Author Topic: Chang'e-4 lunar probe and rover - CZ-3B- XSLC - December 7, 2018 (18:23 UTC)  (Read 102209 times)

Offline Phillip Clark

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A very interesting on-line piece by Scott Tilley:

https://skyriddles.wordpress.com/2018/12/13/eating-static-from-the-moon/amp/?__twitter_impression=true

Obviously I am hoping that there's nothing wrong with Chang'E 4 and that there is another reason for the apparent silence from the spacecraft.

(This was brought to my attention by Andrew Jones.)
I've always been crazy but it's kept me from going insane - WJ.

Offline Blackstar

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Offline Liss

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Well,
if we are to land at 178E on Jan 3, seeing the CE-4 orbit edge on,
and if we are to do LOI on Dec 12, three weeks before, notwithstanding why such a timeline was selected,
we should see the orbit now in the face on position.
Just a simple geometry.

This message reflects my personal opinion based on open sources of information.

Offline Phil Stooke

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Absolutely right!  Speaking in approximate terms for simplicity, the moon rotates 90 degrees each week.  At the time of orbit entry the orbit is seen face  on (perpendicular to the orbit plane), a week later edge on, a week later face on, and one more week, edge on again, in time for landing.

Online Satori

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New thread for the lunar operations of the Chang'e-4 mission is now at https://forum.nasaspaceflight.com/index.php?topic=47004.msg1889729#new

 

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