Is it a balloon or a plane?

Scientists say unmanned aerial vehicles powered by variable-buoyancy propulsion could be the future of satellites.

A team led by Prof Andrew Rae, from the University of the Highlands and Islands, say they have created the world's first large-scale aircraft powered by variable-buoyancy propulsion.

Future versions of Phoenix could be fitted with cameras and deployed in surveillance work.

  • Subsection
  • Published