Aircraft. What Is The Vapor Trail About With Jet Aircraft?
Aircraft. We Were Watching Some Aircraft Fly Overhead, At A High Altitude And Discussing Why We Thought That Some Left A Vapor Trail And Others Didn't
Aircraft : What Is The Vapor Trail About With Jet Aircraft
We were watching some aircraft fly overhead, at a high altitude and discussing why we thought that some left a vapor trail and others didn't. Is anyone able to shed light on the exact reasons behind the vapor trail that is sometimes seen with jet aircraft. ~~~ the man ~~~
Best Answer To Aircraft Question
Most of the above answers are marginally correct as to what causes these. It is water vapor or water vapor converted to ice crystals. Contrails are only created from the engines (usually turbine but yes WWII bombers flew so high their engines did this as well). It happens. The process happens when the engine exhaust increases the water content in the air past the saturation point (pretty easy at high altitude). This turns to ice crystals at such low temperatures that is why the really high ones tend to stick around a long time and sometimes catalyze a cloud. Why some do and some don't? A bunch of reasons: - Different altitude (hard to judge when you are on the ground). - Different exhaust temperatures - High by-pass or low by-pass engine (low by-pass will create larger/longer contrails)
All Answers To Aircraft Questions
Answer 1It has to do with the heat of the engine running through the cold air condensing water vapor. Not the contrail stories that the wackos are talking about. They think that someone is spraying us with some sort of chemicals. Nuts huh?
Answer 2Hypersonic flatulence
Answer 3Some say its extremely hot turbine engine exhaust contacting the very cold (-50SAT) air at high altitudes which, they say, causes lines (trails) of condensation. Others say these are signals to the alien "Greys" who live undergound. Both could be true, don't you think?
Answer 4super heated air is what causes a vapour trail or rather the water content of the air. effectively some aircrafts run at higher tempratures than other hence why some and not the others, bare in mind other factors like air conditions and day temprature etc
Answer 5Water and CO2 are the two main products of combustion. When the hot water vapor is cooled in the air at altitude, it condenses, like a cloud, because the air at the lower temp is saturated. There is further discussion here: if you use your 'google fu' and search "vapor ;
Answer 6Most of the above answers are marginally correct as to what causes these. It is water vapor or water vapor converted to ice crystals. Contrails are only created from the engines (usually turbine but yes WWII bombers flew so high their engines did this as well). It happens. The process happens when the engine exhaust increases the water content in the air past the saturation point (pretty easy at high altitude). This turns to ice crystals at such low temperatures that is why the really high ones tend to stick around a long time and sometimes catalyze a cloud. Why some do and some don't? A bunch of reasons: - Different altitude (hard to judge when you are on the ground). - Different exhaust temperatures - High by-pass or low by-pass engine (low by-pass will create larger/longer contrails)
Answer 7water is a byproduct of all petroleum fuel combustion, just look at all the vapor coming out of your exhaust after you start your car. at high altitude, the water vapor in the jet exhaust forms ice crystals almost immediately, because at 35,000+ feet it's about -60 degrees up there. for all you chemtrail freaks out there, don't forget to wear your tinfoil hats when you go outside
Answer 8Vapour trails (contrails) are formed when the water content of the exhaust gases freezes in the air. This happens above the 'mintra' level, a height at which water converts to ice crystals. Watching from the ground your height perception may not have been accurate. So when the planes were passing by, some may have been below the mintra level, hence no contrails.
Answer 9The vapor trail behind the aircraft is known as a contrail. It is when the exhaust from engines mixes with the colder air in the atmosphere and causes a cloud like trail.
Answer 10when a aeroplane is traveling high in the sky the higher they go the colder it get, so what you get is hot gases been cooled down which are show as vapor trails It is like steam comming from a kettle
Answer 11It is water vapor.
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