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#1
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NASA'S Clock is Ticking
Well it won't be long before Discovery will be coming down. Some one
once posted that it would be a good idea if shuttles could fold in their wings. Its the underbelly missing or possible tiles coming off that is the biggest problem,and next is the lead edge of the wings. Angle hitting the air is critical with an object with wings.(flipping flat stone effect) I've made stuff using cement(concrete) finished the surface with fine marble dust(Georgia marble). No seams smooth as a baby's ass. Can take great heat. I wonder what each of those shuttle tiles weighs? Bert |
#3
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JATO Thanks for that information. I thought the tiles might be kind of
heavy. Did know they have to come in different curvatures,but was unaware of their thickness. Been going to Florida back yards as gunite concrete pools are going in. For an extra $500 they finish the pool in powdered marble I was hoping this could be done for the shuttles underbelly. Kind of due away with those 20,000 crazy glued tiles. Bert PS the reason I go to houses with pools going in I hope to find another Florida meteorite that should be about 8 feet down. Nice to let some one else do the digging |
#4
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From Bert:
For an extra $500 they finish the pool in polished marble I was hoping this could be done for the shuttles underbelly. Kind of due away with those 20,000 crazy glued tiles. Bert, the use of individual tiles was well reasoned. The shuttle's airframe undergoes a fair amount if flexing and contorting from the stresses of launch and reentry. Also it expands and contracts some from temperature variations. Think of what would happen with a solid porcelain underbelly. The tiles are fitted with a slight clearance between them to allow the whole underbelly to flex and expand/contract without fracturing anything (hopefully :-)). oc |
#5
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Hi oc Flexible reinforce concrete is needed. Most sky scrapers
are made with poured concrete,and sway a lot in a hurricane 165 mph wind. They don't crack. Reality is cement can be made with lots of different features to fit the job.Saw a sail boat on lake Toho was made of continuos concrete. Very smooth looking and can't leak.Owner told me it was easy and fast to build. Its frame was chicken wire shell. This is exactly like the stucco homes in Huntington Beach are made,and they stand up to earthquakes Well oc it is just an idea. I like the burn away material used in capsule rentry the best. Its been proven it works every time. Beert |
#6
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G=EMC^2 Glazier wrote: Hi oc Flexible reinforce concrete is needed. Most sky scrapers are made with poured concrete,and sway a lot in a hurricane 165 mph wind. They don't crack. Reality is cement can be made with lots of different features to fit the job.Saw a sail boat on lake Toho was made of continuos concrete. Very smooth looking and can't leak.Owner told me it was easy and fast to build. Its frame was chicken wire shell. This is exactly like the stucco homes in Huntington Beach are made,and they stand up to earthquakes Well oc it is just an idea. I like the burn away material used in capsule rentry the best. Its been proven it works every time. Beert Isn't concrete a little too heavy to be using on aircraft and space vehicles? I've heard of the Spruce Goose and the Flying Wing, but I've never heard of the Flying Slab! Double-A |
#7
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Hi Double-A The tiles are made of heavy material,and there are 20,000
of them. Maybe some engineering thought should be given to slowing the shuttle speed down to half its rentry speed. A gentler meeting of the air. Half the friction means 50% less heat. Bert |
#8
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Double-A wrote:
G=EMC^2 Glazier wrote: Hi oc Flexible reinforce concrete is needed. Most sky scrapers are made with poured concrete,and sway a lot in a hurricane 165 mph wind. They don't crack. Reality is cement can be made with lots of different features to fit the job.Saw a sail boat on lake Toho was made of continuos concrete. Very smooth looking and can't leak.Owner told me it was easy and fast to build. Its frame was chicken wire shell. This is exactly like the stucco homes in Huntington Beach are made,and they stand up to earthquakes Well oc it is just an idea. I like the burn away material used in capsule rentry the best. Its been proven it works every time. Beert Isn't concrete a little too heavy to be using on aircraft and space vehicles? I've heard of the Spruce Goose and the Flying Wing, but I've never heard of the Flying Slab! Double-A Didn't they make ships out of concrete at one time ? ... and i am not thinking of the cement overshoe variety. RL |
#9
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"Raving Loonie" wrote in message oups.com... Double-A wrote: G=EMC^2 Glazier wrote: Hi oc Flexible reinforce concrete is needed. Most sky scrapers are made with poured concrete,and sway a lot in a hurricane 165 mph wind. They don't crack. Reality is cement can be made with lots of different features to fit the job.Saw a sail boat on lake Toho was made of continuos concrete. Very smooth looking and can't leak.Owner told me it was easy and fast to build. Its frame was chicken wire shell. This is exactly like the stucco homes in Huntington Beach are made,and they stand up to earthquakes Well oc it is just an idea. I like the burn away material used in capsule rentry the best. Its been proven it works every time. Beert Isn't concrete a little too heavy to be using on aircraft and space vehicles? I've heard of the Spruce Goose and the Flying Wing, but I've never heard of the Flying Slab! Double-A Didn't they make ships out of concrete at one time ? ... and i am not thinking of the cement overshoe variety. Yes. Ferro-concrete hulls are quite common. There were problems with many suffering from corrosion of the reinforcing wires, and at one time, 'homebuilt' boats using this technique, became almost 'uninsurable'. Remember though that concrete is only strong in compression (hence the steel wires in the hull), and for a largely tension structure (like a pressure vessel), is no use at all. Concrete is used in building to provide the compressive strength, infill, and mass only. The tension is taken using other materials (commonly steel). Best Wishes |
#10
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Hi RL If you ever make the mistake here in Florida of ever taking the
water out of a gunite concrete swimming pool it will come up out of the ground and float. Here in Florida asphalt,and cement is every where. I think that is even truer for NY city. If I knew how long the very high heat lasted I might come up with better ideas? I did figure out how to cool a roof with the heat of the Sun,and it has no moving parts. I can see its physics helping keeping the underbelly of the shuttle cool Bert |
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