aerodynamic contrails

  1. Mick West

    Four Engines, Flying West over Sacramento

    at 12:16PM PST (20:16 UTC) looking west from Shingle Springs. Did not show up on FR24 or Planefinder. Interesting visually asymmetric aerodynamic contrail - but I suspect that's just the angle, with a center portion lower than the outer trails. Very annoyed I did not catch it ten minutes...
  2. Mick West

    Close Up Videos of Contrails Forming And Evolving

    Source: This thread is for posting close-up videos of contrails forming and evolving. It's just a general collection to help people who are interested look at exactly what is going on. It's also useful to have some high definition close-ups of...
  3. Mick West

    Persistent Aerodynamic Contrail Forming @28,500 on 787

    Oct 7, 6:07 PM PDT, (Oct 8 01:07 AM UTC) Matches Virgin 20: I'm a little confused by the livery though. It looked blue, but it seems like it's just dark red. Kind of an optical illusion. Here's a contrast enhanced shot from the video. Video! One reason I got my Nikon P900 was to take...
  4. Mick West

    Debunked: Irrefutable Film Footage Of Climate Engineering Aerosol Spraying [Aerodynamic Contrails]

    In a recently published paper, atmospheric scientists specializing in contrails were asked what caused various photographed phenomena that "chemtrail" believers frequently identified as evidence of a secret large scale atmospheric spraying program. They unanimously identified the photos as...
  5. Mick West

    Giant Dark Persistent Aerodynamic Contrail

    This morning a large aerodynamic contrail formed near Shingle Springs, California. The contrail formed partially in a cloud layer, and with the low sun it created a significant dark shadow on one side, and maybe something of a distrail. The above photo also shows a younger contrail to the right...
  6. Trailspotter

    Alternating hybrid contrails

    Better late than never. I've just stumble upon an eight month old thread describing the most unusual contrail: oly720man From United Kingdom Posted Wed May 13 2015 22:49:12 BST While waiting for the bus home tonight BA269, an A380, flew over the centre of Manchester. As it...
  7. Mick West

    An unusual persistent aerodynamic contrail

    This just flew over my house: It's UAL 788, a 757-222 from San Fancisco, at around 25,000 (in the first photo) to 27,000 feet (overhead). The photos are mostly rotated 90 degrees, as most of the time it appeared to by flying vertical (as it was heading straight for me). It's interesting...
  8. Mick West

    A Rainbow Aerodynamic Contrail

    via email from Ron Smith In the UK. I live in Henstridge, Somerset, UK and the aircraft was about 1 mile south of me, tracking east west. Taken 18 July 2015 ~1300 local showing a BA Boeing 777-300. It was just beginning to pass above a cloud layer when the aerodynamic pressure field around the...
  9. skephu

    Aerodynamic Contrails that look like Exhaust Contrails

    But aerodynamic contrails look in fact quite similar to exhaust contrails themselves: The part close to the wing is different, but then the turbulent region after about 50 m is hard to distinguish from an exhaust contrail. And I don't see why it couldn't form pendules. Skywriting smoke forms...
  10. Trailblazer

    Excellent video of vortices and aerodynamic contrails

    Hope this is OK to post here - it's quite a new video and one I hadn't seen before - a really good compilation of low-altitude vortices and aerodynamic contrails on take-off and landing. Look at 5:12 for a nice propeller contrail from a Flybe Dash 8 :)