We have recently discovered a way to build hybrid gas/electric-powered multi-copters and would like to share it with you.
The main advantages are:
1) Heavy lift - due to gas engine power
2) Long endurance - due to high gas fuel power density
3) Safety - power source redundancy for safe landing
For the full description of the idea please have a look at: http://www.gas-copter.com/Description
We are also looking for partners to help us with prototyping and commercializing the idea.
You comments in the blog are welcome ...
The gas-copter.com team