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jet-planes-leave-trail-url Trails can be left behind planes in all areas around the globe and not just in the northern hemisphere. Variables include the aircraft and the prevailing conditions at altitude. What is happening is that a combustion byproduct (either of the jet or piston engine), water, is condensing. Maybe even freezing. After all, atmospheric conditions up high usually include very cold air. When we "see our breath" on a cold day, we are seeing the water vapor in our breath cooling and condensing. What is the source of all clouds on earth? Water evaporated from the ocean or land by the sun. Some v. Trails are created when water particles condense and freeze around particles in the air. Though some speculate they are much more sinister.  The air which the plane travels through is rather humid with a large amount of water vapor available to create a trail. Advertisement. Source: NASA. Persistent spreading contrails are similar to non-spreading trails. Though, they spread out over a larger distance because of turbulence or other weather conditions.  Their main composition is pure water. Jet fuel is also highly refined to remove as many contaminants as possible. Inside the engine, a large amount of gas must quickly flow through to the combustion chamber to keep the turbine spinning. The fuel travels through small tubes within the engine at liters per second. Why Planes Leave Trails. When flying at high altitudes, jet engines exhaust extremely hot air and water vapor, among other things. The cold temperatures and low pressures at these altitudes result in the water forming into visible ice crystals. The results are white clouds known as contrails, which is short for condensation trails. The Science Behind Contrails. There are three components necessary for clouds to form in the atmosphere.  Condensation trails behind aircraft are simply clouds. All three components are created, and when conditions are just right, these contrails will appear behind every plane in that part of the sky. Jet engines produce an incredible amount of heat, along with Jet Planes Leave A White Trail Behind Them Because Time water vapor and other combustion exhaust particles like carbon dioxide.
Some planes in the sky leave trails that persist and spread, and other planes, in the same sky, leave short-lived trails, or no trails at all. These trails are actually called contrails, short for “condensation trails”. They are not smoke from the engines, they are formed when the water in jet engine exhaust (and there’s quite a lot of it, like car exhaust on a cold day) mixes with wet cold air and condenses and . Most aircraft that leave trails aren't leaving smoke. It's condensed water vapour; essentially, clouds. These are called www.- can be caused by the water in the engine exhaust condensing, or by the disruption of the air by the passage of the aircraft triggering the .

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