ORIGINAL: wojtek
ORIGINAL: bobber
Miniflyer - are you sure about 20 g at 120 mph and 500 foot radius? Looks like a decimal place slipped.
http://www.rcpro.org/rccalc/GForce.aspx
correct, mistake was made somewhere ... i get right under 2 Gs .... at 200 mph, and 300 foot radius ( that’s some hard flying on a big phantom, and definitely beyond the "scale" flight envelope ) i get just under 10 Gs ..... I can tell you that this F4 will take significantly more based on the way its built ..
Voy
Maybe the batteries are low on his slide rule?
No real offense meant to Henk.
It's just that there is often such a big difference between theory and reality.
Ever seen that old cartoon of the pile of smoking wreckage on the runway, the pilot parachuting down, and the engineer walking away, saying "oh, well, back to the old drawing board!"
With these models, nobody is calculating the control linkages and all the rest. Spar failure is pretty rare. So the only real test that is worthwhile is to put a few models in the air and see what comes up.
By the way, great post from Wojy. Who wrote that for you?