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AMS.ZIP
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14.CMT
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Text File
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1989-03-23
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4KB
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143 lines
*** BEGIN TUTORIAL # 1-4 ***
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Tutorial # 1-4 covers Powered Descent Initiation (PDI)
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..through landing on the moon
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Four minutes to PDI
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The LV is 27° east of the landing site at an altitude of 21.5km
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..falling at 12m/s and moving westward at 1699m/s
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The landing radar display shows a 64:1 map between 100km and 3km altitude
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Three minutes to PDI
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The RCS throttle is set to HIGH
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Two minutes to PDI
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The LV is slightly north of the landing site
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One minute to PDI
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The LV is at an altitude of 20.1km falling at 3m/s
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..and moving westward at 1700m/s
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The descent autopilot is turned on at 15° (450km) east of the landing site
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*** POWERED DESCENT INITIATION ***
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The descent autopilot first increases the main engine throttle to 100%
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After reaching full throttle, the autopilot adjusts both the pitch angle
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..and main engine throttle to bring the LV to the landing site
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..using a minimum amount of propellant
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The LV is at an altitude of 19.6km and falling at 22m/s
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The westward velocity is 1430m/s
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The LV is 10.3° (310km) east of the landing site
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The main engine hydrogen and oxygen propellant supplies are 89%
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The LV is at an altitude of 15.2km and falling at 56m/s
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The westward velocity is 1100m/s
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The LV is 7.2° (215km) east of the landing site
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The landing radar is turned on at an altitude of 12km
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The landing radar is on
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It operates reliably when the altitude is below 9km
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The LV is at an altitude of 10.2km and falling at 60m/s
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The westward velocity is 870m/s
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The LV is 4.4° (135km) east of the landing site
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The LV is at an altitude of 8.3km and falling at 57m/s
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The westward velocity is 770m/s
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The LV is 3.4° (100km) east of the landing site
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The Deep Space Network transponder (DSN) is turned off at 6km
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The DSN transponder is off
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The main engine propellant supply is 68%
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The LV is at an altitude of 4.0km and falling at 43m/s
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The westward velocity is 560m/s
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The LV is 1.9° (55km) east of the landing site
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The landing radar display shows a 4096:1 map below 3km
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The LV is at an altitude of 2.4km and is falling at 29m/s
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The westward velocity is 440m/s
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The LV is 1.2° (36km) east of the landing site
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The main engine propellant supply is 63%
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Altitude nearing 1km, where the velocity indicators become active
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Manual control resumes when the LV vertical velocity nears 0m/s
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The LV is under manual control
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The LV is throttled down to increase the drop rate to about 6m/s
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The LV is pitched back and throttled up to slow the westward velocity
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Altitude is 600m
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Down at 6m/s
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The LV is pitched forward and throttled down
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Altitude is 400m
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The LV is upright .. horizontal velocity is controled by RCS thrusters
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Propellant is 50-51%
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LV altitude is 600m
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Eastward velocity is slowed using the forward thruster
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Westward velocity less than 1m/s
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Altitude less than 400m
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Down at 5m/s
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Down at 3m/s
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Altitude 150m, down at 2.5m/s
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LV altitude less than 100m
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LV altitude less than 30m .. picking up some dust
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*** !!! CONTACT !!! ***
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The LV landed 80m east and 4m south of the goal
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This concludes TUTORIAL # 1-4 .. the mission continues with TUTORIAL # 2-1.
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999999