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A contrail is a condensation trail caused by an aircraft.
Contrail or Contrails may also refer to:
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In physics, a vapor or vapour is a substance in the gas phase at a temperature lower than its critical temperature, which means that the vapor can be condensed to a liquid by increasing the pressure on it without reducing the temperature. A vapor is different from an aerosol. An aerosol is a suspension of tiny particles of liquid, solid, or both within a gas.
Contrails or vapour trails are line-shaped clouds produced by aircraft engine exhaust or changes in air pressure, typically at aircraft cruising altitudes several miles above the Earth's surface. Contrails are composed primarily of water, in the form of ice crystals. The combination of water vapor in aircraft engine exhaust and the low ambient temperatures that exist at high altitudes allows the formation of the trails. Impurities in the engine exhaust from the fuel, including sulfur compounds provide some of the particles that can serve as sites for water droplet growth in the exhaust and, if water droplets form, they might freeze to form ice particles that compose a contrail. Their formation can also be triggered by changes in air pressure in wingtip vortices or in the air over the entire wing surface. Contrails, and other clouds directly resulting from human activity, are collectively named homogenitus.
Aurora was a rumored mid-1980s American reconnaissance aircraft. There is no substantial evidence that it was ever built or flown and it has been termed a myth.
A cloud chamber, also known as a Wilson cloud chamber, is a particle detector used for visualizing the passage of ionizing radiation.
The chemtrail conspiracy theory posits the erroneous belief that long-lasting condensation trails are "chemtrails" consisting of chemical or biological agents left in the sky by high-flying aircraft, sprayed for nefarious purposes undisclosed to the general public. Believers in this conspiracy theory say that while normal contrails dissipate relatively quickly, contrails that linger must contain additional substances. Those who subscribe to the theory speculate that the purpose of the chemical release may be solar radiation management, weather modification, psychological manipulation, human population control, or biological or chemical warfare, and that the trails are causing respiratory illnesses and other health problems.
Wingtip vortices are circular patterns of rotating air left behind a wing as it generates lift. One wingtip vortex trails from the tip of each wing. Wingtip vortices are sometimes named trailing or lift-induced vortices because they also occur at points other than at the wing tips. Indeed, vorticity is trailed at any point on the wing where the lift varies span-wise ; it eventually rolls up into large vortices near the wingtip, at the edge of flap devices, or at other abrupt changes in wing planform.
A trail is a route for travel.
The jet stream is a fast-moving high-altitude wind phenomenon.
A jetstream is a machine that creates a waterstream in a swimming pool, which can be used for exercise, entertainment or massage
In aerodynamics, the Crow instability, or V.C.I. vortex crow instability, is an inviscid line-vortex instability, named after its discoverer S. C. Crow. The Crow instability is most commonly observed in the skies behind large aircraft such as the Boeing 747. It occurs when the wingtip vortices interact with contrails from the engines, producing visible distortions in the shape of the contrail.
The environmental impact of aviation occurs because aircraft engines emit heat, noise, particulates and gases which contribute to climate change and global dimming. Airplanes emit particles and gases such as carbon dioxide, water vapor, hydrocarbons, carbon monoxide, nitrogen oxides, sulfur oxides, lead, and black carbon which interact among themselves and with the atmosphere.
A vapor trail, or contrail, is a condensation trail made by the exhaust of an aircraft engine.
Contrails is a small handbook issued to new cadets entering the United States Air Force Academy. It contains information on United States Air Force and United States military history; Academy history; notable Academy graduates; aircraft, satellites, and munitions in the current U.S. Air Force inventory; transcripts of important national documents such as the Preamble to the Constitution and the full national anthem; and famous quotes, which are usually patriotic or leadership-related. Cadets in their fourth class (freshman) year are expected to learn most of the information from Contrails, and be able to recite much of it verbatim. Contrails has traditionally been published in the class color—Blue, Silver, Red, or Gold—of the freshman class.
Best Evidence is a 2007-present documentary television series on the Discovery Channel and Discovery Times channel.
Contrail was a Japanese video game production company best known for their work on Legend of Legaia and Wild Arms 2.
Aviation affects the environment due to aircraft engines emitting noise, particulates, and gases which contribute to climate change and global dimming. Despite emission reductions from automobiles and more fuel-efficient turbofan and turboprop engines, the rapid growth of air travel in recent years contributes to an increase in total pollution attributable to aviation. In the EU, greenhouse gas emissions from aviation increased by 87% between 1990 and 2006.
Feel is the eleventh studio and second Bilingual (English–Japanese) album by Japanese recording artist Namie Amuro. It serves as the singer's first record with Dimension Point—a sub-label through Avex Trax—on July 10, 2013 in three physical formats, and for digital consumption. The album was primarily handled by Western producers, such as Zedd, Dsign Music, Anthony Maniscalco, Steven Lee, amongst others. Stylistically, Feel encompasses a wide range of mid-to-uptempo electronic dance styles including electropop, house, and contemporary dance music, and focuses on themes of love, having fun, and empowerment.
Contrail was a cloud federation computing project that ran from 1 October 2010 until 31 January 2014. Contrail produced open-source cloud stack software including Security, PaaS components, Distributed file system, Application Lifecycle management middleware, and SLA Management. Contrail supports OVF standard and runs on OpenStack and OpenNebula. Contrail software is a full IaaS + PaaS Cloud stack ready to implement Cloud Federations.
A homogenitus, anthropogenic or artificial cloud, is a cloud induced by human activity. Although generally clouds covering the sky have only a natural origin, from the beginning of the Industrial Revolution, the use of fossil fuels and water vapor and other gases emitted by nuclear, thermal and geothermal power plants yield significant alterations of the local weather conditions. These new atmospheric conditions can thus enhance cloud formation.
"Contrail" is a song by Japanese recording artist Namie Amuro, taken from her eleventh studio and second Japanese–English bilingual album Feel (2013). The singer was approached by the Tokyo Broadcasting System team to record the official theme song for their television series Flying Public Relations Office, which resulted into the process of "Contrail". The track was written, composed, arranged and produced entirely by long-time collaborator Nao'ymt, and recorded at Daimonion Studios in Shibuya, Tokyo. Musically, "Contrail" is a dance number that includes instrumentation of synthesizers, keyboards and a drum machine. A self-empowerment anthem, the title derives from the literal term, and is delivered as a metaphor for confidence and hope.