Semroc Gee'hod. I first roughed them out based on drawing of the P-51D that I found on the Web. I laid these out on a rough profile of the SpaceShipOne's body. All the components, except the lower 'air intake' are cut from dense 1/8" balsa and the intake is 1/4" balsa. The wings are 2-part because I only had 4" wide stock and the whole wing wouldn't fit with the proper grain orientation. All wing/fin parts were laminated with full page label stock. The edges were treated with thin CA and minor imperfections were filled with Fill'n'Finish.
I Build Rockets plywood shock cord mount. This serves as a motor block and and could be the attachment point for a steel leader. However, I was worried that its proximity to the motor could result in an over pressurization. That is, the mount might be ejected. As a result, I chose to mount a Kevlar leader through the rocket's body adjacent to the launch lug.
This photo is the in-progress tail cone. I roughed out the rear opening and sealed the rear gaps with SuperFil epoxy clay. One thing I learned from the Sqrt(-1) is that 24mm ejection charges are tough on plastic cones. The upper ring on the SpaceShipOne leaves almost half of the cone exposed - not good. So, I made a double layer, card stock cone to fit between the inside if the shoulder to the upper ring. That should keep the hot gasses away from the wimpy plastic.
Here, I have attached the the wings, fins and all related structures. Along the way, I readjusted the cockpit and intake sections. They looked OK but sat too far forward (stability issue). Next, I added some sections of FirstFire tubes under each wing. Either will work as a launch lug on 3/16" or 1/4" rods. They look ordinance-like, so they should fit in well enough. Finally, I settled on a 2.125" plywood disk, cut in half, for the wing mounted 'landing gear'.
Finally, I cut the base off the cone to provide a little extra space for the laundry. For the nose cone weight, I embedded lead shot in epoxy. I set the weight to provide a margin of 0.9 with a D12-5 loaded. Should get to around 600'.
The decals were printed on Testor's clear decal sheets (link to my detailed review). I roughed out the decals in GIMP and then sent them to my other computer so I could make the background transparent. The decals came out less than perfect but are fine for a first try. The final trim scheme is a very 'goonie' version, incorporating a V2 rocket girl logo, an MDRA logo, and numerical designation matching the motor she will fly on.
Flight and Recovery:
I flew the Zoomie P-51-D on the motor whose designation is marked on its fuselage. I added two pieces of Quest wadding wrapped around a small handful of dog barf and clipped on an 18" Nylon 'chute. It weather cocked and 'flew' into the prevailing wind. Ejection was late but it recovered with no damage. Still, a 3 sec. delay would be advised. For future reference, the plywood motor block/shock cord mount did not come loose.