Relax guys...it's ALL good...you'll feel just fine...breath deep.
Relax guys...it's ALL good...you'll feel just fine...breath deep.
UNITED STATES ARMY AVIATION
Above the Best
Why the Hell should I have to press “1” for ENGLISH?
Damn, can't believe this thread is still even going. Hey Sertes, just ate a huge beef & bean burrito, come stick your head by my ass, and I'll show you some real chemtrails....
actually, i did wonder if the contrails affected the tempature. over SLO, somedays they are our only clouds and this area is a major "overpass"
I'm investing in this thing they call an 'Iron Horse'.
UNITED STATES ARMY AVIATION
Above the Best
Why the Hell should I have to press “1” for ENGLISH?
We are unable to provide a full explanation of the total collapse - NIST
I got to the PEOC and the vice president was already there - US Minister of Transportation Norman Mineta
Your site lists temperatures in °F which is natural in the U.S.
I am from Italy and ALWAYS forget to add °C to temperatures I wrote.
Sorry.
But facts remain: contrails need a very low temperature to form, which at 10.000 meters and 70% humidity is -40°C or less. It's a phisical effect, the data is from FAA.
We are unable to provide a full explanation of the total collapse - NIST
I got to the PEOC and the vice president was already there - US Minister of Transportation Norman Mineta
“You know the world is going crazy when the best rapper is a white guy, the best golfer is a black guy, the tallest guy in the NBA is Chinese, the Swiss hold the America's Cup, France is accusing the U.S. of arrogance, Germany doesn't want to go to war, and the three most powerful men in America are named "Bush", "Dick", and "Colin." Need I say more?” - Chris Rock
I'm sure this will convince him, NOT:
http://www.allstar.fiu.edu/AERO/fltenv5.htm
Flight Environment
HUMIDITY, TEMPERATURE, and STABILITY
baj2_ln.gif (315 bytes)
....
VAPOUR TRAILS (CONTRAILS)
The white vapor or condensation trails (contrails) you see high up in the blue in this age of jet airplanes owe their origin to two different causes.
1. EXHAUST TRAILS. When the hydrogen and carbon in aviation fuel are burned, the carbon produces a colorless gas and the hydrogen produces water vapor, both of which are invisible. The latter product of the combustion process, which comes out of the exhaust, will remain invisible as long as the humidity of the surrounding air has not reached its saturation point. As stated in the section above, warm air can contain much more invisible water vapor than can cold air before it becomes saturated. In the extreme low temperatures encountered at very high altitudes, the cold air is incapable of absorbing the excess water vapor coming out of the exhaust. The water vapor therefore condenses into a visible cloud of water droplets or ice crystals. This is known as an exhaust trail.
2. WING TIP TRAILS. As we learned in Theory of Flight (Drag), vortices, in the form of eddies rotating with a corkscrew motion, are formed off the tips of an airplane wing in flight. These rapidly rotating vortices have considerable centrifugal force acting outwards, which causes a rarefaction and therefore an expansion of the air in the middle of the vortex. Air, which expands, cools. If the vortex is strong enough and the humidity of the air high enough, this cooling will cause condensation. The white cloud-like trails which form off the wing tips are known as wing' tip trails.
Sertes - Check out this exotic weapon!
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