Thanks Iskess for the warm welcome. Happy to be here!
I agree the quadplane community is still small, but hopefully we can have some rigorous discussions here on how to optimize their use and capabilities! Until now it's been hard to find like minded and capable co-developors, so maybe we can team up to keep the ball rolling. I'm a part of the PerthUAV team who are going to the UAV Outback Challenge in September this year. We are using a Talon derived airframe converted to a quadplane using 5g ESC's and tiny 35g 2206 motors for the h-quad setup...we still have over 4kg of thrust on 6x4.5 props however! It's a fairly efficient setup using around 5-6A at 20m/s cruise in forward flight so running two 5.2Ah batteries will get you a fair distance.
I have a few ideas still chasing around in my head that I'd like to explore to improve on this further, in particular I'm keen on getting rid of as many "bits" on a quadplane as possible...things like wings (high stall speed flying body would be better) at least two motors (so a differential, thrust vectoring tricopter with asymmetric mono-prop main rotor) along with a bunch of electronics etc. Ultimately I'd like to have a fold-up portable wing under 1.5kg that can take a 500g payload and cruises at around 30-40m/s for about 2 hours on electric only, and that can VTOL of course!
A part of that is to replicate bird flying dynamics for landing and takeoff; so a lot of effort for a short period to VTOL, but then easy sailing once in the air. I also prefer speed over endurance to achieve the best range and coverage in the shortest amount of time, as this results in the most effective imaging/surveying/SAR capability.
BTW if you need a hand to get SITL for quadplane running just let me know, maybe we can start a new thread for that. Alternatively I have a working Raspberry Pi image that you can download, which should run out of the box if you have a Pi to put it in. It's well worth it for mission planning and testing, because you don't have to worry at all about crashing some bits and bytes...