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14.CMT
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1986-11-17
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****** 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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The LM is 28.7° east of the landing site at an altitude of 20.4 km
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..falling at 8 m/s and moving westward at 1689 m/s.
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Three minutes to PDI.
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The LM is 0.07° south of the landing site moving north at 8 m/s.
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The LM orbit is 19.4 by 99.4 km.
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Two minutes to PDI.
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A one degree ROLL is performed to properly orient the LM
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..so the Left-to-South angle is zero.
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One minute to PDI.
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The LM is at an altitude of 19.5 km falling at 3 m/s
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..and moving westward at 1690 m/s.
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The RCS throttle is set to HIGH.
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The AUTOPILOT is turned on at 18° (540 km) east of the landing site.
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*** POWERED DESCENT INITIATION ***
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The Descent Autopilot first increases the Descent Engine throttle to FULL.
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After reaching full throttle, the Autopilot adjusts both the pitch angle
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..and Descent Engine throttle to bring the LM to the landing site
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..using a minimum amount of propellant.
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About 2 min 30 s after PDI
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..the Autopilot begins to decrease the Descent Engine throttle.
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The LM is at an altitude of 17.5 km and falling at 27 m/s.
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The westward velocity is 1230 m/s.
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The LM is 9.3° (280 km) east of the landing site.
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The RCS LEFT and/or RIGHT thrusters are used as required
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..to adjust the north/south position and velocity.
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The RCS LEFT thruster slows the northward LM velocity.
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The RCS is used during Powered Descent
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..to keep the north/south velocity component below 1 m/s or so.
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The Landing Radar is turned on at an altitude of 12,000 m.
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The Landing Radar is on.
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It operates reliably when the altitude is below 9000 m.
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The LM is at an altitude of 10.6 km and falling at 45 m/s.
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The westward velocity is 735 m/s.
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The LM is 3.8° (115 km) east of the landing site.
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The LM is at an altitude of 7.9 km and falling at 43 m/s.
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The westward velocity is 580 m/s.
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The LM is 2.5° (75 km) east of the landing site.
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The Descent Engine propellant supply is 44%.
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The Deep Space Network transponder (DSN) is turned off at 6000 m.
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The DSN transponder is off.
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The LM is at an altitude of 5.2 km and falling at 37 m/s.
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The westward velocity is 435 m/s.
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The LM is 1.5° (45 km) east of the landing site.
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The Descent Engine propellant supply is 38%.
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The LM is at an altitude of 2500 m and is falling at 28 m/s.
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The westward velocity is 275 m/s.
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The LM is 0.6° (19 km) east of the landing site.
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The Descent Engine propellant supply is 31%.
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Manual control resumes when the LM altitude falls below 1000 m.
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Manual control should NOT be assumed during a pitch maneuver.
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The INS displays the landing site distance in meters.
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The LM is under manual control.
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The Descent Engine throttle increases to slow the rate of descent.
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Down at 6 m/s.
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The Landing Radar displays a Level 2 map.
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Down at 3 m/s.
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The LM is 1100 m east of the landing site.
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The LM is pitched forward to slow the eastward deceleration.
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Altitude is 350 m.
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The LM is pitched upright.
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Further horizontal velocity corrections use the RCS thrusters.
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The RCS throttle is set to MEDIUM.
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Down at 4 m/s.
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Altitude less than 200 m ... The velocity indicators are active.
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Altitude is 100 m.
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Down at 2 m/s.
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Descent Propellant 13%.
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LM altitude less than 10 m.
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*** !!! CONTACT !!! ***
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The LM landed 659 m east and 49 m south of the goal.
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The landing score was 81, for a total score so far of 16.
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This concludes TUTORIAL # 1-4 ... The mission continues with TUTORIAL # 2-1.
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999999