Why Do Aircraft Leave Lines In The Sky?
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- Опубликовано: 18 дек 2021
- Soaring ten or more kilometers above you, high-flying jets can be hard to spot on their own. However, the white lines they leave in their wake, known as contrails, often give away the aircraft’s presence. But why do aircraft leave these lines in the sky?
Article link: simpleflying.com/aircraft-con...
A special thank you to RUclipsr and Planespotter LEJ.approach for capturing some great contrail scenes. More of his videos can be seen here: / dvldi
Video sources:
787 • Contrail Spotting: Boe...
777 • Contrail Spotting: Air...
747-400F • Contrail Spotting: Air...
747 and A319 • Contrail Spotting: Boe...
A380 • Contrail Spotting: Luf...
777 • Contrail Spotting: Emi...
A380 Qantas Air to Air • QANTAS A380 in cruise ...
747 British Airways Air to Air • High Altitude flyby B...
787 Etihad • Boeing 787 - Air to Ai...
787-9 Air France Air to Air • Le Boeing 787 Dreamlin...
Lisbon Airport Timelapse • Lisbon Airport RW21 Ti...
Photo sources:
www.flickr.com/photos/francoi...
commons.wikimedia.org/wiki/Fi...
commons.wikimedia.org/wiki/Fi...
p0.pxfuel.com/preview/890/306...
www.flickr.com/photos/lonetow...
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That was a pretty decent video explaining contrails. It's amazing to see the number of people who know nothing about them and are susceptible to believing conspiracy theories about "chemtrails." Even armed with a degree in aeronautical engineering and almost 40 years of flying jet aircraft, I've found that I am almost totally unable to reason with any of those chemtrail believers. It makes me fear for our country that people can be so cocksure about something they no absolutely nothing about. Let's face it -- we're ALL ignorant about different things -- but for large numbers of people to have no appreciation that their knowledge is pretty much limited to their own experience is a scary thing.
How many jabs are you up to?
5? 6? 8?
Where I live in Arizona when the conditions are just right, I sometimes can watch the progress (because of the contrails) of a single airliner for upwards of 20-minutes. One time I was able to track a single plane, from far northwest of Phoenix (I estimate over Wickenburg) southeast towards Tuscon and beyond. That was well beyond 200-miles that I could see one plane. Pretty neat! I am a contrail fan.
If the plane is approaching from due north or east over the valley, they look like they’re going vertical
@@cranklabexplosion-labcentr8245 Yes, I've seen that many times. It's kind of a trip!
As a former Naval Aviator, I always enjoyed seeing contrails. As a child, I would see significant amounts of contrails over the Albuquerque, New Mexico sky’s, and wonder where people were heading.
Why do so many Navy guys come from land-locked states?
I no longer wonder where people are heading, i just use flight radar 24 😂
Grew up there so cool
Woah! What did you fly?
@@2ksnakenoodles - A-6E / KA-6D
I remember flying over Texas, I was in the last row on a 747 and the contrail was forming right next to my window. It was great to see it so close.
What i don't fully understand is why do some contrails appear to get bigger over the course of a few hours? Sometimes i will watch these go from the approximate wingspan of the aircraft to what must be almost a half mile wide or more!
Love the 747 and A380 contrails
Oh yeah? Well I love you
I like the B-52 contrails
It isn't just the jets, watch videos of the battle of Brittan and the sky is covered with contrails created by the fighters. One day in about 1950 a B-17 flew over our school and he was cutting contrails behind each engine. Our teacher, who flew in WWII, explained what those white trails were.
I remember learning what these were long ago, I had since forgotten so it's nice to be reminded!
Good stuff. It may seem simple but things like contrails are mysterious to some so an informative vid is helpful.
As a child I remember hearing speculation that contrails were made during weather measurements.
Those were the days before Google though.
This is one of the questions my family asks me all the time and I havn’t found the answer till now
In the 80s, I was an undergrad at Wa. St. Univ. On clear spring days, SR-71 contrails crossed the blue sky from north to south. Only a SR-71 moved that fast and that high up. Sometimes, a sonic boom could be heard. I miss those days.
Short answer: To poison the water supply
I'm kidding
Phew, ive been worried about, noone would make a joke of it^^
Aircraft leave contrails to mess up period movies.
I love contrails. I love using Flightaware to see where the planes are coming from and going to. Lots of planes fly over where I live, in Saskatchewan, Canada.
It's fun, on a cold Canadian winter day, to follow contrails as aircraft approach YYZ. The trajectory gives a clue to the flight path and, so, the origin.
I enjoyed too seeing contrails by planes flying at high altitude from above the skies of Indonesia
A couple of years ago, I was in the backmost seats on a B777. I could actively watch the contrails form right outside my window from the engine. It's incredible how safe and informational commercial flight is. Science is cool.
Contrails 🧐
I enjoy seeing contrails and snapping photos of them
The Fokker F130 NG will not leave any stripes because it's fully electric and leaves no pollution. It is needless to say that this is a revolutionary plane that will change aviation as we know it.
The commentator implies that only jet engines produce contrails. But the fact is that piston-engined aircraft at high altitude do as well. If you look at footage shot during WW2 shown in documentaries and movies like 12 'O Clock High and Memphis Belle, you will see USAAF B-17 and B-24 heavy bombers flying at 20,000+ feet making contrails. And during the Battle of Britain people on the ground witnessed the contrails from high altitude dogfights.
Well there are certainly no shortages of contrails out here in the desert on interstate 10! The traffic coming out of LAX looks fairly normal, with anywhere between eight and 12 contrail patterns, with 6 to 8Visible airliners, at any given time during daylight hours
I was wondering how this effect occurs. Precised at right time.
