ExplainSci on Instagram: "🔥 How’s Work Afterburner? The Jet Engine Secret That Turns Thrust Into Thunder ✈️ Ever wondered how a fighter jet goes from fast… to freaking supersonic in seconds? The answer lies in one of the most dramatic (and misunderstood) upgrades in aviation history: the afterburner. 💡 So, what is it? The afterburner is like NOS for jet engines. Once a jet hits high speeds, it injects extra fuel directly into the exhaust stream — after the main combustion has already happened.