TechnologyARMY on Instagram: "Before an F-15 Eagle ever takes flight, its heart — the Pratt & Whitney F100 engine — faces hell on Earth. 🔥 Inside a test cell, the engine is pushed to its absolute limits, enduring scorching heat, hurricane-force airflow, and violent vibration. Thousands of sensors record everything: thrust, fuel burn, exhaust temperature, and pressure levels — all analyzed in real time. Air rushes through the engine at over 1,000 km/h, and even a microscopic crack or a lo