An aerodynamic conundrum has struck me:
OK, I'm bored down route and I've bought an RC helicopter to while away the hours until the boss decides he wants to go home. As I fly it over the coffee table and bed in my hotel room there's a marked difference in ground effect.
The strange thing is that as it gets closer to the ceiling it also seems to get more lift there. Is there some sort of "ceiling effect" or am I just cr
p and this is just caused by the same things as table leg effect, chair effect, lamp effect and wall effect?
