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@hopzzv: #Hiking #nature #fyp #xyzbca #fypシ
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Monday 14 September 2026 05:30:42 GMT
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A jam jar pulsejet engine is a simple yet fascinating demonstration of reactive propulsion. It works by igniting a fuel-air mixture inside a jar, usually methanol vapor mixed with air, which rapidly combusts and expands. The expanding gases rush out of the opening, creating thrust, while the sudden drop in pressure draws fresh air and fuel back in to repeat the cycle. This repeating cycle of ignition and refill happens many times per second, producing the distinctive pulsing sound that gives the engine its name. Even though it is small and built from basic materials, the physics behind it are the same principles that power full-size jet engines. Each explosion creates a momentary burst of thrust, and together these bursts produce continuous motion. The methanol jam jar pulsejet is often used in classrooms and demonstrations to visualize how pressure waves and timed combustion can generate propulsion. It captures the essence of engineering simplicity, showing that the same forces driving advanced aircraft can be observed in a homemade experiment. The bright flame, rhythmic pulsing, and clear cause-and-effect make it both educational and captivating to watch. Original Video Credit: YouTube/AdhDad420 (No copyright intended, credit to the rightful owners) #History #Science #education #learn #invention
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