Coke Bottle Recycling Center Build Page |
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| 71" Coke Bottle Recycling Center Hexagonal Fin - RockSim File |
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| Videos: |
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| First flight of the Mega Coke Bottle on a K815-SK to 615 feet during Northwood's Spring Program, 2013. |
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| Second flight of the Mega Coke Bottle POV (WATCH THIS FIRST) on an L935-IM to 1,150 feet during Northwood's Spring Program, 2013. |
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| Second flight Mega Coke Bottle on an L935-IM to 1,150 feet during Northwood's Spring Program, 2013. |
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| Certification Flight (Third flight) on an M1830-CS to 1872 feet at URRF on the Summer Solstice June 21, 2013. |
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| Build Photos: |
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| Testing the strength of the fin/pedestal: 225 lbs. standing on one foot on the upside-down fin/pedestal supported by four pieces of 3/4" pine. This is equivalent to the force of over 55 lbs. pulling down on each fin. |
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| Looking down on the top centering ring in the bottom of the rocket. This centering ring bolts (with the two shock-cord eye-bolts)the Motor-Mount-Tube to the four supports bolted to the rocket body. The six inch diameter circle at bottom left shows room for "standard" chute deployment tubes. |
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| Looking further into the bottom of the Mega Coke bottle. One can see the four supports around the perimeter. In the centering ring, one can see the two 3/8 inch "T" nuts which receive the eye-bolts. One can also see two of the three carbon-fiber motor-mount-tube supports. Toward the bottom is the upper centering ring for the three 38 mm motor-mount-tubes. The centering ring at the very bottom shows four of the six 1/4 inch "T" nuts for fixing the tube-fin/pedestal assembly. |
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The inside of the bottom of the recycling center showing three 38 mm and one center 76 mm motor-mount-tubes. |
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| Looking "up" into the nosecone. The closest centering ring will be glued to the foreward tube and bolted by the two 3/8 inch eye-bolts to the next centering ring which wedges the tube into the nosecone. The tube can slide in the lowest centering ring visible in the picture below allowing the fixture to be twisted and locked into place. |
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The tube is scewed to the nosecone by the three 1/4 inch "T" nuts in centerings at the top of the nosecone. |
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The three carbon fiber supports strengthen the nosecone tube fixture inside the tube. |
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On the left: the recycling center with scale models from 12 oz., 16.9 oz., 20 oz., 1 L, and 2 L Coke bottles.
On the right: outside rocket body vs. inside motor-mount-tubes. Note: The aft nosecone centering ring has slipped down 10" to 12". It will be positioned above the opening to help hold the tube in the nosecone. |
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