Mark T From , joined Dec 1969, posts, RR: Posted (14 years 2 months 3 weeks 2 days 18 hours ago) and read 919 times:
I was sitting behind the wing of a B737-200 the other day and noticed something. The engine was staring me in the face, yet when I looked down at the ground, the view was not at all distorted by the exhaust from the jet. I could see directly through the wake of the jet to the ground below perfectly clearly. That kind of surprised me a bit. Can someone clarify this for me?
COboeing777 From United States of America, joined Feb 2001, 693 posts, RR: 4
Reply 1, posted (14 years 2 months 3 weeks 2 days 14 hours ago) and read 889 times:
are you talking about on the ground or in the air? I assume you mean in the air. The reason is because the plane is moving. Would be the same reason why when you watch planes at cruise altitude with contrails. The trails always start a little bit behind the plane.