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Re: Rotations
Posted By: Aiden <aiden@gravitymusic.com>Date: 12/20/99 8:08 p.m.

In Response To: Re: Rotations (btrinen)

> Second I would guess that you would need a lot more than two
> powerfull engines to rotate the halo without creating lts of
> uneven forces. Even once up to speed, you would want to have
> these engines on hand to adjust the orbit occasionally as
> foreign objects in the system (comets, asteroids, planetoids)
> pass by and may perturb the orbit (or space forbid, smash the
> Halo alltogether! eek!) Anyway those are my thoughts on the
> subject.

This certainly does pose a major problem. To maintain a stable orbit of a ring body around a Lagrange point, the orbit must remain uniform over time. Obviously after construction the object must be accelerated to speed by some sort of thruster: and for this, the twin opposing engine theory would actually hold up as long as they were precisely calabrated to fire and thrust in precise symmetry. However, space poses a negligable resistance force, especially on an object with the mass of Ring World. Therefore, if a force acted upon a localized point of the body (i.e., meteor impact) the orbit would be forced into a new kinetic orbit which was unstable, resulting in loss of pseudo-gravatic uniformity and a whole lot of structural problems. This new kinetic orbit is a lot harder to repair than creating the initial orbit from a static position. In fact, it might be impossible (definately with today's technology).

A likely solution to the problem would be OMS (orbital manuvering system) engines embedded into the edges of the ring. For those unfamiliar with this system, it is found in the form of several variable force engines on different angles in the nose of the NASA space shuttle, used for controlling gimble and pitch in a microgravity environment. This, tied to a VERY complex computer system tied to a MASSIVE amount of sensors could automatically repair the orbit when acted upon by a foreign force. A more likely situation would be to pair such a system with a great deal of "planerary" defense; lasers or some sort of focused magnetic field to destroy or push away approaching bodies that could destabalize orbit. Of course, all of this should be no problem for a culture that could build a 10k km ring in the middle of nowhere, right? =)

Aiden

Message Index



Replies:

Human Space CapabilityNapalm Loon 12/17/99 7:33 a.m.
     ...But where would they orbit?septimus 12/17/99 11:39 a.m.
           Re: ...But where would they orbit?Grey 12/17/99 12:40 p.m.
                 I'm dissapointed in you guys...Maxaminus 12/17/99 2:05 p.m.
                       Two possible definitions.Dispatcher 12/17/99 9:33 p.m.
                       Re: I'm dissapointed in you guys...SiliconDream =PN= 12/17/99 9:43 p.m.
           Re: ...But where would they orbit?Jägermeister 12/17/99 1:22 p.m.
                 Re: Internal orbitsMark Levin 12/17/99 2:15 p.m.
                       Re: Internal orbitsMage 12/17/99 2:32 p.m.
                             Re: Internal orbitsMark Levin 12/17/99 2:38 p.m.
                                   Re: Internal orbitsMage 12/17/99 4:13 p.m.
                                         Re: Internal orbitsMaxaminus 12/17/99 4:45 p.m.
                                               Re: Internal orbitsMage 12/17/99 11:06 p.m.
                                                     Re: Internal orbitsMark Levin 12/18/99 12:42 a.m.
                                                           Re: Internal orbitsMage 12/18/99 11:31 a.m.
                       Re: Internal orbitsMr. Eez 12/17/99 4:27 p.m.
                       Re: Internal orbitsMacGuyver 12/17/99 4:49 p.m.
                             Re: Internal orbitsMark Levin 12/17/99 5:02 p.m.
                                   Re: Internal orbitsSiliconDream =PN= 12/17/99 9:42 p.m.
                                         Uses for the Halo's axis...Noctavis =PN= 12/20/99 3:31 p.m.
                                               Stable Orbits (again)Butcher 12/21/99 1:36 a.m.
                                                     Placing a satellite in the center of the HaloNoctavis =PN= 12/21/99 10:35 a.m.
                                                           Re: Placing a satellite in the center of the HaloButcher 12/21/99 2:33 p.m.
                                                                 Unstable orbits... Why use a halo orbit?Noctavis =PN= 12/21/99 6:31 p.m.
                                                                       Tides on the HaloButcher 12/21/99 7:03 p.m.
                                                                             Re: Tides on the HaloSomeguy 12/21/99 8:00 p.m.
                                                                                   Re: Tides on the HaloButcher 12/21/99 9:35 p.m.
                                                                             Re: soell•Mimer 12/25/99 3:55 p.m.
                                                                                   Re: soellMatt 12/27/99 11:53 a.m.
                                                                                         Re: soellDaft Shadow =PN= 12/27/99 4:11 p.m.
                                                                                               Re: soellBachus 12/27/99 6:50 p.m.
                                                                       Re: Unstable orbits... Why use a halo orbit?SiliconDream =PN= 12/21/99 11:40 p.m.
                                   Re: Internal orbitsNathan 12/20/99 4:37 a.m.
                                         Re: RotationsForensic 12/20/99 11:58 a.m.
                                               Re: RotationsSiliconDream =PN= 12/20/99 2:21 p.m.
                                                     Re: Rotationsbtrinen 12/20/99 2:53 p.m.
                                                           GravitySyberSmoke 12/20/99 3:09 p.m.
                                                                 Re: GravitySiliconDream =PN= 12/21/99 11:00 p.m.
                                                           Re: RotationsNoctavis =PN= 12/20/99 3:11 p.m.
                                                           Re: RotationsAiden 12/20/99 8:08 p.m.
                                         Spin that ringL. Tankersley ("Cap'n Carnage") 12/20/99 5:12 p.m.
                                               Re: Spin that ringDispatcher 12/20/99 9:43 p.m.
                                                     Re: Spin that ringL. Tankersley ("Cap'n Carnage") 12/21/99 10:25 a.m.
                                                           Re: Spin that ringDispatcher 12/21/99 11:10 p.m.
                                               L1? or L4-5?Oddot 12/22/99 10:24 a.m.
                                                     Re: L1? or L4-5?L. Tankersley ("Cap'n Carnage") 12/22/99 2:54 p.m.
                                         Q: How do you spin the Halo?Ironfist [CMG] 12/20/99 5:41 p.m.
                                         Re: Internal orbitsChris Huff 12/20/99 6:59 p.m.
                                         Re: Internal orbitsRingdude 12/20/99 7:18 p.m.
                                               Re: Internal orbitsSiliconDream =PN= 12/21/99 11:06 p.m.
                                                     Re: Internal orbitsSomeguy 12/21/99 11:11 p.m.
                                                           Re: Internal orbitsSiliconDream =PN= 12/22/99 4:06 a.m.
                                         Re: Internal orbitsThomas Magle Brodersen 12/21/99 3:06 a.m.



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