Zuppermati
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- Joined
- Feb 16, 2020
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Hello everyone
I'm currently at T+76:05:00 in Apollo 8, when you're supposed to perform a P22 on site B-1. However I'm really struggling to understand what am I supposed to do (or better, to understand if I'm doing it right).
Basically: at the time of P22 you're supposed to roll to ORDEAL roll = 0, pitch = 5 and yaw = 0. By setting the trunnion to 10 degrees as required, you are basically pointing at the moon horizon, correct? At the same time, you are required by the checklist to keep a pitch rate so that you are always pointing to the horizon, correct? (by the way: is there any noun for verb 16 which allows you to display the exact ORDEAL angles?)
Ok: at this point, after the whole P22 initialization, the checklist mfd tells me to "Identify the landing site B-1 at acquisition time". I suppose it means to wait till the site appears from the horizon (which can be seen by using the display function). Correct? Now what puzzles me is the next point of the checklist: "Evaluate lighting between landing site and terminator": just what on earth am I supposed to do?
Anyway: if I skip it, the next step is to go OPT MODE - CMC and hit PRO: at this point, from what I get, the optics should start tracking the site and the checklist tells me to "Evaluate auto-optics tracking of the landing site B-1". The issue is that I don't know if it's doing a good job or not: from what you can see in this image its not perfectly centered (notice that I zoomed a lot on that image), so I don't know how to evaluate it.
At the same time I'm puzzled about the fact that according to the official CMP checklist, at page 17, it talks about performing a serie of MARKs when v51 is shown but both dsky and the checklist mfd doesn't mention it anywhere.
So the thing is: am I doing this right? Regards.
I'm currently at T+76:05:00 in Apollo 8, when you're supposed to perform a P22 on site B-1. However I'm really struggling to understand what am I supposed to do (or better, to understand if I'm doing it right).
Basically: at the time of P22 you're supposed to roll to ORDEAL roll = 0, pitch = 5 and yaw = 0. By setting the trunnion to 10 degrees as required, you are basically pointing at the moon horizon, correct? At the same time, you are required by the checklist to keep a pitch rate so that you are always pointing to the horizon, correct? (by the way: is there any noun for verb 16 which allows you to display the exact ORDEAL angles?)
Ok: at this point, after the whole P22 initialization, the checklist mfd tells me to "Identify the landing site B-1 at acquisition time". I suppose it means to wait till the site appears from the horizon (which can be seen by using the display function). Correct? Now what puzzles me is the next point of the checklist: "Evaluate lighting between landing site and terminator": just what on earth am I supposed to do?
Anyway: if I skip it, the next step is to go OPT MODE - CMC and hit PRO: at this point, from what I get, the optics should start tracking the site and the checklist tells me to "Evaluate auto-optics tracking of the landing site B-1". The issue is that I don't know if it's doing a good job or not: from what you can see in this image its not perfectly centered (notice that I zoomed a lot on that image), so I don't know how to evaluate it.
At the same time I'm puzzled about the fact that according to the official CMP checklist, at page 17, it talks about performing a serie of MARKs when v51 is shown but both dsky and the checklist mfd doesn't mention it anywhere.
So the thing is: am I doing this right? Regards.