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Old 11-24-2007   #33 (permalink)
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Janus
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Re: Landing video

As promised, here is the landing stage of the mission.

I picik the mission up at an altitude of 200 km and then procede with a gravity turn landing. I use a retrorocket package to kill most of the lander's velocity, which sparates away at about 8 km altitude, where the lander's egines take over. I did this because I needed a fairly powerfull engine to kill the velocity, but it was easier to land with smaller engines with finer control.

The little jump you see at separation is the veiwpoint shifting focus from the retro stage to the lander. I haven't quite figured out how to eliminate it.
The video also ends just a split second before actual touchdown. That's a post-production error that I missed.


Landing point is 2°E 1.25°N. On the Eastern edge of Sinus Medii (Central Bay), about 30 km East of Blagg crater. Just about smack dab in the middle of the nearside of the Moon.

From the point of ignition of the transfer booster to lunar touchdown the mission takes 4 days, 1hr, 7 sec. Date of launch chosen was Jan 30, 2008.



----------------
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