IKAROS JAXA Solar Sail mission |
IKAROS JAXA Solar Sail mission |
Mar 29 2010, 06:09 AM
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#31
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Member Group: Members Posts: 202 Joined: 9-September 08 Member No.: 4334 |
IKAROS sounds really cool, is there any website to find more info on it?
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Mar 29 2010, 07:19 PM
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#32
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Member Group: Members Posts: 540 Joined: 25-October 05 From: California Member No.: 535 |
IKAROS sounds really cool, is there any website to find more info on it? Project Page: http://www.jaxa.jp/projects/sat/ikaros/index_e.html Photos: http://jda.jaxa.jp/jda/p3_e.php?mode=level...mp;mission=9095 Description Page: http://www.jspec.jaxa.jp/e/activity/ikaros.html -------------------- 2011 JPL Tweetup photos: http://www.rich-parno.com/aa_jpltweetup.html
http://human-spaceflight.blogspot.com |
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Feb 1 2011, 02:07 AM
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#33
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Pandaneko, by all means please take your time...and thank you for this!!!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Feb 2 2011, 09:41 AM
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#34
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Member Group: Members Posts: 817 Joined: 17-April 10 From: Kamakura, Japan Member No.: 5323 |
Page 5:
2: operational procedures and confirmed results against mission requirements (on the diagram) red blacket relates to the first few weeks in search of a minimum success, whch is the extention of the membrane and power generation and the blue bracket relates to the following 6 months in search of a full success, which is to verify the acceralation by the sail and to gain navigational skills (Here, character strings are numbered from 1 to 5 and these are) 1. launch (21 May) and spin seperation of the craft (5 rpm) 2. initial checking and spin-up (25 rpm) 3. solar sail extension (2.5 rpm, 2-9 June), power generation on 10 June, and spin rate adjustment (1-2.5 rpm) 4. acceralation by the sail (9 July) 5. orbit control and navigation skills (December 2010) Page 6: 2: Membrane extension (attitude data) 1. leading mas seperation on 26 May, primary extension during 2-8 June, and final extension on 6 June. Extension mechanism wroked well and spin behaviour was more or less consistent with expectation. 2. Departing camera was used on 14 and 19 June and captured the sail image and confirmed no anomaly. (there are 3 graphs here, from left to right, and these are) 1. leading mas seperation 2. primary extension, and 3. start of final extension With these graphs vertical axes on left are the spin rate around Z-axis, and that on the 3rd graph on the right is the angular velocity (red for X-axis and blue for Y-axis) Page 7: 2: sail extension images There are 6 images here, those on left were taken by the engineering camera on board and those two on the right were by the departing camera. 4 captions for the engineering camera, clockwise, are: 1. after leading mas seperation 2. during primary extension 3. after final extension 4. after primary extension The caption for the departing camera images is "confirmation of liquid crystal device", ON is specular reflection and OFF is diffuse reflection Page 8: 2: Power generation by the sail We conducted a verification test on 10 June, followed by about once/week of characteristics evaluation and confirmed that the data was more less consistent with the predicted values obtained on the ground. There is one table and one graph here on this page. The header row for the table at top, from left to right says; number, membrane section measued, Isc, Pmax, Imp, and temp The second row has only one character string and that is the predicted value. With the graph on right the caption on top is I-V characteristic. These measurements were taken at 22:50 on 10 June, 2010, at 1.05 AU, earth distance of 7860133 km, sun angle at 13 deg, spin rate at 2.5 rpm. Pandaneko |
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