identify a contrail

jogdish

Seen a contrail today around 12:30 over Galway, it had regularly spaced 'smoke rings' any ideas what this may be? Never seen a trail like that before.

JCX BXC

jogdish wrote: »

Seen a contrail today around 12:30 over Galway, it had regularly spaced 'smoke rings' any ideas what this may be? Never seen a trail like that before.

Air has different amount of moisture in different places, so as a contail fades, it will fade faster in the areas with little moisture.

Storm 10

Never saw so many jets over Galway for the past week it's non stop

JCX BXC

Storm 10 wrote: »

Never saw so many jets over Galway for the past week it's non stop

That'll keep increasing until June.

Alaba320

Storm 10 wrote: »

Never saw so many jets over Galway for the past week it's non stop

It's probably just because there are no clouds blocking your view this week

Stinicker

Carnacalla wrote: »

That'll keep increasing until June.

What's happening in June

JCX BXC

Stinicker wrote: »

What's happening in June

The peak summer season?
Seasonal flights are restarting, especially in may. Most will be restarting in may.

Youngblood.III

I seen a strange one, there was a darker contrail all the way over the horizon, but it was in front of the plane, normal white contrail was out the rear as usual.... any ideas?

protog777

Stinicker wrote: »

What's happening in June

It's the peak of transatlantic flights because of holiday goers in summer, I presume.

JCX BXC

Youngblood.III wrote: »

I seen a strange one, there was a darker contrail all the way over the horizon, but it was in front of the plane, normal white contrail was out the rear as usual.... any ideas?

Often happens at twilight. The contails away frombthe the horizon will appear very dark even looking like dark smoke. Interesting enough, it must be to do with the angle of light.

10-10-20

jogdish wrote: »

Seen a contrail today around 12:30 over Galway, it had regularly spaced 'smoke rings' any ideas what this may be? Never seen a trail like that before.

Tis all explained here:
http://www.abovetopsecret.com/forum/thread282867/pg1

But no, I have noticed the same. I'm thinking that it's to do with the laminar flow of air over the wing, it's all pretty linear but I figure that eddies form at vortexes at regular intervals.
So that's my theory and it stands until proven otherwise.

Youngblood.III

Carnacalla wrote: »

Often happens at twilight. The contails away frombthe the horizon will appear very dark even looking like dark smoke. Interesting enough, it must be to do with the angle of light.

11.30 am, it was like a shadow alright, never seen anything like it before.

Youngblood.III

jogdish wrote: »

Seen a contrail today around 12:30 over Galway, it had regularly spaced 'smoke rings' any ideas what this may be? Never seen a trail like that before.

Magnetic pulse drive..... :-)

arubex

Youngblood.III wrote: »

11.30 am, it was like a shadow alright, never seen anything like it before.

If the Sun was behind the aircraft, it can cast a shadow of the contrail forward onto a thin cirrus layer.

In this example the underlying cloud was quite thick but sometimes it is so thin as to be invisible.

Youngblood.III

arubex wrote: »

If the Sun was behind the aircraft, it can cast a shadow of the contrail forward onto a thin cirrus layer.

In this example the underlying cloud was quite thick but sometimes it is so thin as to be invisible.

Very like that, but the sun was nearly at noon, plane was directly above me, heading westerly, shadow contrail was all the way to the horizon, westwards.

Chuck Aaron

A good friend of mine, let's just call him "Ducktales"...Lives breathes sleeps and anything else you can think of....Contrails.

I worry about the chap.