DynaSoar
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- Mar 14, 2004
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I've been working on a design for a few months now where the airframe itself is a cluster of minimum diameter tubes, rather than a larger tube with a cluster of motor tubes inside. The theory being that with 1/3 less frontal cross section (the major source of drag) it'd out perform the cluster-inside-airframe design.
When building the first of the three, I asked Sandman to carve me out a special transition, which I further carved into a smooth transition from three tubes to one. I chose to name it after him. The three birds are in the attached picture; the Sandman is the one on the left. It's essentially three 30" long 24mm (BT50) tubes filleted along their length, with the fins glued into the joints (giving them double the contact area and so less likely to sheer).
I finally got a chance to test the design. For the shake down flight I decided to keep things low power. I built three 18 to 24 mm motor adapters, loaded them up with C6-5s, and packed it for flight. Locked and loaded, it weighed 9 ounces.
Continued on next message because I can't figure out how to put two pictures in one messsage.
When building the first of the three, I asked Sandman to carve me out a special transition, which I further carved into a smooth transition from three tubes to one. I chose to name it after him. The three birds are in the attached picture; the Sandman is the one on the left. It's essentially three 30" long 24mm (BT50) tubes filleted along their length, with the fins glued into the joints (giving them double the contact area and so less likely to sheer).
I finally got a chance to test the design. For the shake down flight I decided to keep things low power. I built three 18 to 24 mm motor adapters, loaded them up with C6-5s, and packed it for flight. Locked and loaded, it weighed 9 ounces.
Continued on next message because I can't figure out how to put two pictures in one messsage.