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Rocket Test Fire

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Looking at the exhaust bell of a rocket engine before test firing.

Initial propellant burns green as the rocket starts. Shock waves move bursts of flame in the rocket's exhaust.

As flow through the rocket gets established, a series of standing shock waves create a diamond pattern in the exhaust.

←Smilde Clouds

Bullet Versus Explosion→

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April 20, 2026

FYFD

Celebrating the physics of all that flows

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