Cubesat 10x10x10cm 1kg Payload, Lets here it then... |
Cubesat 10x10x10cm 1kg Payload, Lets here it then... |
Sep 15 2005, 06:53 PM
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#1
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Member Group: Members Posts: 562 Joined: 29-March 05 Member No.: 221 |
I'm sure many of you will be familar with the CubeSat project, in fact some of you may well have worked on one.
So lets hear it, what would you do with a 10x10x10cm 1kg payload in a CubeSat, beside the obvious like stick a camera in it and photograph your house. Who knows, perhaps one day we may see the launch of the USF CubeSat |
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Sep 17 2005, 06:21 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
Having it intelligent enough to know which way to point is easy
GETTING it to point in that direction is hard. micro-gyros are expensive, electromagnetic stabilisation is slow. Doug |
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Sep 17 2005, 07:05 PM
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#3
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Member Group: Members Posts: 345 Joined: 2-May 05 Member No.: 372 |
QUOTE (djellison @ Sep 17 2005, 02:21 PM) Having it intelligent enough to know which way to point is easy GETTING it to point in that direction is hard. micro-gyros are expensive, electromagnetic stabilisation is slow. Doug For the sun, all it needs is a sun-sensor and some way to spin to the right orientation, possibly mini reaction wheels. I don't think it would really need gyros. How about this: 5 very low precision sun position sensors (just a light-sensitive chip), one for every side but the front; 1 low precision sun position sensor (a fisheye lens and a ccd); 1 medium precision sun position sensor (a medium focal length lens and a ccd); and the final positioning will be done with the telescope itself. And yes, I have loads of faith in modern miracles of miniaturization. |
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Sep 17 2005, 08:48 PM
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#4
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (um3k @ Sep 17 2005, 08:05 PM) For the sun, all it needs is a sun-sensor and some way to spin to the right orientation, possibly mini reaction wheels. I don't think it would really need gyros. How about this: 5 very low precision sun position sensors (just a light-sensitive chip), one for every side but the front; 1 low precision sun position sensor (a fisheye lens and a ccd); 1 medium precision sun position sensor (a medium focal length lens and a ccd); and the final positioning will be done with the telescope itself. And yes, I have loads of faith in modern miracles of miniaturization. As a technology demonstrator, something that can seek the Sun is probably about as easy as you can get - and I'd think in terms of light-sensitive diodes, not even chips! You're talking about an analog control system, or possibly something which might be considered as a neural network, with 'learning' to account for biased inputs. The HDU gyro idea seems like an ideal reaction control method, too - but you'll still need to de-spin at some point. Perhaps a gravity gradient default attitude would do the job, but that might require a boom - and I don't much like moving parts (spinning, that's fine!). If the system works, apply it to the next satellite... -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Sep 18 2005, 07:27 AM
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#5
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
Don't hard drives require air to levititate the heads off the platters? What happens in space? Did those previous experiments seal the HD's in their own atmo?
-------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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