James, I was using 10 stories just for example, I do realize now that is a pretty low height. I figured that small helis like the picooz would only go 150-200 ft high because of mechanical limitations.
Rafael, I was mainly interested in small electric helis. Excluding the limitations of equipment, wind force and the logistics of being there to see and control the heli, if you could somehow lock the heli to fly at max power till it hits it's service ceiling, what is the max height it could reach?
Hi, I used to fly real helis and have taken one to 10,000 feet - it flew fine, but we couldn't go any higher without oxygen masks.. (legally)
I fly TREX 450 clone helis and I think they would have NOproblem at all flying at 10,000 feet or even higher..
Here is my most powerful heli.. it has tons of power...
At 18,000 feet the atmopshere has half the densitiy of sea level, but I think this heli would still climb easily at that height...
You do strike some other interesting aerodynamics at high altitudes but its all on google if you are interested...