
Canon EOS 5D Mark IV
ƒ/8
400 mm
1/2,000
250
A Q-motor dart from the camp next to ours. A dart is a narrow upper stage, relative to the fat booster. When the booster burns out, the dart drag-separates from inertia (and less drag) and can go very high. Packing a flight computer and a chute into a tiny cylinder and getting the coupler alignment perfect can be tricky!
From the rocket 🚀 builder, Noah: “it split below all the couplers in the thickest part of the carbon fiber. It bent the motor case for the dart. Kinda a wild failure.” 
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