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Solving the reusable heat shield is the single biggest problem Starship has~ Elon Musk

Ellie in Space 🚀💫

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26,216 次观看 • 1 年前 •via X (Twitter)

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Elon Musk on reusable heat shield and Mars reentry: — No one has created a truly reusable orbital heat shield before — Reentry involves extreme heat and pressure — very hard to withstand — Only advanced ceramics and carbon-based materials can survive it — SpaceX aims to make the first fully reusable, reliable orbital heat shield... difficult but physically achievable — CO₂ plasma releases free oxygen, which can burn the heat shield — Testing is done in CO₂ to ensure it works for both Earth and Mars

Elon Musk on reusable heat shield and Mars reentry: — No one has created a truly reusable orbital heat shield before — Reentry involves extreme heat and pressure — very hard to withstand — Only advanced ceramics and carbon-based materials can survive it — SpaceX aims to make the first fully reusable, reliable orbital heat shield... difficult but physically achievable — CO₂ plasma releases free oxygen, which can burn the heat shield — Testing is done in CO₂ to ensure it works for both Earth and Mars

Dima Zeniuk

349,392 次观看 • 11 个月前

Elon Musk on Starship at X Takeover: • Starship is one of the hardest engineering challenges ever attempted — three times the thrust of Saturn V and fully reusable • Starship is late, but not impossible • The biggest current hurdle is developing a fully reusable orbital heat shield — something no one has done before • The long-term goal is to make Starship cheaper per ton than even an expendable Falcon 1 • Next major milestone: orbital refilling — transferring mostly liquid oxygen between Starships in space • No one else is seriously attempting this level of reusability or innovation in rocketry

Elon Musk on Starship at X Takeover: • Starship is one of the hardest engineering challenges ever attempted — three times the thrust of Saturn V and fully reusable • Starship is late, but not impossible • The biggest current hurdle is developing a fully reusable orbital heat shield — something no one has done before • The long-term goal is to make Starship cheaper per ton than even an expendable Falcon 1 • Next major milestone: orbital refilling — transferring mostly liquid oxygen between Starships in space • No one else is seriously attempting this level of reusability or innovation in rocketry

Dima Zeniuk

1,208,439 次观看 • 1 年前

Elon Musk on reusable heat shields and Mars reentry: — No one has created a truly reusable orbital heat shield before — Reentry involves extreme heat and pressure — very hard to withstand — Only advanced ceramics and carbon-based materials can survive it — SpaceX aims to make the first fully reusable, reliable orbital heat shield... difficult but physically achievable — CO₂ plasma releases free oxygen, which can burn the heat shield — Testing is done in CO₂ to ensure it works for both Earth and Mars

Elon Musk on reusable heat shields and Mars reentry: — No one has created a truly reusable orbital heat shield before — Reentry involves extreme heat and pressure — very hard to withstand — Only advanced ceramics and carbon-based materials can survive it — SpaceX aims to make the first fully reusable, reliable orbital heat shield... difficult but physically achievable — CO₂ plasma releases free oxygen, which can burn the heat shield — Testing is done in CO₂ to ensure it works for both Earth and Mars

Dima Zeniuk

1,493,427 次观看 • 1 年前

Elon Musk on why a fully reusable orbital heat shield is one of the hardest problems in rocketry: “No one has ever developed a fully reusable orbital heat shield. When you come in from orbital velocity, you come in like a flaming meteor - a raging ball of fire. It’s hard to have a heat shield that doesn’t partially melt or get destroyed in that process” This is exactly the brutal challenge SpaceX is solving right now SpaceX now has the most advanced heat tiles in history. These continuous V3 upgrades ensure the thermal protection system survives extreme reentry without needing complete refurbishment between flights

Elon Musk on why a fully reusable orbital heat shield is one of the hardest problems in rocketry: “No one has ever developed a fully reusable orbital heat shield. When you come in from orbital velocity, you come in like a flaming meteor - a raging ball of fire. It’s hard to have a heat shield that doesn’t partially melt or get destroyed in that process” This is exactly the brutal challenge SpaceX is solving right now SpaceX now has the most advanced heat tiles in history. These continuous V3 upgrades ensure the thermal protection system survives extreme reentry without needing complete refurbishment between flights

X Freeze

95,162 次观看 • 5 个月前

A truly reusable orbital heat shield has never been made, but I think SpaceX has a decent chance of solving it in 2025 and solving it well in 2026

A truly reusable orbital heat shield has never been made, but I think SpaceX has a decent chance of solving it in 2025 and solving it well in 2026

Elon Musk

33,201,280 次观看 • 1 年前

According to Elon Musk, Starship recovery is not looking good right now, though the team still obtained close-up photos of critical regions of the heat shield and engines for future upgrades

