The MiG-21's nose cone is an inlet cone that automatically moves forward at supersonic speeds to create a shockwave, slowing incoming air to subsonic speeds before it reaches the engine, preventing 'unstart' (engine failure from excessive airflow) and enabling the aircraft to reach Mach 2.
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The Spike That Tames the Wind βοΈπ¬οΈ #military #shorts #aviationAdded:
If you look at the legendary Soviet MiG-21, the first thing you notice is the giant pointed cone sticking out of its nose. It looks like a deadly weapon, but its true function is much more brilliant. It's an inlet cone designed to manage shockwaves. As a jet approaches the speed of sound, the air entering the engine becomes so violent it can actually choke the engine and put it out, a phenomenon known as an unstart. To [music] prevent this, the MiG-21's nose cone is designed to move forward and backward automatically based on the plane's speed. At supersonic speeds, the cone moves forward creating a physical shockwave that slows the air down to subsonic speeds before it hits the engine's sensitive fan blades.
Without this moving spike, the MiG-21 would never be able to reach Mach 2. It is a primitive but genius piece of engineering, a moving mouth that ensures the engine never swallows more air than it can handle, proving that sometimes the most important part of a jet isn't the wings but the mechanical spike in its nose.
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