This is a clone of an Estes Teros, #1285.  Originally a cold power convertible in the mid '70s, Estes changed it to conventional power by the early '80s.  I built this little guy after buying a BNC-50BC ramjet-style nose cone from Semroc with some other stuff, then had to decide how to use it. 

My build is pretty standard, except use of basswood for the fins and a nylon parachute.  Painted with Rustoleum 2X Fire Orange & white.