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Edited by Dean411, 04 March 2014 - 08:16 AM.
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Posted 04 March 2014 - 07:41 AM
This is ridiculous, I'll be watching
Terminat hora diem; Terminat author opus.
The hour ends the day; The author ends his work.
Oh lente lente noctis equi!
Slowly, slowly run oh horses of the night!
Perfection does not exist, but that does not mean you cannot work constantly to attain it.
The really important kind of freedom involves attention, and awareness, and discipline, and effort, and being able truly to care about other people and to sacrifice for them, over and over, in myriad petty little unsexy ways, every day. . . . The only thing that's capital-T True is that you get to decide how you're going to try to see it. You get to consciously decide what has meaning and what doesn't. . . . The trick is keeping the truth up-front in daily consciousness. -David Foster Wallace
Posted 04 March 2014 - 08:21 AM
Posted 05 March 2014 - 01:48 PM
Calculated lift? What kind?
"I split the heavens with the thunder of man..
I vanquish the night with the stars of my hand."
Volume 75, Chapter 15, Verse 10
Posted 05 March 2014 - 03:21 PM
Posted 05 March 2014 - 03:33 PM
I'd estimate the shell weight to be closer to 4700-5000lbs. When the size of a shell doubles, it approximately scales. A 4" ball shell weighs about 1lb, so an 8" shell should weigh about 8lbs. A 12" shell weighs around 18-22lbs, so a 24" shell weighs about 160lbs (real weight about 140ish). A 16" shell weighs about 70lbs, so a 32" shell should weigh about 560lbs. A 36" shell weighs about 650-700lbs, so a 64" shell would weigh about 5200-5500lbs. Subtract a bit for being 60" instead of 64" and you're in the ball park.
Posted 05 March 2014 - 03:36 PM
Edited by ddewees, 05 March 2014 - 03:46 PM.
Posted 06 March 2014 - 09:23 AM
Wow, that is an interesting analogy.
They intend for it to be lifted as a traditional shell.
Posted 11 March 2014 - 04:04 PM
Hah, so it turns out I'm occasionally terrible at math. Somehow 36 x 2 equals 64 in my mind. My initial estimate was way off. Fred says 1700lbs, I'd be more inclined to go with between 2000-2100.
Posted 11 March 2014 - 04:33 PM
Posted 12 March 2014 - 04:00 AM
On large shells, cotton seed is often used as it is even larger and lighter than rice hulls. On monster shells like this project, I have no idea what they will use as a carrier to get the appropriate about of burst and keep the shell as light as possible.
Posted 12 March 2014 - 07:16 AM
Maybe they could use tennis balls, or stuffed teddy bears or maybe cabbage patch dolls.
oh my, that's disturbing.
Posted 12 March 2014 - 12:47 PM
Some 36" shells I'm aware of used full sized wine corks as a carrier, and bed sheets to separate the burst from the inserts/stars. Just imagine pasting in the three dozen(ish) 8" shells used, in addition to making the casing by hand, and pasting the 100 or so layers on the outside by hand. Makes you appreciate how easy the WASP has made some people's lives.
Posted 16 March 2014 - 04:24 AM
Most of the weight of the shell - it stars.
Weight and cost can be reduced if you use a star TT+8%Ti or C8+ 8%MgAl (in reality it is a comet stars ).
"We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard". John F. Kennedy
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Posted 24 March 2014 - 06:21 PM
I've always had this fantasy of breaking the world record myself, and going straight to a six footer. I'm glad that some people are breaking the world record without killing my unlikely to be fullfilled fantasy. I'll keep dreaming though!
ddewees, I'd be very tempted to drop it from an aircraft too. Not only would it be easier, but probably cheaper too, when you consider the cost of buying and setting up the mortar for only one, or at most a few shells.
I'd be really impressed if they dio lift it traditionally though!
Posted 28 March 2014 - 09:24 PM
I think there could be legal challenges to air dropping shells... mostly it's against the law to carry explosives on a plane. Might be easier to cooperate with the military on this matter and drop it from a military aircraft. An altimeter would be needed to be installed on the shell so that it bursts at a precise altitude.
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