potus From United States of America, joined Jan 2012, 15 posts, RR: 0 Posted (1 year 3 months 2 weeks 4 days 11 hours ago) and read 4901 times:
Came across a clip of an C-5B taking off. As the aircraft took off, there was some stuff that came off the left wing. Is that condensation from the wing or something else?? I don't think its condensation.
bikerthai From United States of America, joined Apr 2010, 1591 posts, RR: 4 Reply 6, posted (1 year 3 months 2 weeks 4 days 2 hours ago) and read 4595 times:
Quoting rfields5421 (Reply 4): Looks like a bit of condensation created ice to me. It appears to dissipate most of its mass right as it appears with just a tiny part left as it gets to the aft end of the fuselage.
Can't be ice unless it came out of the cockpit. The flowers tells me it's late spring or early summer.
The sun is over head, so it's not early morning cold/condensation.
My next guess is some gear oil burning up as some actuator is activated or some high pressure bleed system is venting. The plane have just rotated. Is there anything near the wing root that would have been activated?
spudh From Ireland, joined Jul 2009, 274 posts, RR: 1 Reply 9, posted (1 year 3 months 2 weeks 3 days 20 hours ago) and read 4324 times:
Quoting Cadmus (Reply 1): I'm wondering if it's a light shining onto the fuselage - it does look as if it follows the curvature a bit. That said, I'm not sure why a light would be pointed there in broad daylight.
There's a clue at 31 seconds, a strong reflection from the sun off the cockpit window. I reckon its a reflection from another windscreen, watch the way it follows the contours of the plane even underneath the tail ramp
spudh From Ireland, joined Jul 2009, 274 posts, RR: 1 Reply 11, posted (1 year 3 months 2 weeks 3 days 19 hours ago) and read 4277 times:
Quoting bikerthai (Reply 10): But you can see some of the white puff at the end not on the airframe.
bt, i've watched it loads now and to be honest can't see anything resembling a puff after the 'reflection' runs off the tail. There seems to be a second 'reflection' with the same pattern just on the tail ramp after the first one runs off but right now my brain won't let me see it as anything else .
soon7x7 From United States of America, joined May 2006, 2798 posts, RR: 14 Reply 15, posted (1 year 3 months 2 weeks 1 day 14 hours ago) and read 3716 times:
May have been condensation moisture trapped in the lower skin well behind the aft spar. Depending on the fuel load the not all the moisture drains out of the weep holes in the lower wing panels till the aircraft gets under way and gets sucked out. Upon rotation the airflow drawers this moisture out past the flap leading edge. It makes sense if this were a turn around flight or it rained during an overnight stay. That is what I see from the video. I've seen this on take off especially in Fokker 100's from the spoiler well above the wing. Acceleration and pitch angle move the moisture aft into the slipstream and appears as a vortex or spray stream...g
At 39 seconds or there about, you can see the "anomaly" trailing off the rear cargo door and there is a patch on one of the right MLG tire. I wouldn't think the tires will be that reflective. Then a split second after that, you can see a light white streak just below the right MLG. That too may be a refraction off the lens, but it would be too much of a coincident. You may have to be quick with the pause button to see it.