A340-600 From France, joined Aug 1999, 93 posts, RR: 2 Posted (14 years 3 weeks 1 day 18 hours ago) and read 1242 times:
- I would like some informations about Uranuim in planes (B747,Dc10,L1011,C-130...).
- Is there any other planes which use Uranuim.
- Why do Airbuses not use uranuim? even A300?
- What do you think about it?
- Is there any URL about this suject?
Ikarus From United Kingdom, joined Jan 2001, 3524 posts, RR: 2
Reply 1, posted (14 years 3 weeks 1 day 18 hours ago) and read 1225 times:
Uranium is only used where its comparatively huge density is needed. As far as I know, mostly as counterweight for spoilers and other control surfaces in the case of the b747.
I don't mind the uranium. At that altitude, you are more tormented by the atmospheric radiation than by the bits in the plane. And when it crashes, it is usually easily recovered without endangering anyone. That's all the info I can offer.
You might want to post your questions in the Tech/Ops forum, where many more knowledgeable users can give good advice.
Prebennorholm From Denmark, joined Mar 2000, 6642 posts, RR: 54
Reply 2, posted (14 years 3 weeks 1 day 18 hours ago) and read 1209 times:
The only application of uranium in airliners I have heard of is rudder balance on the CV-990. (We are of course talking about U-238, not the 235 variant).
I think that it was chosen as a substitute for lead because the rudder was larger than the CV-880 rudder. With this substitute some substantial redesign of the CV-880 fixed fin was prevented. Uranium is much heavier than lead.
U-238 is a toxic heavy metal just like lead which is widely used on all types of aeroplanes. When talking about U-238 disadvantages compared to lead, then there is probably only one really serious one, the price! Lead is so much cheaper.
It is not pleasant to have to work with heavy metals of any kind, not to mention having it spread in the environment when planes (military or civil planes) fall out of the sky. But that impact is really minor compared to the amounts of lead which gets spread all over from hand weapons - military and civil - wars, hunters, murderers and whatever.
The obvious substitute for all toxic heavy metals is gold. It has the weight, but lacks the toxic properties. Gold just doesn't work in lead-acid batteries. But I doubt very much that we will ever fly on planes with gold balance weights.
Best regards, Preben Norholm
Always keep your number of landings equal to your number of take-offs, Preben Norholm
Yaki1 From , joined Dec 1969, posts, RR:
Reply 3, posted (14 years 3 weeks 1 day 18 hours ago) and read 1201 times:
The DC-8 also had depleted uranium counter weights on control surfaces. Depleted uranium is a by product of removing enriched uranium from natural uranium. I remember working in overhaul shops many years ago, handling depleted uranium weights with no protective gear, now we read how it is a health hazard.