"Might be entertaining to test these aircraft in 60 below weather."
All sorts of surpising things gum up or even shatter at those temps. But, that's some pretty dense air, lol, so aerodynamic lift shouldn't be a problem. The other component of lift, helium, could be adversely affected, but I honestly can't say whether that would or would not be the case.
Helium is a very scarce element. It is found in only a few places, often as a biproduct of natural gas.
Among things that we are likely to run out of sooner, rather than later, helium is right at the front of the list.
Helium is a very scarce element. It is found in only a few places, often as a biproduct of natural gas.
Among things that we are likely to run out of sooner, rather than later, helium is right at the front of the list.
Don't know if it's dense, but it is shallow. Sea level is the same pressure. In the summer the ravens fly a mile up on a thermal, but in winter they rarely get over 200 feet up. A hard landing by one of those membranes might be more interesting than a mere sprung airframe.