. I am not sure if it is melted down or not but I doubt it as it is a pain to get the metallurgy just right to make new pieces since it's mingled with other components.
They might
launch the next one next week, going to the pad today. [url=https://www.nasaspaceflight.com/2021/03/starship-sn11-rollout-spacex-plans-future/][/url]
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NASASpaceflight.com reports that SpaceX already scheduled to transport a new Starship to the launch pad on Monday, March 8th wants that prototype ready to launch as early as next week.
According to the same report, SpaceX having already installed three Raptor engines on Starship serial number 11 (SN11) aims to more or less wrap up all qualification testing by the end of the week. No different than the test campaigns that all other flightworthy Starships had to pass before being cleared for launch, that process includes at minimum a good cryogenic proof test and a combined wet dress rehearsal (WDR) and static fire.
...
Still, it's not entirely impossible. If SpaceX can borrow from the most efficient Starship launches and test campaigns its completed and combine them all with a few new, unspecified efficiencies, it's reasonable to conclude that Starship SN11 could be ready to fly near the end of next week (around March 19th). More specifically, SpaceX would have to complete a successful static fire on the first try within a week of SN11's scheduled March 8th rollout, followed by a brisk two or three-day turnaround for a launch attempt.
While not impossible, it's safe to say that that scenario is unlikely. Nevertheless, assuming SpaceX continues to find ways to expedite preflight processing like it has with SN8, SN9, and SN10, it's reasonable to assume that Starship SN11 could be ready for an inaugural launch attempt as early as the last week of March.
So, in other words, probably not next week. I dunno.
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SN15 Onwards and BN1 Super Heavy:
Starship SN15 is currently in the Mid Bay, waiting for SN11 to depart. Once SN11 is at the pad, SN15 will be moved to the High Bay and receive its nosecone.
SN15 will include a new design for the Thrust Puck and host a greater amount of TPS (Thermal Protection System) tiles.
With the impressive production cadence in mind, SN16 and SN17 will become future stablemates inside the Mid Bay. However, parts up to SN20 including its Leg Skirt have already been spotted by Mary (@bocachicagal).
To aid the test flight schedule, Mary's cameras have observed an increasing amount of Raptor deliveries.