IKAROS JAXA Solar Sail mission |
IKAROS JAXA Solar Sail mission |
Mar 29 2010, 06:09 AM
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#101
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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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#102
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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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Jan 30 2011, 02:38 PM
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#103
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
can't wait to read the rest of the translation! many thanks in advance Pandaneko!
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Feb 6 2011, 09:29 AM
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#104
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Member Group: Members Posts: 817 Joined: 17-April 10 From: Kamakura, Japan Member No.: 5323 |
Page 14:
3: Orbit plan (from launch to Venus) launch: 21 May 2010 nearest approach to Venus: 8 December 2010 (There are 2 graphs here and this page must be self-explanetary, P) Caption at the top of the left graph says "Nearest approach to Venus on 8 December 2010", and the caption at bottom is "launch on 21 May 2010". At the centre is the sun, Venus green, earth blue. Caption at the top of the right graph is "Sun-Earth fixed system". At the centre is the sun and Venus green, and the character string just below IKAROS (in red) is the Earth Page 15: 3: Orbit plan (from nearest approach to Venus to the end of fiscal 2011) Black square: nearest approach to Venus on 8 December 2010 Black diamond: 31 March 2012 (There are 2 graphs here) With the left graph the sun is at the centre and the caption at the top is "nearest approach to Venus on 8 December 2010" With the right graph the caption at the top is "Sun-Earth fixed system", sun at the centre, Earth is the blue dot on the right, IKAROS movement in red. Page 16: 3: Orbit plan (from fiscal year end of 2011 to the furthest point) black diamond: 31 March 2012 black star: 6 December 2012 (There are 2 graphs here) 2 captions at the bottom of the lefthand graph, the left one says "furthest point on 26 December 2012" and the one on the right says "31 March 2012". With the right hand graph, my earlier comments apply. Page 17: 3: Operational policy for the latter half of IKAROS operation Given the limited coms capacity our operational policy is as follows: 3.1 February 2011: attitude/orbit determination (new themes 3 and 4, continuation 3) confirmation of sail extension and power generation (continuation 1 and 2) GAP operation and reproduction of ALDN observation data 3.2 May, June 2011: attitude/orbit determination (new themes 3 and 4, continuation 1 and 2) confirmation of sail extension and power generation (continuation 1 and 2) reproduction of GAP, ALDN data, engineering experiment with VLBI attitude/orbit determination upon changing spin rate and sun angle (new themes 1 and 2) 3.3 July 2011 and beyond: We will make our judgement based on the results obtained by June. Current tentative plan is as follows: We are going to change the spin rate and the sun angle over a very wide range and; 1. If we can improve coms status we will try a longer operation by economising on fuel. 2. If we cannot improve coms status asa result we will still try to economise on fuel and try to maintain MGA's link attitude. P |
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