One of the most important build steps for supersonic flight.
I borrowed Erik’s fin-alignment jig, but I noticed an unacceptable degree of warpage in the tilt plate itself. So I am just using it here to hold the bottom section of the airframe securely level, and I’m relying on the snug fit of two fiberglass alignment plates to get the angles right while the JB Weld cures.
The first test flight for this rocket (name TBD, currently All Carbon) will be a Cesaroni N1100 moonburner. That should be a relatively soft 12.5-second burn to 1,000 MPH, followed by a long coast to a good altitude.
If I turn to the largest motors, she will break Mach 3 according to the simulator (below). I will be focus a lot of effort on those fins! Next step is some high-temp epoxy with chopped fiber for fillets, and then a couple layers of carbon fiber laid down laterally from fin-tip across the body to the opposing fin-tip.
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