This is a mashup of 3D-printed verison of the Estes Luna Bug model rocket kit (that is exclusively sold by Hobby Lobby craft stores)
https://www.thingiverse.com/thing:3838810 I designed and the X-15 space plane from the 1960s.
The store bought model rocket kit uses 13mm mini-motors. This version can use larger motors. The integrated launch lug uses a 3/16 inch (4.76mm) launch rod. No motor mount is included with this model. There is one version with and one without an attached nose cone.
The individual parts of the rocket are also included with this model. Both the model and the individual parts can be scaled up or down to suit your needs.
This model is scaled up to:
1) an airframe ID of 2.07 inche (52.8mm), The closest standard paper or fiberglass airframe tubing it will fit is 54mm x 212mm (8.35 inches) in length.
2) a total height of about 15.5 inches (400mm),
3) the center of the airframe to the center of the fin pad is about 5.3 inches (135mm).
Thanks to Cybus for designing the nozzle that is sized to fit the airframe tube.
Thanks to WRRL for designing the X-15 nose cone that has been sized properly for the diameter of the airframe tube.
The wings are borrowed from my Enerjet 1340 supersonic fin can design.