Reviews

• Scratch Flatblack By Larry Brand

  ( Contributed - by Larry Brand - 11/18/04) Brief: I designed Flatblack for the 2004 BRS contest. It is a tubefin rocket that introduces epoxy-laminated, high-aspect ratio tube fins (wider than they are long) to take advantage of an aerodymanic trick to power a short, light airframe with heavy motors. This feature allows the small (18' long, 75 gram) to fly well on any B-C-D-E-F motors ...