The word is the HyShot folks want to build a hypersonic free flyer. The vehicle that was just successfully tested was a supersonic combuster producing no thrust and still attached to a rocket's second stage (calling it a "scramjet" was baloney for the news media). Building a free flyer is vastly more difficult. I would really be pleased if the University of Queensland folks could pull this off. Unfortunately I think building a free flyer as their next vehicle wouble be too big of a technology step (their current funding is fragile and does not tolerate failure). I would be happier to see them fly a true scramjet still attached to a rocket's second stage and then attempt a free flyer after attracting significant funding.

Gary