boatgeek
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- Dec 27, 2014
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Could you run the sim with a K350 as the last stage? It's a lot slower burn so it might be lower drag in the places where it counts. On the other hand, you lose a lot of impulse so it might not be worth it.Agreed the motor thrust is nicely conservative. It is worth noting the booster section on my rocket with a motor mount is only 5 pounds. I could easily double wall this entire rocket and keep the mass low. Paper has some real advantages It is worth noting that a lot of the composite rockets are over-engineered.
The biggest issue I see on the sim is the sustainer velocity. It is over Mach 3. I always paint my plywood with West Systems epoxy to seal them, but I suspect that is an issue.
Alternatively, you could do a minimum diameter final stage with a Loki L840 or L480 for roughly the same impulse.