These are great pictures thanks. It is good to see some new designs .
I find the first picture of the Gyro crop sprayer interesting. It would be nice to know how it compares to a fixed wing. It is probably slower than a plane , but would be quicker in the turns and maneuverability would be better.
It would be good to hear from a pilot who has flown both.
The co-axial helicopter is one of the "cleanest" designs ever.