According to Elon Musk, Starship recovery is not looking good right now, though the team still obtained close-up photos of critical regions of the heat shield and engines for future upgrades

Dima Zeniuk

13,102 次观看 • 1 个月前

Elon Musk: For Starship to work, we still need to solve a problem that has never been solved by anyone. “What's the single biggest remaining problem for Starship? It's having the heat shield be reusable. No one has ever made a reusable orbital heat shield. The heat shield's got to make it through the ascent phase without shocking a bunch of tiles. And then it's going to come back in and also not lose a bunch of tiles or overheat the main airframe. Isn't that hard because it's kind of fundamentally a consumable. It just needs to last a very long time. We have brought the ship back and had it do a soft landing in the ocean. I've done that a few times. But it lost a lot of tiles. It was not reusable without a lot of work. So even though it did come to a soft landing, it would not have been reusable without a lot of work. So it's not really reusable in that sense. That's the biggest problem that remains. So if you want to be able to land it, refill propellant, and fly again, you can't do this laborious inspection of 40,000 tiles type of thing.” Interview with John Collison and Dwarkesh Patel, February 5, 2026

Elon Musk: For Starship to work, we still need to solve a problem that has never been solved by anyone. “What's the single biggest remaining problem for Starship? It's having the heat shield be reusable. No one has ever made a reusable orbital heat shield. The heat shield's got to make it through the ascent phase without shocking a bunch of tiles. And then it's going to come back in and also not lose a bunch of tiles or overheat the main airframe. Isn't that hard because it's kind of fundamentally a consumable. It just needs to last a very long time. We have brought the ship back and had it do a soft landing in the ocean. I've done that a few times. But it lost a lot of tiles. It was not reusable without a lot of work. So even though it did come to a soft landing, it would not have been reusable without a lot of work. So it's not really reusable in that sense. That's the biggest problem that remains. So if you want to be able to land it, refill propellant, and fly again, you can't do this laborious inspection of 40,000 tiles type of thing.” Interview with John Collison and Dwarkesh Patel, February 5, 2026

ELON CLIPS

41,165 次观看 • 6 个月前

Elon Musk said on SpaceX’s Q2 earnings call that Starship’s heat shield is pretty much a solved problem at this point. "Look, I don’t want to jinx it or anything, but I think I’d consider the heat shield problem solved at this point. We want to take a close look at the ship that is currently floating in the ocean. All indications from data and our visual inspection suggest that we have solved the heat shield problem, which is arguably the single biggest problem. That doesn’t mean we won’t make improvements to the heat shield. Of course, we’ll continue to make improvements to the heat shield, but I would say that we do not see any technical obstacles at this point to achieving full and rapid reusability." 🤯

Elon Musk said on SpaceX’s Q2 earnings call that Starship’s heat shield is pretty much a solved problem at this point. "Look, I don’t want to jinx it or anything, but I think I’d consider the heat shield problem solved at this point. We want to take a close look at the ship that is currently floating in the ocean. All indications from data and our visual inspection suggest that we have solved the heat shield problem, which is arguably the single biggest problem. That doesn’t mean we won’t make improvements to the heat shield. Of course, we’ll continue to make improvements to the heat shield, but I would say that we do not see any technical obstacles at this point to achieving full and rapid reusability." 🤯

Nic Cruz Patane

162,884 次观看 • 1 个月前

Elon Musk says one heat shield problem could kill Starship's reusability for years. Starship is the most complicated machine humans have ever built. The hardest part isn't the engines. It isn't the steel. It isn't even the explosion margin on liftoff. Musk named the one remaining bottleneck. "It's having the heat shield be reusable. No one's ever made a reusable orbital heat shield." The shield does two impossible jobs. "It's gotta make it through the ascent phase without shucking a bunch of tiles, and then it's gotta come back in and also not lose a bunch of tiles or overheat the main airframe." 40,000 tiles per ship. Musk reframed the consumable problem through brake pads: "Your brake pads in your car are also consumable, but they last a very long time." The shield must consume slowly. It must not require inspection between launches. Musk on the current state: "We have brought the ship back and had it do a soft landing in the ocean. But it lost a lot of tiles." A soft landing is not reusability. The bar is daily launches. One ship. Many flights. Musk, on the gap that's left: "You can't do this laborious inspection of 40,000 tiles type of thing." The first reusable heat shield in history is the last gate to Mars. If you're new here, GeniusThinking is a gallery for the greatest minds in economics, psychology, and history. Follow along for more similar content. — Elon Musk ( Elon Musk ), CEO of Tesla and SpaceX, on Dwarkesh Patel's ( Dwarkesh Patel ) podcast

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