Well, considering we do not plan to do any extreme maneuvers in the air; only take off, make a large circle in the air, then land, per competition requirements. What do you recommend for a conservative g force guess? My aerodynamic "common sense" knowledge is very small to say the least
Min used in man-rated airplanes is usually +3.8/-1,9 g. 3.8g Normal category is just so that we can go places, deal with the weather and bumps that are out there. No aerobatics. Stalls and turns up to 60 degrees of bank, +/- 30 pitch. +4.2g/-2.1g Utility is where you can get into Lazy Eights and Chandelles, and in some birds, Spins. Aerobatic is +6g min - this is where you start to do loops, rolls, spins, etc.
I know this is not man rated, but 1.4 says is if you go 45 degree bank and then pull a tiny bit above a level turn or get any upward gust, you just exceeded limits. If the airplane is built to those limits, the wings fail right there. Then there is the typical plop type landing that RC's and drones typically make...
A while back I was a named volunteer consultant for composite structure to a team that did a design-build-fly senior project at Western Michigan University. We stated 10 g with a FOS of 2, so it was a 20 g design. Two airframes - good thing as they broke one.
Now if you want to design at 1.4g for limit load, fine with me, but I suspect you will find it flimsy in the extreme.
Billski
