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31.CMT
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1986-11-03
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****** BEGIN *** TUTORIAL *** # 3 - 1 ******
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Tutorial # 3-1 covers liftoff from the Moon and orbit circularization.
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The LOL is 16° east of the LM.
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Liftoff occurs when the LOL is 5° east of the LM.
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Three minutes to liftoff.
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The LM oxygen supply is 89% and the battery supply is 84%.
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Two minutes to liftoff.
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The LOL is 9.5° east of the LM.
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One minute to liftoff.
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The RCS throttle is set to HIGH.
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*** ASCENT AUTOPILOT START ***
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*** LIFTOFF FROM THE LUNAR SURFACE ***
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Pitch program start.
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INS display switched to "POS-TAR" mode.
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DSN transponder switched on.
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The Ascent Autopilot pitches the LM forward by 60°.
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Pitch program complete.
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Roll program start.
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The Ascent Autopilot rolls the LM by 180° so the Left body axis points north.
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Roll program complete.
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Liftoff plus 2 min: 7.5 km altitude, 15 km west, 300 m/s westward velocity.
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The Autopilot pitches the LM back 5° every 40 s or so until reaching orbit.
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Liftoff plus 3 min: 12.5 km altitude, 40 km west, 520 m/s west.
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The LM oxygen and battery supplies are 8%, the fraction in the Ascent Stage.
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Liftoff plus 4 min: 17 km altitude, 75 km west, 750 m/s.
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Liftoff plus 5 min: 20 km altitude, 130 km west, 1020 m/s.
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Liftoff plus 6 min: 22 km altitude, 200 km west, 1300 m/s.
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Liftoff plus 7 min: 22.5 km altitude, 290 km west, 1630 m/s.
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*** ASCENT ENGINE CUTOFF ***
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INS display switched to "ORB-ABS" mode.
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The RCS UP thruster raises the perilune to 20 km.
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Circularization burn complete ... The LM orbit is 20.7 km by 23.2 km.
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The Ascent Stage propellant is 18%.
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The LM is at an altitude of 22.7 km and is at 8.5° east longitude.
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The LM is about 7.2° east of the LOL.
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This concludes TUTORIAL # 3-1 ... The mission continues with TUTORIAL # 3-2.
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