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33.CMT
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1986-11-17
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****** BEGIN *** TUTORIAL *** # 3 - 3 ******
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Tutorial # 3-3 covers orbit circularization and transition to stationkeeping.
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The LM is within 10 km of the LOL.
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The LOL transponder is turned on until the LM passes the LOL.
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The LM is pitched back to maintain the proper orientation.
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The LOL transponder is turned off as the LM nears the LOL.
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The LM passes the LOL.
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The circularization burn takes place when the LM is 1 km east of the LOL.
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*** ASCENT ENGINE ON ***
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*** ASCENT ENGINE OFF ***
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The LOL transponder is turned on and the DSN transponder is turned off.
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The LM is put into the proper orientation for transition to stationkeeping
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..with the Up body axis facing south and the Face body axis vertical.
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Yaw program start.
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Yaw program complete.
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The RCS BACK thruster slows the relative altitude rate to 2 m/s.
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The RCS ROLL command keeps the Face body axis within 5° of vertical.
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The LM is a little over 1 km from the LOL.
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The RCS LEFT thruster sends the LM toward the LOL at about 1 m/s.
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The LM vertical motion is slowed using the RCS BACK thruster.
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The vertical motion is stopped as the LM reaches the correct altitude.
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The approach is slowed as the LM reaches the stationkeeping position.
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The LM westward motion is stopped using the RCS RIGHT thruster.
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The RCS throttle is set to "LOW".
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The LM is now on station, due north of the LOL at a distance of 440 m.
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This concludes TUTORIAL # 3-3 ... The mission concludes with TUTORIAL # 3-4.
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