[00:01.220 --> 00:02.920]  Challenge 2.
[00:04.720 --> 00:09.580]  The satellite is spinning out of control because the Attitude Determination and Control System,
[00:09.580 --> 00:17.060]  ADCS, has been manipulated. We suspect sabotage. The challenge? Teams must repair the ADCS system
[00:17.060 --> 00:22.080]  as quickly as possible to stop the dangerous spinning. Here's how they do it. Teams may
[00:22.080 --> 00:26.900]  first search the provided documentation for the appropriate command to reset the ADCS.
[00:26.900 --> 00:32.760]  They find it and execute it. But the reset does not work. The ADCS system begins communicating
[00:32.760 --> 00:38.800]  again, but it is not functioning properly. Teams discover that the ADCS configuration tables have
[00:38.800 --> 00:43.760]  been altered and must be restored. They have to find the nominal parameters for the configuration
[00:43.760 --> 00:48.540]  tables from the provided user documentation. The teams then have to upload a new table to
[00:48.540 --> 00:53.380]  the vehicle and command the ADCS to load the table. This is how they will restore nominal
[00:53.380 --> 00:59.480]  operation of the ADCS. Good news! With the ADCS configuration table updated,
[00:59.480 --> 01:05.680]  they receive nominal status from the ADCS, but the majority of the ADCS commands still don't work.
[01:05.720 --> 01:10.620]  Teams realize that they can point the satellite by uploading various ADCS configuration tables
[01:10.620 --> 01:14.920]  each with different pointing modes and configuration parameters and loading them
[01:14.920 --> 01:20.020]  at different points in the orbit of the satellite. This allows the teams to stop the spin of the
[01:20.020 --> 01:23.860]  vehicle and point the solar arrays at the sun to charge the batteries.