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Yeah, typo on my part. I meant LOPC-1. Thanks for the explanation, changing the plane for photo coverage makes sense. And I forgot about the shape burn being for the subsatellite orbit, we did it on A15 but for some reason I was thinking it had something to do with setting up for TEI. And now...

Hi. Just completed the Apollo 16 flight, almost 50 years exactly from the actual mission. Casper is bobbing safely in the warm Pacific waters. I had a few questions about two maneuvers that were scheduled on the original Apollo 16 flight plan but were later scratched: LOPC-2 and the Shape burn...

Thank you. I realize you guys are pretty busy answering questions (I see others working on Apollo 12 and Apollo 10) so I appreciate your time. I'm trying to keep my question/maneuver ratio as low as possible.

I tried two aborts, one using the PNGS and one using the AGS. This might turn out to be fun..... As a starting point I picked a time right after P64 pitchover. I only did one of each so it's a small sample size, but few questions: The PNGS abort resulted in an orbit 9.9 x 67.4 which seems to...

I did a V47/337+xxxxx to update the time, and that combined with the correct CSM SV (designating the TGT as Casper in the RTCC) did the trick, the V83 and 373/440 values sync up. Not sure what happened to the AGS time, I'm 99% sure I did that correctly when I first initialized the AGS after...

I did V47/414+10000E, that should update the AGS, correct?

Yeah, I thought I knew how to do this, I didn't have a problem on 15. I think I messed up the TGT, I probably had Orion vs. Casper. But with Casper as the TGT V83 gives me values now that seem reasonable. But the AGS 317R and 440R don't match up, so I'll have to go back and see what I did wrong...

First the good news, Orion has landed safely at Descartes. The procedural guidance that you all provided for the Apollo 15 flight I did served me well once again, so thanks. But a few questions: I've been trying to work more on the AGS procedures, but I hit an early snag when I'm asked to load...

Just completed the LOI-1 burn. The good news is the orbit is 170 x 59, and appears to pass over Descartes. But a few things that I have questions about.... When I calculated MCC-4, my PAD attitude had my yaw at 283 degrees, which would have put me into a gimbal lock situation. I wasn't sure...

I'm in the early stages of the Apollo 16 mission, running the RTCC calculations for MCC-1. Another learning opportunity presents itself. I'm using Option #4. The initial calculation comes up with a 7 fps maneuver, but it gives me an LOI burn time of 74:56:35. The Flight Plan shows LOI at...

I re-did the MCC-7 P30 uplink using retrofire, and yes I messed that up originally, as you promised everything went much better after inputting correct data (go figure). A few more questions that cropped up as I went through the re-entry.... On the Entry Checklist pg 1-5, with the system test...

OK, I think my 2 watt light just came on. On page E 2-2, step 7 "Verify Horizon Check Attitude". I've been mistaking that for the actual check. All I should have done there was confirm the attitude, the horizon check is later (EI -17 as you point out). A case of RTFC (Read The effing Checklist)...

I may have messed this up, this P30 was for MCC 7? I think I did External dV, not Retrofire. I'll re-check that. Yes, I'm looking at the correct line. My confusion is still when I should be seeing the horizon (In spite of your good explanation). The entry checklist has us look at this about 25...

I've run three re-entries, each with it's own varying levels of success and failure. The first attempt started ok, but the CM started to lift and initially tried to roll, but then abandoned the roll for some reason and ended up with a huge skip, and splashdown was off the west coast of Mexico...

Hmmm.....ok, that's what I did. I probably don't understand the procedure. At about 293:38 on the flight plan we're supposed to maneuver to the "horizon check attitude". The Entry PAD HORZ check pitch is 268 degrees, so I V49'd to 000, 268, 000. But the PAD time of the check is 294:40:37...

Could you walk me through using the RTCC to generate the Entry REFSMMAT? My reentry SXTS check and HORZ check are not close, and I suspect I uplinked a bad REFSMMAT. Thanks.

I fully expected to be making a big burn here. This being my first time calculating the TEI with the RTCC, I had some doubts that the TEI had me headed towards Earth, so I'm glad to know I'm headed in the right direction.

Thanks for checking.

OK. Printed out the Return-to-Earth Targeting section, did the highlight and underline thing, dove into the RTCC and came up with some results. But not sure if they're good results. Starting with TAR>ENT>AST, under TYP I'm using "Unspecified", SIT is FCUA, entered my MCC5 burn time (I used...

I've tried to figure out how to calculate MCC-5 on my own, but no luck. The RTCC Input Reference Guide (under TEMCC) refers to steps TAR>ENT>RTE>TIG but on the RTE page I don't see any way to enter the TIG. Also it indicates I should select TYP> Corridor Control, and I couldn't find that either...