http://www.metafilter.com/tags/stability/rss tag posts with stability Sun, 09 Dec 2007 10:02:35 -0800 Sun, 09 Dec 2007 10:02:35 -0800 en-us http://blogs.law.harvard.edu/tech/rss 60 http://www.metafilter.com/67307/Gampoumlmbampoumlc The <a href="http://www.gomboc.eu/gomboc_english.html">G&#0246;mb&#0246;c</a> is the first known convex, homogeneous <a href="http://en.wikipedia.org/wiki/Image:Gomboc2.jpg">shape</a> having just one stable and one unstable point (i.e. altogether two points) of equilibrium. A little like some turtles' shells (or <a href="http://www.bigredtoybox.com/articles/weebleindex.shtml">weebles</a>), it's <a href="http://www.gomboc.eu/100.pdf">self-righting</a>, but for purely geometric reasons. You can have your very own personal G&#0246;mb&#0246;c -- for a price. Made in a limited series, numbered 001-2007, the models (manufactured to 0.01mm precision) are variably priced. G&#0246;mb&#0246;c "X" sells for EUR (900 + 200 000/X). tag:metafilter.com,2008:site.67307 Sun, 09 Dec 2007 10:02:35 -0800 geometry gomboc vladimirarnold stability mono-monostatic gleuschk http://www.metafilter.com/47969/Proxflyer <a href="http://www.proxflyer.com/meny.htm">World's smallest flying robots</a> In the early 1930 's, <strong><a href="http://www.arthuryoung.com/index.html"> Arthur Young</a></strong>, a brilliant young inventor, built and successfully demonstrated a viable, flyable<a href="http://www.aeromuseum.org/Articles/June04/Bell47B.htm"> helicopter </a>model. In Oslo Peter Muren <strong><a href="http://www.proxflyer.com/evolution.pdf">developed</a></strong> a totally silent and aerodynamically stable coaxial rotor <strong><a href="http://www.proxflyer.com/press_1_03.pdf">flying robot</a></strong>.In Brussels Alexander Van de Rostyne developed a <strong><a href="http://pixelito.reference.be/">6.9 grams helicopter</a></strong> with infrared 4<strong><a href="http://pixelito.reference.be/pixelito%203.htm"> axis control</a></strong>.<strong><a href="http://www.proxflyer.com/ph01.htm"> Very </a></strong><strong><a href="http://www.interactivetoy.com/latestnews_rc_heli.htm">cute</a></strong> <strong><a href="http://www.helis.com/inc/dibu.php?m=1&s=../featured/lowflite.jpg">too</a></strong> <strong><a href="http://www.ursispaltenstein.ch/blog/weblog.php">.</a></strong> tag:metafilter.com,2008:site.47969 Mon, 02 Jan 2006 02:24:03 -0800 minature rotocraft models flyingrobot stability flight lateralthinking intuition invention hortense