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How does a rotating detonation rocket engine work?

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China pulse 🇨🇳

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There’s a new rocket engine on the block 👀🚀 Astrobotic just announced that its newly developed “Chakram” Rotating Detonation Rocket Engine successfully completed its first test campaign. RDREs have long been theorized as a highly efficient form of propulsion, but only in the last five years or so have they started becoming reality. They work by sustaining supersonic rotating detonation waves inside the engine, helping improve efficiency across a range of operating pressures. Chakram produced more than 4,000 pounds of thrust and fired for 300 seconds during testing. Astrobotic
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There’s a new rocket engine on the block 👀🚀 Astrobotic just announced that its newly developed “Chakram” Rotating Detonation Rocket Engine successfully completed its first test campaign. RDREs have long been theorized as a highly efficient form of propulsion, but only in the last five years or so have they started becoming reality. They work by sustaining supersonic rotating detonation waves inside the engine, helping improve efficiency across a range of operating pressures. Chakram produced more than 4,000 pounds of thrust and fired for 300 seconds during testing. Astrobotic

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We fired a really cool rocket engine - and broke some records while we were at it. 🔥This Rotating Detonation Rocket Engine produced more than 4,000 pounds of thrust, and included a 300-second continuous burn, which is believed to have set the record for longest duration hot firing of an RDRE engine to date. Watch it fire:
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We fired a really cool rocket engine - and broke some records while we were at it. 🔥This Rotating Detonation Rocket Engine produced more than 4,000 pounds of thrust, and included a 300-second continuous burn, which is believed to have set the record for longest duration hot firing of an RDRE engine to date. Watch it fire:

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Venus Aerospace is building a detonation ramjet engine. It's a unique design: one engine to go from Mach 0 to Mach 6, with a rotating-detonation rocket engine upstream and a ramjet downstream. The rocket starts the flight, and the ramjet brings the specific impulse you need for commercial air travel. I invited Venus CTO Andrew Duggleby to the Astranis office to talk about how it works, what he's already demonstrated (a lot!), and what is left between Venus Aerospace and hypersonic flight. Timestamps: 0:00:00 — Introducing the detonation ramjet 0:04:27 — How rockets can be more efficient than turbofans 0:09:10 — Riding up the ISP curve with a ramjet 0:13:07 — What has Venus built so far? 0:22:40 — The driving constraint: heat 0:25:17 — Is this too hard to model with CFD tools? 0:30:52 — How did you prove to yourself this could work? 0:33:09 — How does this approach differ from other super/hypersonic jets? 0:38:30 — How is the government supporting hypersonic development? 0:40:36 — Was a Twitter commenter correct to roast my earlier video on ramjets? 0:45:20 — Why not just use normal rockets for point-to-point transportation? 0:47:50 — How does this engine work for takeoff and landing? 0:51:15 — "If I could add a new regulation..." 0:55:30 — "Hypersonics is the speed at which heat kicks your ass" 0:58:31 — What's the next big technical demo?
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