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31.CMT
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Text File
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1989-03-22
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2KB
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67 lines
*** BEGIN TUTORIAL # 3-1 ***
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Tutorial # 3-1 covers liftoff from the moon and orbit circularization
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LV position relative to the OL is displayed prior to liftoff
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The OL is just passing overhead
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Liftoff occurs when the OL is 10° west of the LV
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Three minutes to liftoff
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LV propellant supplies are 45% .. RCS propellant is 90%
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Two minutes to liftoff
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The LV is carrying 50kg of rock
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One minute to liftoff
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Ten seconds before liftoff, absolute position mode is selected
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*** ASCENT AUTOPILOT START ***
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*** LIFTOFF FROM THE LUNAR SURFACE ***
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The ascent autopilot first pitches the LV forward by 45°
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Pitch program complete
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Next, the autopilot increases the main engine throttle to 100%
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Main engine throttle is 100%
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The autopilot controls the pitch angle to take the LV into a 20km orbit
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The DSN transponder is automatically switched on
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Liftoff plus 1min 30s: 11km altitude, 0.6° (18km) west, 520m/s west velocity
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Liftoff plus 2min: 17km altitude, 1.2° (36km) west, 780m/s west
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The LV propellant supply is 27%
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Liftoff plus 2min 30s: 19.5km altitude, 2.2° (65km) west, 1100m/s
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Liftoff plus 3min: 19.9km altitude, 3.4° (100km) west, 1400m/s
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*** MAIN ENGINE CUTOFF ***
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The LV is at 19.9km altitude, westward velocity is 1674.8m/s
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Remaining propellant is 17-18%
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Orbital parameters are displayed to check the orbit
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The burn was a bit too hot!
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The 18.8x38.2km orbit will not be corrected, since that would waste fuel
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The LV is about 15° east of the OL and slowly gaining on it
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This concludes TUTORIAL # 3-1 .. the mission continues with TUTORIAL # 3-2
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999999