(03-12-2018, 05:16 PM)RiK Wrote: Do you think that the always changing & vastly different temperatures and conditions up there compared to ground level could play any part in the way vapour trails behave at all ? It does influence the way clouds form and appear .
Is does of course, however some of the trails are coming from other aircraft at the same level and some not, many have witnessed this, what do you think this could be due to, after all heat from one type of engine or another is the same heat??
Where do you get the information to determine that the aircraft are at the same flight level ? Even on the same airway there can be a couple of thousand feet difference to keep them out of the wake of a wide bodied plane ahead for instance . If the air ways intersect there has to be some form of separation in altitude too .
(03-13-2018, 12:55 PM)RiK Wrote: Where do you get the information to determine that the aircraft are at the same flight level ? Even on the same airway there can be a couple of thousand feet difference to keep them out of the wake of a wide bodied plane ahead for instance . If the air ways intersect there has to be some form of separation in altitude too .
This is the thing, we will never know how high they really are.
Another thought that passed my vivid imagination is,
Maybe they are burning waste that costs more on the surface to make even more money, I would'nt put it past the greedy corportions to do this.
06-16-2018, 08:14 AM (This post was last modified: 06-16-2018, 05:41 PM by RiK.)
I've seen these videos before. He believes in ,& is trying to connect any programme that the military or government may have had with the contrails left by commercial aircraft which is what he films on suitable days .
The pilot questioned didn't offer any explanation as to where all the gear was fitted to a commercial plane . What was the original source of shot of the guy switching the "CHEMTRAIL GENERATOR" on . Someone fooling about , maybe ?
If you look at the display on the screen top the plane was American Airlines 109 (AAL109), a Boeing 777 (it says so on the console) which is a commercial airliner flying between London Heathrow and Los Angeles a bit of searching shows . All the vital info on that screen was in lower case but in big block caps along the bottom would it really say so obviously "chem trail gen ,,on" and would they actually call it that . There is after all a keypad to enter text manually by the look of it too . Might they have typed it in . then showed the screen with the engines contrailing ?
(08-15-2018, 10:13 AM)timetraveler Wrote: Taken 4 days ago in Yorkshire, UK, the sky was absolutely full of them...
Yes , you realise how much commercial air traffic there is up there under those conditions . Just spent some time in Yorkshire . It's very busy with air traffic . A lot of planes at lower levels approaching and departing l the airports in the North of England , and several high altitude routes used daily intersecting above too , but unless you are looking for them you don't tend to notice them on days when there are no contrails at all . Did you look up any atmospheric data for the altitude those planes were cruising at on that day ?
(08-15-2018, 10:13 AM)timetraveler Wrote: Taken 4 days ago in Yorkshire, UK, the sky was absolutely full of them...
Yes , you realise how much commercial air traffic there is up there under those conditions . Just spent some time in Yorkshire . It's very busy with air traffic . A lot of planes at lower levels approaching and departing l the airports in the North of England , and several high altitude routes used daily intersecting above too , but unless you are looking for them you don't tend to notice them on days when there are no contrails at all . Did you look up any atmospheric data for the altitude those planes were cruising at on that day ?
Hi Rik, no I didn't look up any data, I always intend to but end up being busy with other stuff. Next time I post imagery I will attempt to ascertain the flight and atmospheric data to accompany it
the windy.com site does not seem to have the facility to access archived statistics now, you could have just looked up the maps from the date of the photo until just recently. You will likely find the moisture content of the air at the plane's altitude is 90 - 100% and the dew point and temperature will be similar numbers on days like that . Even during the recent hot weather the temperature between 30 - 40,000ft was 50 below zero and lower .