I was on a flight one early morning and I was looking at the ground out the window and I could see a shadow on the ground and then I realized it was our plane creating that linear shadow.
I feel like air reacted after a rough compression of the engine.
This is 21st century.
Thanks for sharing
No,good vid!
....ah ha! Got it. Good stuff, thx!
In the FMC there's a performance setting for 'contrails' - you just click that bad boy and voila!
I explained what caused contrails coming from aircraft to a neighbours daughter, and shared that it was a way of working out how many engines the aircraft had. I still haven't seen six contrails over Wakefield from Antonov AN 225!
I thought it was just because the engine exhaust was hot and the air was way cold up there. Even though I've seen 2 planes on radar and the one that is higher leaves no trail while the lower one does and they are realitively close together
And that exhaust is full of water droplets
Contrails have been in the sky way before the civilian jet age. During WWII B-17’s with supercharger were capable of flying at altitudes where contrails could form out of the exhausts of their radial engines
Not just jets. Piston-engine aircraft also often left what were once called vapour trails. They were a give-away to the position of high flying bombers during WW2, for example.
Living in Sydney Australia. Contrails are not as prevalent as I have seen in other parts of the world. I guess that is what happens when you live at the end of the line.
I didn't know the name , but thought it was cause from hot stream from the engine and cold air
How do the engines not run out of water when forming the contrails?
Because it's water from the environment.
sometimes information is helpful.
What about multi colored contrails by jet aircraft during aeroshows? How do they make those?
Those are smoke trails left by stunt planes, these are done intentionally
@@Daniel-rx1dv how are they coloured?
Yeah, they use a special oil called "smoke oil", who would have thought lol, about the colored smoke I think they just add the pigment to the oil.
@@soumitrakandpal Its a chemical process, i don't know a lot about that but its probably like the dame process they use to make colored smoke bombs, the ones they use on parties on concerts, or even on gender reveal parties
Can non-jet aircraft leave contrails?
Maybe if the atmosphere is very cold at the altitude they fly at.
Yes. There are photos of twisting contrails over London during the Battle of Britain, and USAAF bomber pilots hated leaving contrails over enemy territory because it gave flak gunners a target and also because fighters could sneak up behind the bombers inside the contrail.
Not sure. Seems like helicopters wouldn't because they can't fly that high. Same for cessna's
Fresh new comment !
First and foremost we need a clear sky. To me they seem to pass the time when I get bored. I would rather have sky conjestion than car conjestion.
Idk
I thought that was passenger farts being ejected 🇨🇦👍
Top comments
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O boi here we go
SAKIMA SWITCH - LINE
Vapor-trails
I have no strong feelings one way or the other.
Will this contrails harming the environment?
Well they do produce CO2
@@JayJayAviationCO2 doesn't harm the environment.
any thing that stays up there for hours is not contrails it called g o enjineering i have bin looking a the sky from the 1960 it was never that bad it got real bad when nibiru was here in 2016 a scientist can not tell anyone the truth if you remember how red the clouds were back then for at lest 3 years
conspiracy theorists be like: "this is to control our weather, to plant seeds on us humans and for bioengineering" 😂😂😂
And then they be like: "the government and the elite spends millions of dollars trying to hide this from us".
...so how do they know lol 😂😂
@@eljaibas16 Amazing Comment!!!😭
Chemtrails come from unicorn pee!
And the sheep go baaaaaaaaaaaa. ;)
How about a quiz for everyone? When can you see a "real" chem trail from an aircraft. Why would this happen? Do all commercial aircraft have the ability to produce a chem trail?
“Lines in the sky?” That’s a funny way of putting it lol
Cheers
Why this doesn't happen with passenger planes
It does, what do you mean? Its just water vapor from combustion of hydrocarbons (jet fuel)
Chem trails? According to conspiracy theorist 🙄
mind control, obviously
lol
Im pretty sure many people already know the answer
Plane farts.
So why all of these jet planes that produce contrails has no clear destination , they just fly back and forth until all the sky filled with contrails!! Sometimes there 2 and 3 planes fly simultaneously and fill the sky with these white stripes and then head back to where they came from..
Yes i absolutely love the sight of contrails but,ive heard on several different occasions that when some of the contrails that don't disappear immediately afterwards then those are actually chemtrails and chemtrails come from planes that they use too modifie the and manipulate the weather from what i was told 😲😲😲
4th
I used to think they were a government conspiracy.
They are
1st
Not true is a lie
Is a lie,we know what's going on up there.
So, please, tell us :-).
💀💀💀
You completely neglected to say that contrails contribute to global warming and are a significant problem for aviation’s impact on climate change. This is an issue that green fuels cannot overcome. An issue for a future video?
If I was entrepreneur with trillions of dollars in my pocket, I would invest literally anyone making functional airplanes running without combustion engine so chemtrail believers can shut up.
Chemtrails.
*con
@@reagank.2268 that's boring.
@@mizzyroro ok then, chemtrails it is
@@reagank.2268 🤗
Why liers
You should have used the kiss principal here...keep it simple stupid...i had to replay because it got too complicated too fast, and my attention span became about the same as a goldfishes
Earth is flat
How about silver iodide for cloud ☁️ seeding and HAARP?
So when you exhale in cold temperatures, are you exhaling silver iodide? Because you can clearly see your breath, and the objective of HAARP it's to research the high atmosphere for better radiocomunication.
@@eljaibas16 Environmental Modification Convention
Look it up
@@adeptpeasant6161 You didn't answer my question.
@@eljaibas16 You're questions are self answered when u look up Environmental Modification Convention
@@adeptpeasant6161 I looked it up, it said that you don't exhale silver iodide in cold weather.
No they are chemtrails and holographic 🤣🤣🤣
Aluminum. Barium.
1st