Ripl Rotary ICE and Ripl EMRailgun - just two of Ripl's technologies under development. Owners and developers of evolved technologies in Defence, Automotive, and Aerial Transport sectors, Ripl has access to some of the most inventive minds in the UK. Super-efficient multi-fuel Rotary Engine Next-gen Electro Magnetic Rail Gun Our business model supports commercial collaboration with government and industry organisations to license, sell, or further develop a pioneering suite of next-gen systems.