| Attitude Control Mechanisms; Anything that rotates the cubesat | |
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| Tweet Topic Started: Sep 11 2008, 01:59 PM (513 Views) | |
| matt.janish | Sep 11 2008, 01:59 PM Post #1 |
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ACS
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I found a nice little reaction wheel: IntelliTech Microsystems 7.62 x 7.62 x 6.98 cm 2.4 W power supply (12 V @ 200 mA) Suitable for a satellite weighing up to 20 lbs. edit- The weight of this wheel makes it out of the question. I forgot we're limited to 1 kg. Check out this site instead: Sinclair Interplanetary reaction wheels Edited by matt.janish, Sep 11 2008, 07:06 PM.
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| matt.janish | Sep 11 2008, 04:18 PM Post #2 |
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ACS
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Looking at past cubesat missions, it appears that very few of them used reaction/momentum wheels for attitude control. Many of them used magnetorquers. It also seems as though sun sensors were widely used for orientation, as well as magnetometers. I even saw one that used a horizon sensor/star tracker combo, which seems to be a low-cost option. The list of cubesat missions that Suarav posted should tell us a lot about the practicality of the different options we find. |
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| jessica | Sep 13 2008, 02:53 PM Post #3 |
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This site links to places to actually buy magnetometers of various kinds: www.magnetometer.org and here's a site that has a good intro to geomagnetism and information on the IGRF model: http://geomag.usgs.gov/ |
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| Brenda.Granados | Sep 13 2008, 04:45 PM Post #4 |
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ACS
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magnetorquers = magnetic torquers? i'm not sure if this is what we are looking for, but i found a brochure for magnetic torquers that gives a brief overview about it's uses: http://www.smad.com/ie/ieframessr2.html under Off the Shelf Sizes, there's a link to the brochure. it doesn't get very specific with prices. i think i read somewhere that magnetic torquers may be used in combination with the reaction wheels. i could probably cite the source later. Edited by Brenda.Granados, Sep 13 2008, 04:48 PM.
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| matt.janish | Sep 15 2008, 07:09 PM Post #5 |
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ACS
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Look at tables 2 and 3 on page 2 of the paper here: sun sensor paper This seems like a really good idea. |
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3:45 AM Jul 11