Javibi From , joined Dec 1969, posts, RR:
Reply 9, posted (10 years 6 months 3 weeks 2 days 22 hours ago) and read 1850 times:
Quoting Sean377 (Reply 4): how come the contrails aren't coming out of the engines?
Apart from the typical engine contrails, given the right circumstances, contrails might be generated by aerodynamic causes, in a way quite similar to the condensation over the wings we are used to see in approaches of take off from humid airports:
Aloges From Germany, joined Jan 2006, 9285 posts, RR: 38
Reply 13, posted (10 years 6 months 3 weeks 2 days 19 hours ago) and read 1774 times:
Quoting JAT74L (Reply 6): Also, why does the contrail seem to pass over the top of the tailplanes and not beneath them?
I think it only seems to be that way, as you said. The contrail passes underneath the tailwing, but it can't be seen due to the reflection of the tailwing being brighter than the contrail.* You can actually see a little bit of the contrail below the leading edges of the tailwing, better seen on the portside.
On the trailing edge side, you can see how the shadow cast by the tailwing obscures the contrail, thereby disabling it from breaking the light coming from above and creating that rainbow-ish phenomenon. You can actually see the shadow in its entirety if you take a close look.
Thanks for my new amazing wallpaper, Jeffwell!
* talking about light coming from below here (reflections in the atmosphere)
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