h a l f b a k e r y"It would work, if you can find alternatives to each of the steps involved in this process."
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
browse anonymously,
or get an account
and write.
register,
|
|
|
Please log in.
Before you can vote, you need to register.
Please log in or create an account.
|
spring ball
a ball that doesn't use an inflatable bladder | |
This is a ball that has telescopic spring-biased members (like pogo sticks) radiating from the center. The telescopic members are covered with a flexible sphere.
I can't think of too many advantages of this ball. Maybe for playing soccer on the moon ;)
spring ball illustration
http://imgur.com/a/B1hMV
[xaviergisz, Feb 16 2008, last modified Dec 14 2011]
Patent US 6280356
http://v3.espacenet...C&IDX=US6280356&F=0
closest I could find [xaviergisz, Feb 18 2008]
[link]
|
| |
Our son had a spring ball, just the springs and no covering. |
|
| |
We had a Spring Ball when I was up at university. |
|
| |
(+) for using the phrase "telescopic members" in a sentence.
Add a remote control and you'll have my $29.99. |
|
| |
Wouldn't a really low pressure ball that was somewhat heavier also be playable on the moon? |
|
| |
probably WcW, but you couldn't take it from inside the space capsule to the outside without it exploding. |
|
| |
// but you couldn't take it from inside the space capsule to the outside without it exploding // |
|
| |
That depends how strong the outer casing is. The difference in pressure between the interior and exterior of the vessel would be (at most) one bar; many spacecraft have a much lower internal pressure. Producing a ball that could survive an effective one bar increase in internal pressure isn't rocket science. However, the ball would prove less resilient. Also, diving to save a goal in a full environment suit is probably not recommended by the manufacturers. Check on the little tab in the back of the collar before you try it. |
|
| |
//The difference in pressure between the interior and exterior// - these could be the same. There'd be no need for such a ball to be air tight. |
|
| |
I think you might get a more ball-like-feel by maintining its shape, not from springs radiating from the centre, but between one surface section and the next. Image a ball made up of loads of triangular factes, as you might have with a CG sphere in a 3D engine. Each facet, or polygon, attempts to maintain its orientation with its three surrounding facets (again, polygons). |
|
| |
It wants to be a sphere, it'll always return to being a sphere, so don't bother pumping it up. |
|
| |