Until then, the next time you watch a launch webcast and hear the commentator say, “Payload deployment confirmed,” spare a thought for the last object to separate.
The fairing jettisons. The ingot, still bolted in place, is now exposed to the vacuum of space. It heats up to 120°C on the sun-facing side and drops to -100°C on the dark side. It doesn’t care. launch ingot
As the rocket fuels, the ingot is doing its only job: being heavy. It pushes the center of gravity aft, reducing bending loads on the interstage. Until then, the next time you watch a
But as on-orbit manufacturing and refueling become real, the ingot’s days are numbered. Future rockets will likely use or active mass shifters to balance the stack, turning the ballast into usable fuel. It heats up to 120°C on the sun-facing
In response, several startups are now developing —magnesium-aluminum alloys designed to re-enter and fully ablate within 90 days. Others are experimenting with hollow water ingots (frozen, then sublimated in space), though the risk of ice shards damaging the fairing remains high. The Technician’s Curse Back on the ground, the ingot enjoys a strange kind of reverence.