Posted by jclarkbaker on 9/27/2012 12:39:00 PM (view original):
Posted by gregos on 9/27/2012 7:15:00 AM (view original):Perhaps you are unaware of the definition of the word "essential".
Posted by jclarkbaker on 9/25/2012 4:42:00 PM (view original):Actually I was unaware of that. So too, apparently, was Boeing.
Just like a good Dem. You always have to tell everyone else what your boy is talking about, so now you presume to tell us what Mitt is talking about.
Oh, and you do realize that they only have to pressurize for certain altitudes, right? You're aware of that, right? It is only essential over 10,000 ft. You know that right? Because it appears that from your initial post you were unaware of that. So, do you want me to tell everyone what I think you meant by that first post? Do you?
But yes, keep up with your distraction that Mitt doesn't understand aircraft pressurization.
"Research by the National Academy of Sciences has concluded that these cabin altitudes (5400 feet) are safe for healthy individuals, and because pressure changes in aircraft cabins are very gradual, most travelers do not suffer adverse effects.
However, if you suffer from an obstructive pulmonary disease, an upper respiratory or sinus infection, or certain cardiovascular conditions, there could be some risk at these cabin altitudes."
" In some individuals, particularly those with heart or lung disease, symptoms (of hypoxia) may begin as low as 5,000 feet (1,500 m), although most passengers can tolerate altitudes of 8,000 feet (2,400 m) without ill effect. At this altitude, there is about 25% less oxygen than there is at sea level."
Keep on making up those "facts", and then trying to make people look dumb for not knowing them.
Hey, did you know that the penguin is the fastest land mammal? Did you? You're aware of that, right? You know that right? Because it appears that from your initial post you were unaware of that.
But regardless, what are you suggesting? That planes should be designed so that windows open up to 10,000 feet, but then lock down once that magic altitude is reached? Sounds safe to me.
What am I suggesting? Perhaps you should read the previous emails. You know, the ones written by the guy who is claiming someone else doesn't know how planes work. And no, I am not suggesting what you claim I was suggesting. But, again, it's just easier to not address an actual argument, and instead construct a strawman.
Actually I agree: we do seem to have different definitions of "essential".
At 9000ft, the standard barometric pressure is 74 kPa (554 mmHg). This means that there is 73% of the oxygen available at sea level.
The AIM (Aeronautical Information Manual) recommends supplemental O2 above 10,000 feet during the day and above 5,000 feet during the night (when breathing slows).
I still don't see how you can defend a claim about windows on planes not opening. Even if
he meant while on the ground (which based on the context is a stretch), having the option to open windows creates a whole new set of problems for when you're in the air.
So what exactly was your point about pressurization not being essential below 10,000 feet? How is that relevant?