Question Apollo 9 LEM RR unstow

riclourenco

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hello

I am doing apollo 9 and activating the LEM. Im having trouble with this part of the checklist, and I am not sure if i am doing it correctly:

https://puu.sh/BvB4a/435293bd67.png

How do i do the RR unstow ??
In the part referring to "slew left 18sec to mode 1", i presume i have to use the "Slew" button (where my mouse's arrow is), but I cant figure out what is " to Mode one" .

Thank you

Riclourenco
 
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rcflyinghokie

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I am doing apollo 9 and activating the LEM. Im having trouble with this part of the checklist, and I am not sure if i am doing it correctly:

https://puu.sh/BvB4a/435293bd67.png

How do i do the RR unstow ??

Unstowing the RR is just moving it from it's stowed position, so the steps to slew the RR after that "unstow RR" accomplish it.

In the part referring to "slew left 18sec to mode 1", i presume i have to use the "Slew" button (where my mouse's arrow is), but I cant figure out what is " to Mode one" .

You are correct, you slew left for 18 seconds and that will bring the RR into the Mode I range. Mode I is essentially the RR facing forward, allowing the LM to track the CSM while looking at it face on. Mode II is facing up/back so the LM could track the CM in an orientation other than face on (like a burn orientation or ascent from the surface.

Hope this helps!
 

riclourenco

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Thanks for your answer, I'm still a newbie :).
I was able to do the checklist in time for the first burn with the LEM in apollo 9, but near the ignition the RCS are not activated and the LEM engine does not fire when the time comes. Can someone tell me what might be wrong?

Thank you
 
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