It might not be realistic to fly a pressure vessel large enough to simulate the low atmospheric pressure as well as the low gravity. There are probably also saf

It might not be realistic to fly a pressure vessel large enough to simulate the low atmospheric pressure as well as the low gravity. There are probably also safety concerns; the rotors on serious R/C helicopters store enough energy to basically decapitate a human and these are probably somewhere in that neighborhood given the requirement to generate lift in Mars' atmosphere.