To be an airplane with jet engines? All jet airplanes leave contrails.
Any kind of powered airplane can leave contrails under the proper condition. Rocket planes always leave contrails. Jets usually leave contrails but may not if the atmospheric conditions are not right. Even internal combustion engine planes can leave contrails if they operate at very high altitude and the atmospheric conditions are just right. For more information, check out this link. http://cimss.ssec.wisc.edu/wxwise/class/contrail.html
The fact that jet airplanes' contrails form cirrus clouds suggests that they fly at altitudes where the temperature and humidity are conducive to contrail formation, typically above 20,000 feet. This indicates that jet airplanes generally fly at high altitudes, where the air is colder and less dense, allowing contrails to persist and spread out into cirrus clouds.
Those lines are created by aircraft flying at high altitudes releasing water vapor in the form of contrails, which are frozen water droplets condensing around particles in the exhaust. These contrails are most commonly seen behind jet engines on airplanes.
The streams that jet planes leave in the sky are called contrails. Contrails form when the hot, moist exhaust from the airplane engines mixes with the cold air at high altitudes, causing the water vapor to condense into ice crystals. Contrails can sometimes linger in the sky for a while, creating long white streaks behind the plane.
The contrails are the result of 1200 degree jet exhaust being released into much, much colder ambient air.
Airplane's contrails do not form clouds; they dissipate soon after they are formed.
The white trails left behind jets are known as contrails.
airports
Jet airplanes fly at high altitudes, typically between 30,000 and 40,000 feet. When their exhaust gases mix with cold air at these altitudes, the water vapor in the exhaust condenses and freezes, forming contrails which can then spread out and create cirrus clouds. This indicates that the contrails and cirrus clouds are forming at a high altitude where the air is cold enough for the water vapor to freeze.
No it is the weather that facilitates the production of contrails.
Contrails is a shortening of condensation trails.
First of all, its not smoke. Its Vapor! Since its so cold when you fly at 35,000FT, and the engines are so hot, you get vapor.