SPARX BW is the fastest blimp designed so far. The envelope is custom designed and in-house manufactured. It gets the name BW (Blue Whale) from the shape, size, and color of the envelope. This is the first blimp in our arsenal to sport tilt-rotor configuration. The beast is power-packed with a 1000mah 2S battery which gives an operating time of over 45 minutes. This blimp was used as the primary agent in the 99++ Luft Balloons Competition, April 21'.