Contrails are not smoke but rather millions of tiny ice crystals formed when hot, moist jet engine exhaust freezes instantly upon contact with the extremely cold air at high altitudes (around 30,000 feet, where temperatures can reach -40°C). The duration of contrails can predict weather conditions: short contrails that disappear quickly indicate dry air and clear skies ahead, while long contrails that persist suggest high humidity and approaching rain.
Deep Dive
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Deep Dive
You’ve Seen Contrails Wrong This Whole Time #aviation #airplane #contrailsAdded:
Ever looked up and noticed white [music] lines stretched across the sky?
That's not smoke.
And what it actually is will surprise you.
Jet engines burn fuel at extremely high temperatures. That creates hot, wet exhaust.
But up at 30,000 ft, the air is freezing cold, sometimes minus 40°.
The moment that hot exhaust hits the cold air, the moisture freezes instantly.
Those white lines? Millions of tiny ice crystals.
Not smoke, not chemicals, just ice.
Here's the wild part.
Contrails can actually [music] predict the weather.
Short ones that disappear fast?
Dry air, clear skies ahead.
Long ones that stick around?
Humidity is [music] high.
Rain is coming.
Follow for more aviation facts you probably [music] never knew.
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