RE: Harrier proto.
This is a prototype of VTOL power by an Artes Rhino.
At the first 2 photo, the thrust provide by a turbine mounted vertically.
4 ducted fans mounted at the tips of the plane.
The stability is provided by 3 gyros.
The last 2 photo is the thrust transform system which will be mounted on the plane in the future.
Hope he will success.