Grasshopper and F9R-1 (their newer test vehicle) are widely believed to fly with...

rst on July 14, 2014 | parent | context | favorite | on: Orbcomm OG2 Falcon 9 Satellite Launch

Grasshopper and F9R-1 (their newer test vehicle) are widely believed to fly with extra mass as ballast in order to make them easier to control -- most likely just as extra fuel in the tanks which they don't plan to burn on that flight.