I'm basically lazy. I like to reuse exiting engineering instead of coming up with my own.
This is an R/C glider conversion. The original airframe is from here: http://www.hobbyking.com/hobbyking/s..._Plug_Fly.html . The modification is reverseable--I can change between electric and rocket motor mount in the field. Being able to fly the model on electric power before launching it on a rocket gives me confidence in the model's trim.
Initial flights are on SU Aerotech E15-PW. Subsequent modifications allow the use of 32mm RMS case, and the model flies on F16 and G12 reloads.
My intention is to ultimately fly this model on an I49N for my L1 cert.