2H4 From United States of America, joined Oct 2004, 8936 posts, RR: 65 Reply 2, posted (6 years 1 month 3 weeks 1 day 6 hours ago) and read 2059 times:
AIRLINERS.NET CREW HEAD DATABASE EDITOR
Quoting Starlionblue (Reply 1): Contrails are more dependent on altitude and atmospherics than on the type of plane.
Indeed. An aircraft doesn't need to be turbine-powered to pull contrails:
EMBQA From United States of America, joined Oct 2003, 9177 posts, RR: 15 Reply 3, posted (6 years 1 month 3 weeks 1 day 6 hours ago) and read 2059 times:
Quoting Ba757gla (Thread starter): I seen over my house high up opereting INV-LGW but noticed no contrail
Any aircraft engine will... even piston if the conditions are right.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
Redcordes From United States of America, joined Jan 2006, 245 posts, RR: 0 Reply 4, posted (6 years 1 month 3 weeks 1 day 5 hours ago) and read 2033 times:
The higher the humidity the more prominent and lasting the contrails are. When the weather starts to change from clear and dry to warmer and moister, the contrails gradually become more and more noticeable -- usually a couple days in advance.
"The only source of knowledge is experience." A. Einstein "Science w/o religion is lame. Religion w/o science is blind."
SlamClick From United States of America, joined Nov 2003, 10039 posts, RR: 76 Reply 5, posted (6 years 1 month 3 weeks 1 day 5 hours ago) and read 2031 times:
No. They don't have enough torque to pull the skin off a pudding.
Seriously: When I flew them they were restricted to FL300 or below (think that's the number) and if conditions were right as to temperature and dewpoint at that altitude, they would just like any other airplane.
Get up into the arctic and I suppose a helicopter would pull one.
When I was a kid, whenever we saw a contrail it went from one horizon to the other. Years later I figured out why. They were recips we were looking at - jets were all military and rather rare. We were looking at B-29, B-36, B-50, C-124, C-97 and the airliners were Super Connies, B-377s and so forth. They would pull a con down in the mid to upper twenties where a jet might not because there was far more particulate matter in their exhaust, oil, soot, ring fuzz, bits of impeller seal, you name it.
Happiness is not seeing another trite Ste. Maarten photo all week long.
2H4 From United States of America, joined Oct 2004, 8936 posts, RR: 65 Reply 6, posted (6 years 1 month 3 weeks 1 day 5 hours ago) and read 2024 times:
EMBQA From United States of America, joined Oct 2003, 9177 posts, RR: 15 Reply 7, posted (6 years 1 month 3 weeks 1 day 4 hours ago) and read 2021 times:
Quoting SlamClick (Reply 5): We were looking at B-29, B-36, B-50, C-124, C-97 and the airliners were Super Connies, B-377s and so forth.
Damb SlamClick..!! You are old..!!! LoL..
"It's not the size of the dog in the fight, but the size of the fight in the dog"
A319XFW From , joined Dec 1969, posts, RR: Reply 8, posted (6 years 1 month 3 weeks 1 day 4 hours ago) and read 2018 times:
Do 4 APU's cause contrails?
I was on an EZY flight last week and for the first time actually saw the contrails starting outside of my window when I looked back. Would have made a great pic, but I didn't have a camera with me.
That was at FL390.
SlamClick From United States of America, joined Nov 2003, 10039 posts, RR: 76 Reply 9, posted (6 years 1 month 3 weeks 1 day 3 hours ago) and read 1995 times:
Quoting 2H4 (Reply 6): did you 146 pilots actually refer to the airplane as the "Quadrapuff"?
Yes, and the quadraphonic leaf blower and the swineliner.
Because of the howling sound made by the flaps I called it "the hound of Hatfield" most of the time. After American tried stripping the paint off the ex-AirCal planes I referred to them as the "pewter pumpkin" because the skin would never buff out to anything like a shine.
But I did like flying the thing. It was slow, it didn't climb worth a damn and I guess they were expensive from a maintenance downtime standpoint but it was pleasant to fly.
The smallest jet I ever flew had four engines!
Happiness is not seeing another trite Ste. Maarten photo all week long.
SlamClick From United States of America, joined Nov 2003, 10039 posts, RR: 76 Reply 12, posted (6 years 1 month 3 weeks 10 hours ago) and read 1896 times:
Prebennorholm From Denmark, joined Mar 2000, 5809 posts, RR: 56 Reply 13, posted (6 years 1 month 3 weeks 5 hours ago) and read 1829 times:
When you burn one pound of fuel, then you always produce roughly 1.5 pound of water vapor.
It is only a question about temperature and relative humidity whether this produces contrails - condenses and freezes to ice crystals.
During this winter, which seems to never end, my car has produced a lot of contrails. The water vapor produced by the combustion condensed already within the cold exhaust tube.
Always keep your number of landings equal to your number of take-offs, Preben Norholm
SlamClick From United States of America, joined Nov 2003, 10039 posts, RR: 76 Reply 15, posted (6 years 1 month 2 weeks 6 days 13 hours ago) and read 1716 times:
Quoting Prebennorholm (Reply 13): When you burn one pound of fuel, then you always produce roughly 1.5 pound of water vapor.
Some contrail, usually short, is formed by the pressure reduction over the wings dropping the temperature below the dewpoint. When the air mixes and "warms" back up to ambient they dissipate.
Happiness is not seeing another trite Ste. Maarten photo all week long.
Brendan03 From Australia, joined Aug 2005, 951 posts, RR: 4 Reply 16, posted (6 years 1 month 2 weeks 6 days 12 hours ago) and read 1694 times:
Damnit! I saw a picture of an A310 taking off at some artic field somewhere and it was producing a massive contrail... I thought it was on Airbus's website but I may have been mistaken...
(Or It could have been shown in the making of the A380 video)
2H4 From United States of America, joined Oct 2004, 8936 posts, RR: 65 Reply 17, posted (6 years 1 month 2 weeks 6 days 11 hours ago) and read 1688 times:
Bri2k1 From United States of America, joined Dec 2004, 988 posts, RR: 4 Reply 18, posted (6 years 1 month 2 weeks 5 days 18 hours ago) and read 1555 times:
Quoting Prebennorholm (Reply 13): During this winter, which seems to never end, my car has produced a lot of contrails.
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