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Re: AO-40: Heat Pipes working again!



I always like to hear good news !

http://www.amsat-dl.org/journal/adlj-p3d.htm


G. Beat

----- Original Message -----
From: "Peter Guelzow" <peter.guelzow@arcormail.de>
To: <amsat-bb@AMSAT.Org>
Sent: Sunday, March 11, 2001 12:35 PM
Subject: [amsat-bb] AO-40: Heat Pipes working again!


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

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