I'll post it if I find it.

The video above was only the taxi tests.

Looks and sounds like some sort of propane or LNG motor.  I don’t read Japanese so maybe the captions describe it.  

The black tanks up front under the cowl are pneumatic tanks for the gear.

Amazing lightweight construction throughout.

t can be daunting to do the engineering to ensure there is strength in the parts that need it. 

Does the Japanese have a large model inspection program? Similar to our AMA program. 

Progress in the UAV world has the technology to provide redundant electronic  systems to ensure sucess.

Kind of cool that the kids and apparently the build could sit in the CP. 

Sparky