Russell Coker via luv-main wrote: > On Sunday, 25 September 2016 12:34:12 PM AEST Robin Humble via luv-main wrote: >> On Fri, Sep 23, 2016 at 01:59:16PM +1000, Russell Coker via luv-main wrote: >>> Is there a good free orbital simulator for Linux? >>> ..............snip >> a full Dyson sphere is neutrally/meta stable, but no idea how you'd >> actually construct it in a stable manner... likely someone has thought >> about it though! > https://en.wikipedia.org/wiki/Ringworld > > One thing that's noted in the Errors section of the above page is that a > ringworld as a rigid structure is not in orbit around the star but spinning > independently and would need attitude jets to keep it in place. A full Dyson > sphere would require the same but with greater complexity as the jets could > only be on the outside of the sphere.
No doubt this is correct, but it is not intuitive; - "intuitively" one might expect that movement of the centre of mass of either: the Ringworld or the Dyson Sphere away from the centre of mass of it's star; would result in a net gravitational force and thus dynamic stability ? regards Rohan McLeod _______________________________________________ luv-main mailing list [email protected] https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main
