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Apollo 13 Moments of Interest / 141:07:48 Retro informs Flight that 13 is in the incorrect attitude for LM sep
« on: April 15, 2020, 06:13:44 pm »
https://apolloinrealtime.org/13/?t=141:07:48&ch=50
Retro tells Flight that the spacecraft is rolled 90 degrees out from where it was needed. Because Flight had previously told Lovell that yaw was not important due to the difficulty in attaining this attitude without approaching gimbal lock ( @ 140:55:46 ), and that the LM hatch was probably already closed and it would take too long to re-open, the decision was made to leave attitude as it was.
According to the link below, this error may actually have saved the spacecraft from entering gimbal lock, which nearly happened very shortly after LM separation.
https://www.universetoday.com/120124/13-more-things-that-saved-apollo-13-part-13-jim-lovells-90-degree-wrong-turn/
Retro tells Flight that the spacecraft is rolled 90 degrees out from where it was needed. Because Flight had previously told Lovell that yaw was not important due to the difficulty in attaining this attitude without approaching gimbal lock ( @ 140:55:46 ), and that the LM hatch was probably already closed and it would take too long to re-open, the decision was made to leave attitude as it was.
According to the link below, this error may actually have saved the spacecraft from entering gimbal lock, which nearly happened very shortly after LM separation.
https://www.universetoday.com/120124/13-more-things-that-saved-apollo-13-part-13-jim-lovells-90-degree-wrong-turn/