JosephG

I will build a surveillance UAV, and I want to maximize the flying distance so it can cover as many kms as possible on one full tank. I'm looking at the "TAM-5/The Spirit of Butts' Farm" for inspiration. Size and performance looks very much like what I need. However that was a one-off event, maybe hard to replicate. But on the other hand, it had a max weight limit of 5 kg that I can ignore.

How would you go about building such a plane? Hopefully mostly off the shelf parts.

(I tried to link to Wikipedia, but it was not allowed, but you can Google "The Spirit of Butts' Farm" to read more.)

Engine: I assume 4-stroke or is there a more fuel efficient type? Optimum fuel mix? Fuel price not an issue. Reliability is an issue (24+ hrs in the air), so what brand and model would you prefer? I'm looking at the 11cc Saito FG-11 as a starting point.

Body: 150-200 cm wingspan seems about right. Acrobatics and looks unimportant. Powered glider or traditional? Any kit suggestions?

Any suggestions, or links to similar discussions/projects?

Thanks,
Joe