Starlionblue From Greenland, joined Feb 2004, 17076 posts, RR: 66
Reply 1, posted (6 years 10 months 2 weeks 4 days 13 hours ago) and read 7343 times:
Well, for starters the DC-3 wasn't pressurized so a perfect seal wasn't necessary. I would also imagine that the tolerances required for a good rain seal were a bit too expensive to be economically viable.
How does the DC-3 compare to other 1930s designs in this regard?
"There are no stupid questions, but there are a lot of inquisitive idiots."
Metroliner From United Kingdom, joined Jan 2007, 1067 posts, RR: 1
Reply 5, posted (6 years 10 months 2 weeks 3 days 17 hours ago) and read 7062 times:
I can't imagine the build quality on those Daks, when they were built in the numbers (or should I say 'hordes') they were, would have stretched to ensuring the windows sealed correctly. The most important thing was that it flew, was built like a tank, and just generally ruled the skies for forty-odd years... (no exaggeration there)
Buzz From United States of America, joined Nov 1999, 697 posts, RR: 21
Reply 14, posted (6 years 10 months 5 days 22 hours ago) and read 6574 times:
Hi MEL, and KELPKid, Buzz here. I have a little practice regarding how DC-3's are put together, used to Crew Chief one or two.
The nose has a unique hatch, it opens upward like the hood of a car. Yes, there's a foam tape we put in the gap. I haven't flown one in the rain so I don't know exactly where it leaks.
There's a snap-in curtain on many DC-3's that's just forward of the instrument panel, I don't know if it's to keep the drafts away from the pilot's feet and knees... or to make the rain flow outward to the sidewalls.
MEL, the radios on a DC-3 were often in a rack aft of the cockpit... 1940's radios were large. But modern radios are smaller, lots of people mount them on the instrument panel. And since not many people fly a DC-3 through wet weather for fun, I guess we won't know if that set-up has radio problems in the rain. (Most of the DC-3 flying I know of is for fun on VFR days).
Windshield leaks... I suppose so. When parked, N84KB, and NC18121 didn't leak in the rain here in this damp part of the world. But we didn't plow through rain either.
Oh yes, both the DC-3's I used to play with had 1 piece windshields. Remember there was a 2 section windshield, you could hinge the outboard section open to see for landing... after you had covered it with ice. I haven't dealt with that kind... more areas to leak.
Aviopic From Netherlands, joined Mar 2004, 2681 posts, RR: 42
Reply 17, posted (6 years 10 months 5 days 1 hour ago) and read 6471 times:
I guess the biggest difference and reason for leaky DC2's and 3's(and infect all other a/c from that period) is the lack of a pressure cabin which is the best way to keep water out.
Also everything was still riveted rather then glued together.
- "The hood" located right above the lights is not really a problem, there is a watertight seal(like a blanket) underneath and if water comes in it will leave just as quickly via the bottom.
- The square hatch located on top of the cockpit(emergency exit) does leak, a fair amount of DC4(which in this case is not an a/c but a silicon based grease also known as MS4) all around before every flight does miracles though.
- The sliding windows leak depending the wind direction, one crew member is lucky the other one is not
- Emergency exit's in the cabin are not like today going inwards but outwards which means they are not flush with the fuselage and thus leak.
- Further water can come from anywhere, a cracked beacon light lens hood, a warn out rivet just anything and without pressurized cabin there is nothing to stop it.
All in all it is not that bad either though, water comes in and leaves thru the bottom because it is just as well...... ehh well ventilated
If you approach weather like this: http://www.honders.net/tmp/DC2_NC39165_MG_3993v.jpg
You have 2 options
1. Run like hell in the other direction.
2. Get out the old swimming suit and start running around with rolls of tissue paper.
I personally opt for the last just for the fun of it
Quoting HAWK21M (Reply 7): Was there Electronics Malfunctions due to these leaks.
It's just a matter of using common sense really.
We removed all 115V systems including the inverters, left with just a 24V bus there is no problem in that area.
The truth lives in one’s mind, it doesn’t really exist