The fincan is built using a standard slotted fin and ring approach, which provides structural integrity and precision alignment for the fins.The fin tabs extend to the tail-cone/inter-stage section, ensuring the assembly stays square and aligned.
The design uses two almost identical fincans, one with recovery attachments and one with plumbing for the staging system. Both have recovery attachments and spliced kevlar lines for the recovery system.
Slotted phenolic airframe slides on to the fin-can and is secured to the tail-cone surface. The first stage booster inter-stage sdapter slides into the phenolic coupler in the tail-cone.
The 3D printed tail-cone is lined with a phenolic airframe tube that provides heat protection for the 3D printed part and also provides a surface for the booster stage to attach to.
The inter-stage design allows for easily flying a single-stage using dual deployment.