Wedge313
Well-known member
Hi,
I'm running the Apollo 12 mission, and just finished MCC-1 at T+11h 48m. It was a much larger burn than I hoped to see (65.7 fps, using about 1.6% of my SPS fuel). I used option #5 in the RTCC when calculating the MCC.
I had a question about the TLI burn. Starting the burn the yaw was 001. The burn looked normal for the first 1:40, then the spacecraft began to slowly yaw to the left, until at the end of the burn the yaw was 017. I don't remember seeing this much yawing on any of the other TLIs I've run (Apollo 8,11,15,16,17,14). Is this yaw unusual, or have I just not noticed it before?
Looking ahead to MCC-2 at T+30h 52m, my expected dV looks like 2 fps (again using option #5), so it appears I'm back on an ok course. But I'm curious about the TLI yaw. Is that normal or was something done incorrectly?
Thanks
I'm running the Apollo 12 mission, and just finished MCC-1 at T+11h 48m. It was a much larger burn than I hoped to see (65.7 fps, using about 1.6% of my SPS fuel). I used option #5 in the RTCC when calculating the MCC.
I had a question about the TLI burn. Starting the burn the yaw was 001. The burn looked normal for the first 1:40, then the spacecraft began to slowly yaw to the left, until at the end of the burn the yaw was 017. I don't remember seeing this much yawing on any of the other TLIs I've run (Apollo 8,11,15,16,17,14). Is this yaw unusual, or have I just not noticed it before?
Looking ahead to MCC-2 at T+30h 52m, my expected dV looks like 2 fps (again using option #5), so it appears I'm back on an ok course. But I'm curious about the TLI yaw. Is that normal or was something done incorrectly?
Thanks