This plan is modernized and updated from a design I saw about 15 years ago by Pete Alway, in
AmericanSpacemodeling magazine. His design was intended to be a gap-staged full-stack Aerobee-Hi, using a BT-60 upper body and a BT-55 booster. His original design was truly gap-staged, with a wide open area between the stages, per the prototype.
The BARCLONE version is just the upper stage of this stack, as I don't have the drawings for the booster available anymore. This version is a 181% upscale of the BARCLONE Aerobee-Hi, which was itself a 10% upscale of the original MMI-EIRP version. This model uses a SEMROC turned balsa nosecone following the dimensions of the currently-OOP PNC-60RL. (Please note: The SEMROC version
also doesn't yet exist, but I'm hoping our good friend Carl will see his way to replicating it and making it available on his website).
Skill Level 1. Not a difficult model at all, in this configuration.
Flies to 900' on a D12-5; 1936' on an E15-7; 2336' on an F21W-8.
Respectable performance, I'd say...
Enjoy!