I'm doing the apollo11 mission and I've been able to land. Now I'm learning to do the alignment of the IMU on the surface (P57), which the first comes in get +-103h20:
https://puu.sh/CBVfS/eeae7ea95c.png
I read about it in this link:
https://www.hq.nasa.gov/alsj/aot.ht...Cx9haPJ944KnIPo_89rMZ1ikp9cuV8nOz2zvk0TK0kEQg
I think I've already made a good alignment. But I still have some doubts. Initially the AGC gives me R1=00546, which corresponds to the dentent CL, and 46 to the Sun, and it does not work. Is this normal?
https://puu.sh/CBVkw/8ed8931206.png
I must mark three times each of two stars I chose. The first mark I do on the Y-axis in the detent and Cursor angle that AGC gives me .After I chose a good star and detent, normaly the AGC gives me the same star in another detent:
https://puu.sh/CBVwS/2db0539135.png
https://puu.sh/CBVGl/f8d978340f.png
https://puu.sh/CBVI8/0dc37de6f9.png
https://puu.sh/CBVM2/3570e44ec2.png
https://puu.sh/CBVNw/3d5240bfe3.png
Then I adjust the Y axis precisely, and mark. Then I load the new Cursor angle on the AGC (R1).
https://puu.sh/CBVSc/1531ed0ba0.png
https://puu.sh/CBVTc/8109592ec0.png
Then comes the V32E Recycle, and I have to make the 2º mark. What I do is repeat the previous procedure by marking the Y-axis again.
https://puu.sh/CBVW3/f1f9229c69.png
https://puu.sh/CBVYe/1314b09d4d.png
Then when the V32 Recycle comes, I rotate the AOT to the of the spiral angle in R2, I ajust the spiral precisely to the star an Mark for the 3º time. Then I load the new angle of the spiral in the AGC (R2).
https://puu.sh/CBVZ9/55cc737904.png
https://puu.sh/CBW2u/ece30abab3.png
https://puu.sh/CBW5P/3a70764dfc.png
https://puu.sh/CBW7o/7e4191c666.png
Then I do the same for second star I can find, that is accepted by the AGC.
https://puu.sh/CBWeK/69106d0eee.png
https://puu.sh/CBWqj/45d082a653.png
and so on….
Of all attempts, with this procedure I was able to get better values, at least I think so. Is this procedure correct?
https://puu.sh/CBWtv/fc908aaf34.png
https://puu.sh/CBWwA/d5a2874da9.png
https://puu.sh/CBWxo/12122d8137.png
https://puu.sh/CBWy3/fff2b6e9fa.png
In the surface alignment it is indifferent to mark with Q (X) or Y (Y), right?
I also noticed that some of the stars we chose to do the alignment, make the AGC PROG light to turn on, and also that works better with the stars that are in the detents 1 (L), 2 F), and 3 (R). Can you give me some help/tips?
Thanks
https://puu.sh/CBVfS/eeae7ea95c.png
I read about it in this link:
https://www.hq.nasa.gov/alsj/aot.ht...Cx9haPJ944KnIPo_89rMZ1ikp9cuV8nOz2zvk0TK0kEQg
I think I've already made a good alignment. But I still have some doubts. Initially the AGC gives me R1=00546, which corresponds to the dentent CL, and 46 to the Sun, and it does not work. Is this normal?
https://puu.sh/CBVkw/8ed8931206.png
I must mark three times each of two stars I chose. The first mark I do on the Y-axis in the detent and Cursor angle that AGC gives me .After I chose a good star and detent, normaly the AGC gives me the same star in another detent:
https://puu.sh/CBVwS/2db0539135.png
https://puu.sh/CBVGl/f8d978340f.png
https://puu.sh/CBVI8/0dc37de6f9.png
https://puu.sh/CBVM2/3570e44ec2.png
https://puu.sh/CBVNw/3d5240bfe3.png
Then I adjust the Y axis precisely, and mark. Then I load the new Cursor angle on the AGC (R1).
https://puu.sh/CBVSc/1531ed0ba0.png
https://puu.sh/CBVTc/8109592ec0.png
Then comes the V32E Recycle, and I have to make the 2º mark. What I do is repeat the previous procedure by marking the Y-axis again.
https://puu.sh/CBVW3/f1f9229c69.png
https://puu.sh/CBVYe/1314b09d4d.png
Then when the V32 Recycle comes, I rotate the AOT to the of the spiral angle in R2, I ajust the spiral precisely to the star an Mark for the 3º time. Then I load the new angle of the spiral in the AGC (R2).
https://puu.sh/CBVZ9/55cc737904.png
https://puu.sh/CBW2u/ece30abab3.png
https://puu.sh/CBW5P/3a70764dfc.png
https://puu.sh/CBW7o/7e4191c666.png
Then I do the same for second star I can find, that is accepted by the AGC.
https://puu.sh/CBWeK/69106d0eee.png
https://puu.sh/CBWqj/45d082a653.png
and so on….
Of all attempts, with this procedure I was able to get better values, at least I think so. Is this procedure correct?
https://puu.sh/CBWtv/fc908aaf34.png
https://puu.sh/CBWwA/d5a2874da9.png
https://puu.sh/CBWxo/12122d8137.png
https://puu.sh/CBWy3/fff2b6e9fa.png
In the surface alignment it is indifferent to mark with Q (X) or Y (Y), right?
I also noticed that some of the stars we chose to do the alignment, make the AGC PROG light to turn on, and also that works better with the stars that are in the detents 1 (L), 2 F), and 3 (R). Can you give me some help/tips?
Thanks
Last edited: