materials Archive

darpaDARPA Developing Next Generation Materials for Hypersonic Planes and Weapons

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There two main challenges for hypersonic weapons and vehicles are for engines and rockets to generate the speed and for materials that can survive at the extreme temperatures. Moving at hypersonic speeds of 5 to 25 or more times the …

airplaneSpaceX Super Heavy Booster Will Have a Welded Support Structure

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Elon Musk indicated that the SpaceX Super Heavy Booster will use welded, internal, longitudinal hat stringers . To the degree it may need hoop stiffness (probably not), combine with slosh baffles. Elon provided a general description of the internal structure …

energyFirst Commercial Perovskite Solar Late in 2019 and the Road to Moving the Energy Needle

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Saule Technologies is a leading company working on to commercialize perovskites solar cells. They launched a pilot commercial production line for inkjet printing of perovskites solar cells. They plan to reach 40,000 square meters of panels by the end of …

materialsPorous Nickel is as Strong as Titanium and Five Times Lighter

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Researchers have built a sheet of nickel with nanoscale pores that make it as strong as titanium but four to five times lighter. Titanium is as strong as steel but about twice as light. This new material is strong as …

materialsWafer Scale Hexagonal Boron Nitride Films Have Been Created

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Dongguk University and other Korean researchers have made wafer scale hexagonal boron nitride films with a nearly perfect single-crystalline structure. The film self-assembles on top of liquid gold. Hexagonal boron nitride (hBN) is also called white graphite. They can be …

elon muskEstimate of the Cost Savings for SpaceX Stainless Steel Super Heavy Starship

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Elon Musk has indicated that one of the reasons for switching to stainless steel for the SpaceX Super Heavy Starship was to use $3 per kilogram of steel instead of $200 per kilogram for carbon composite. Above is a rendering …

energyAnother Iron Waste Dam Collapses in Brazil

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Brazil’s mining company Vale has had its second iron tailings dam collapse in the last four years. An iron tailing dam burst on Friday. There are forty confirmed dead and about 200 people are missing. Romeu Zema, the governor of …

elon muskSpaceX Puts in Fuel Tanks into StarHopper and Shows Metallic Heat Shield Tests

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SpaceX continues to march ahead with the Starhopper. They are recovering from the wind damaged nose cone for the Starhopper and they placed fuel tanks into the bottom half of the Starhopper. Elon Musk tweeted out a video clip of …

materialsActive Cooling and Stainless Steel Construction of the SpaceX Super Heavy Starship

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SpaceX has changed the design of the SpaceX Super Heavy Starship to stainless steel. However, the design changes are more complicated than just using stainless steel instead of carbon fiber or aluminum. SpaceX will not need advanced Pica-x ceramic heat …

analysisSpaceX Stainless Steel Rocket Will Be Lighter, Stronger and Have 65X Lower Cost Material

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Elon Musk explained to Popular Mechanics why SpaceX switched to a 300 series alloy of stainless steel. Advanced carbon-fiber structure made very slow progress and the cost per kilogram was $135. There is a lot of cutting and they would …