thermocalc
Active member
Hi again, this is the 2nd part of my previous post, in which I described the NAVIGATIONAL problems I faced so far to enter into lunar orbit.
1) After TLI my MCC-1 was scrubbed, I did only MCC-2 with SPS, MCC-3 and MCC-4 were also scrubbed. Is it normal?
2) When the message of MCC-4 being scrubbed came (at 069:28:20) I also got an uplink for CSM SV update and Landing Site LLS 2 refsmmat, which I changed with P52 option 1 at 070:11:00; the next MCC message was for the PC+2 maneuver pad fast return, followed by the “wait for LOI-1 update” at about 73h, which I got at 073:03:20, BUT I got only this one until the TIG more than 2 h later…did I lost another LOI-1 PAD ? in Apollo 8 there was a “preliminary” LOI-1 and a “final”, also here in A11 the MCC was supposed to generate automatically only 1 or 2 LOI-1 pads? If 2 why I got only 1?
3) And here is the real problem I got: when at time 74h we need to start P30, with the target loads as for the received LOI-1 PAD the prediction V06 N42 for Ha, Hp was far off compared with the PAD values (see “photo 6-P30 at 74h”) with a NEGATIVE periapsis…
4) When the next execution of P30 was called at around TIG -40min, no new LOI-1 PAD were uplinked and the old values were still there in P30 (TIG time, velocities,..) and the new Ha-Hp predictions were still far from the PAD values and way different from the ones received before (compare “photo 7” with “photo 7-P30 at TIG-30m”.
5) Anyway, I carried out, made the LOI-1 burn and with “horror” I saw that indeed I was wrong all times and the burn set me into a collision course with the moon surface with a negative periapsis, see “photo 8 – LOI failed”.
6) Where is the problem? I saved scenarios almost every 30 – 60 min, so if you need some scenario at some particular time in the mission just let me know, see “photo 9_MCC uplink” for the chronology of all MCC updates I received so far… have all these sceneries.
Thanks a lot for your time in reading me, and sorry for the so many questions…and split posts, if I must NOT split them please kindly let me now and it will not happen again.
PC
1) After TLI my MCC-1 was scrubbed, I did only MCC-2 with SPS, MCC-3 and MCC-4 were also scrubbed. Is it normal?
2) When the message of MCC-4 being scrubbed came (at 069:28:20) I also got an uplink for CSM SV update and Landing Site LLS 2 refsmmat, which I changed with P52 option 1 at 070:11:00; the next MCC message was for the PC+2 maneuver pad fast return, followed by the “wait for LOI-1 update” at about 73h, which I got at 073:03:20, BUT I got only this one until the TIG more than 2 h later…did I lost another LOI-1 PAD ? in Apollo 8 there was a “preliminary” LOI-1 and a “final”, also here in A11 the MCC was supposed to generate automatically only 1 or 2 LOI-1 pads? If 2 why I got only 1?
3) And here is the real problem I got: when at time 74h we need to start P30, with the target loads as for the received LOI-1 PAD the prediction V06 N42 for Ha, Hp was far off compared with the PAD values (see “photo 6-P30 at 74h”) with a NEGATIVE periapsis…
4) When the next execution of P30 was called at around TIG -40min, no new LOI-1 PAD were uplinked and the old values were still there in P30 (TIG time, velocities,..) and the new Ha-Hp predictions were still far from the PAD values and way different from the ones received before (compare “photo 7” with “photo 7-P30 at TIG-30m”.
5) Anyway, I carried out, made the LOI-1 burn and with “horror” I saw that indeed I was wrong all times and the burn set me into a collision course with the moon surface with a negative periapsis, see “photo 8 – LOI failed”.
6) Where is the problem? I saved scenarios almost every 30 – 60 min, so if you need some scenario at some particular time in the mission just let me know, see “photo 9_MCC uplink” for the chronology of all MCC updates I received so far… have all these sceneries.
Thanks a lot for your time in reading me, and sorry for the so many questions…and split posts, if I must NOT split them please kindly let me now and it will not happen again.
PC