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This is a 54mm screw together case that I made it is 32.5" long including the boat tail/nozzle/thrust ring aft closure. It holds 28.625" of propellant. With swamp gas as the formula it works out to the following..
9 grains @ 3.180" with .75 cores, .68 noz, Kn 287-324, 500 psi,
2997 NS, 3.56 sec burn, L-852
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Here's what the motors going into. It should be about 52" long dual deployment and around 40 oz ready to go without the motor. If the motor lites it will be a cool flight one way or another! It's 3 layer of 5.7 oz carbon fiber. The motor case was used as the mandrel. The fins started out as .063 G-10 then a layer of carbon was vaccum bagged to each side. Epoxy/carbon filtets . One and a half layers of carbon fiber tip to tip. The nose cone design is optimized for upper mach flights. Turned from a wood blank. A mold was pulled from the blank. The electronics bay/coupler was made from a spent K250 motor with a removable bulkhead. To see more on the construction of this rocket go here
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I was able to fly the rocket at Aeronaut 2006. (Photo on left) It flew on a L850 Swamp Gas motor. The rocket ready to fly less motor was 35 oz. With motor it was 8.4 pounds. It flew out of a (small) tower (problem leaving the tower) and went 23,002' I used a G-Wiz 800 and had a Walsotn in the electronics bay. All the clear laquer was burned off and may account for the lower the predicted altitude. For Balls 06 (photo on right) I wet sanded the entire rocket back to it's carbon epoxy finish. Flew on the same motor with an ARTS and launched form a larger tower. Click here to see ARTS flight info Went to 29,040' at just over nach 2. There was still some burning of (?) but not near as much as the first flight. I have just started on my next rocket. It's built around a 10 grain 5" motor. I hope to get close to 50K. Stay tuned. Video of a 3" min dia rocket similar to this rocket. Flew on an AT M650
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