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[PSUBS-MAILIST] Syntactic Lead Batteries

Now you done it Randy, ; )'
 
Now you see what you started.  You brought up balsa lead, of which made me think of syntactic metals I had read about, and then on to syntactic lead (AKA Balsa Lead). So I gently Googled syntactic lead and found a number of interesting things. Including the idear for a lighter battery for electric cars or what ever, using syntactic lead.
 
"Other interesting applications may arise for syntactic metal foams. Syntactic copper may find use in transformers. Many people in the automotive industry have already begun looking at various foamed metals for crush zones and floor panels in cars. Syntactic lead might be used to halve the weight of batteries for electric vehicles. "
 
http://209.85.135.104/search?q=cache:MLeLYMhmrgcJ:journals2.iranscience.net:800/www.memagazine.org/www.memagazine.org/backissues/january99/features/foams/foams.html+syntactic+lead&hl=en&ct=clnk&cd=2&gl=us
 
Now that made be perk up, since I've been seriously brian storming on my own ideas of how a submersible plane could be configured to have good performance above, as well as below the water's surface. Usually for subs, having heavy batteries is desired for extra stability, if you put them down real low in the sub.  But I like the idea of having a pretty light sub the has allot of weight in a number of releasable ballast for safety reasons. So a lighter battery means you will need to add more weight some place else to be able to submerge. In this case that extra weight would be put in the releasable ballasts to help get out of the sticky mud at the bottom, or get out of the jaws of some prehistoric creature. or just take the ship wreck your entangled with, to the surface with you. ; )
 
Now to make a flying sub, your going to want to make it as light as possible, or you will have to have massive wings and/or massive engine(s) to make her fly properly. Massive wings makes for poor underwater maneuverability. I figured I would have a pretty small aluminum or composite ( of which I could perhaps get a great composite pressure hull from Uboat Worx) pressure hull so I wouldn't need much weight to submerge properly.  So when it came to batteries I figured I would have to really limit the size and/or number of batteries on my far in future flying sub design, so could have good flying capabilities. This meant I would have limited submerged endurance, but since I would be generally be using the wings underwater to glide down with out much if any use of thrusters, and the same basic things using positive buoyancy as my power source on the accent, I might not need much power anyways. But syntactic lead batteries, or some other lighter battery technology like the ZEBRA battery might do the trick.



Regards,
Brent Hartwig


From: Recon1st@aol.com
Date: Sun, 26 Aug 2007 10:21:18 -0400
Subject: Re: [PSUBS-MAILIST] Open Discussion's Allowed in PSUB's Mailing List
To: personal_submersibles@psubs.org

In a message dated 8/25/2007 10:50:46 PM Central Daylight Time, erjlhj@cox.net writes:
you develop the fusion reactor and I will work on developing light weight balsa lead to shield it
Randy will do I am kinda of in hold at the moment on this project. Seems
the only source for H3 is on the moon. But both Russia and USA have
anounced plans to go within 5yrs interesting.
 
Dean



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