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#4574
Mon 12 Mar 2001 02:00:PM
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Joined: Feb 2001
Posts: 3,536
Mission Commander
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OP
Mission Commander
Joined: Feb 2001
Posts: 3,536 |
Dear All,<P>More good news: The Heat Pipes appear to be functional again!! <P>The S2 Tx was running about 35-37 °C in the last couple of weeks. It's<BR>temperature is now running at 19-20 °C, which means that the heat pipes<BR>are working again after the spin rate was lowered. <P>Also, the analog spin rate is now back close to calibration, showing 9.6<BR>RPM currently. <P>The current magnetorqueing is performing very well and will complete<BR>shortly. The attitude will be approx. 206/30 and 10 rpm. <P>With ALAT now out of the orbit plane, we can start changing ALON as well<BR>as controlling ALAT and further spin down. <P>The next magnetorque will be uploaded on orbit 167, and is predicted to<BR>reach s/c attitude 248/45 and 5.8 rpm, after 10 more perigees. The SA<BR>will be then around 38 deg. <P>Here the history table for the spin and sun angle:<pre><font size="2"><P> Expected Measured<BR> Orbit rpm SA rpm SA<BR> --------------------------------------------<BR> 156 17.59 39<BR> 157 16.93 38 16.73 38<BR> 158 16.18 37 15.87 37<BR> 159 15.43 36 15.20 35<BR> 160 14.70 35 14.66 34<BR> 161 13.95 34 13.91 33<BR> 162 13.22 33 12.99 32<BR> 163 12.50 33 12.11 30<BR> 164 11.80 31 11.36 28<BR> 165 11.11 30 10.74 27<BR> 166 10.41 29 9.82 25<P></pre></font><BR>73s Peter, DB2OS<BR> AMSAT-DL<BR>
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Entire Thread
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AO-40: Heat Pipes working again!
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VA3DBJ
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Mon 12 Mar 2001 02:00:PM
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