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20 kN cryogenic methane / liquid oxygen rocket engine ready to fire. Generated autonomously in a matter of hours by the Noyron Large Computational Engineering Model. Metal 3D-printed in copper (CuCrZr). From pure spec to test in less than 3 weeks.

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LEAP 71

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22,796 просмотров • 5 месяцев назад •via X (Twitter)

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This video shows a static fire test of the Archimedes rocket engine, developed by Rocket Lab. Archimedes uses liquid methane (LCH.) as fuel and liquid oxygen (LOX) as the oxidizer, a combination known as methalox. During combustion, these cryogenic propellants produce extremely high temperatures (over 3,000°C), hotter than lava. To survive this, the engine circulates cold fuel through its walls before burning it, a technique called regenerative cooling. Multiple Archimedes engines will power Rocket Lab's upcoming Neutron rocket, which is being built to launch satellites and cargo to orbit with lower cost and higher reliability. Rocket Lab is best known for its Electron rocket and is now expanding into larger, reusable launch vehicles with Neutron.

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Every week, our team conducts fire tests to validate the performance, reliability, and endurance of COSMOS engine. As the largest methane-fueled rocket engine developed in Japan, it requires a high-frequency testing to gather critical data rapidly, accelerating our development.
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NIH scientists found that retinal organoids, lab-grown models of the human retina, often don't get enough oxygen during early development. To solve this problem, they created a simple 3D-printed stirred bioreactor that keeps oxygen levels in a healthy range. The result: larger, healthier retinal organoids with improved survival and more consistent growth. This low-cost, easy-to-use tool could help researchers create better models to study blinding diseases and test potential treatments. Read more:

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Every day I will teach you some "alien physics" here! Movie 1 shows a Corbino disc rotating under DC power (about 100 amps) with liquid-metal galinstan. Slide 2 shows a schematic version from our textbooks. Slide 3 shows a schematic version which was drawn in a field near Avebury Ring in August 2012. Slide 4 shows how large and detailed it was, with people standing in it! This was part of a series in July-August 2012 meant to teach us the physics of UFO levitation. Think "Maury Island 1947". When we add 3-phase power to a magnet just above this liquid-metal device, then it should lift up like a UFO. Experiments soon when I get the chance. 🛸

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