Designed specifically for t' NARRRRR B Cluster Altitude event. Begad! Blimey!  This was  a ”qualified flight” mode, nay expected t' be competitive.  Designed around an 18” BT-70 body tube with a 5x18mm cluster motor mount and a 4.25 inch rounded olive balsa nose cone.  T' design was nay stable accordin' t' RocSim so t' nose cone was modified t' accept some ballast weight in t' form o' a large heavy screw eye.  vent Holes were drilled in t' body tube t' provide good ambient air pressure t' t' altimeter.