What are those planes that we barely can see and leave really big trails of errmm clouds behind them?
My mother told me that they are metereology planes but I can't find any pictures or information about them.
Could anyone give me more information about them? :)
A website with pictures would be great!! :) Thank you.
Mauro
Answers:
I'm with Rob S ... normal planes, flying high to save fuel as the air is thinner up there. The vapour trail is left because the air is below freezing at that altitude and the engines on the plane are hot, causing the vapour trail.
they are jet planes or jumbo jets. they fly at those high altitude to avoid disturbances.
What you see are normal planes.. just they are flying high.going far places.
Since they are flying so high when the burn out fuel the give out water vapours which form something like a trail of cloud.
# I'm leaving on a jet plane, don't know when I'll be back again. #
They are made by normal jet planes. They fly at such high altitude because the air is thinner and creates less drag when they fly, saving Fuel,The engines are designed to work most efficiently at this height. They also avoid a lot of the turbulence that is lower down.
aliens i think.
They're just your average jumbo jets and charter planes, and it's not smoke that's being left behind, it's ice. The air is so cold up there that it freezes the water in the plane's emmissions.
Commercial, private, and military jets cruise at altitudes up around 30,000 - 36,000 feet above the ground. That's about six miles away. That's why they appear so small.
The clouds behind the jets are called contrails and they are the jet engine exhaust condensation.
Well, today those are jet planes, althought a propeller driven airplane will also leave what are called contrails. Contrails are condensation trails (sometimes vapour trails): artificial cirrus clouds made by the exhaust of aircraft engines or wingtip vortices which precipitate a stream of tiny ice crystals in moist, frigid upper air. Contrary to appearances, they are not air pollution as such, though might be considered visual pollution.
An aircraft engine's exhaust increases the amount of moisture in the air, which can push the water content of the air past saturation point. This causes condensation to occur, and the contrail to form.
Aviation fuel such as petrol/gasoline (piston engines) or paraffin/kerosene (jet engines) consists primarily of hydrocarbons. When the fuel is burned, the carbon combines with oxygen to form carbon dioxide; the hydrogen also combines with oxygen to form water, which emerges as steam in the exhaust. For every gallon of fuel burned, approximately one gallon of water is produced, in addition to the water already present as humidity in the air used to burn the fuel. At high altitudes this steam emerges into a cold environment, (as altitude increases, the atmospheric temperature drops) which lowers the temperature of the steam until it condenses into tiny water droplets and/or desublimates into ice. These millions of tiny water droplets and/or ice crystals form the contrails. The temperature drop (and therefore, time and distance) the steam needs to condense accounts for the contrail forming some way behind the aircraft's engines. The majority of the cloud content comes from water trapped in the surrounding air. At high altitudes, supercooled water vapour requires a trigger to encourage desublimation. The exhaust particles in the aircraft's exhaust act as this trigger, causing the trapped vapor to rapidly turn to ice crystals. Contrails will only occur when the outside air temperature around the aircraft is at or below -57 degrees Celsius.
Normal aircraft flying at high altitude,they don't have to be jet aircraft,either,piston engines leave the leave the same smoke!trails,witch is actually a vapour trail(h2o) caused by the fuel burning .Some engines actually have water injected into the fuel mix to make them more efficient too.
It is as the previous answers have stated the water vapour from the high flying jumbos but if you fancy a bit of paranoia and conspiracy do some searches for 'chem-trails' for a few theories that these trail are ways of the government secretly testing chemicals on the unsuspecting public.
The truth is out there. .i think.
B-52 they fly long and high missions
Ordinary, everyday planes flying at high altitude which causes a vapour trail (frozen exhaust and moisture).
There commercial jets flying long haul and are above 25,000 thats wen the trail starts.
They're just every day commercial airliners that are leaving jet streams behind them!! The bigger the aircraft (ie the bigger the wings) the bigger the jet stream!!
They are normal jet aircraft, ie. airliners, etc. These aircraft fly around 36,000 feet, so that is why they look so small to you. The clouds that you see are known as contrails. This happens with the hot jet exhaust mixes with the cold air at high altitudes.
Here is a link to a pretty cool picture showing the contrails!
http://www.airliners.net/open.file/10009.
Those white trails you see are vapour trails formed behind the engines of the aircraft that are flying at very high altitudes.
High flight levels are not reserved to just aircraft that are flown for meterorlogical purposes. The most common ones you see, are normal Commercial passenger & cargo flights. Military flights are at levels even higher than that, but it would be only on rare occasions that you would see one of those.
For a website that would be of interest to you, try this one. www.eaa.org
mauro, any plane can do that, as long as they are flying at their designated cruising altitude, since the engines are hot and the air up there is cold, it will produce that trail that you see in the sky when they fly, is like when you breath in a really cold day and you see that cloud that comes out of your nose or mouth
they are areo planes,the stuff coming out the back is nuclear waste they usually dump it up north where there is nothing important to harm.
they are vapour trails formed when the heat from the engines meets the very cold air at very high attitude
I don't think they are any kind of special planes. They are just typical high flying commercial airliners. They are flying higher because of the efficiency of the engines in cruise. This translates to better fuel burn and lower cost for the fuel. This further translates to more profits for the carrier.
But what you see is the vapor from the unburned fuel in the jet's exhaust. It forms when you fly at high cold altitudes.
They are noramal commercial airliners athigh alitude and the "smoke" is called "contrails" you probably saw a Boeing 777 or an A340 depending on how many trails there were. was it two or four ?
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