Mro On Approach, TCM-3 not required |
Mro On Approach, TCM-3 not required |
Feb 3 2006, 11:06 PM
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#1
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Member Group: Members Posts: 134 Joined: 13-March 05 Member No.: 191 |
MRO has shifted from the cruise phase to Approach phase. Apparently, the trajectory is so good that TCM-3 was cancelled. This is good news for the prospects for a long life for MRO supporting future missions. TCM-4 is on Feb 28, and MOI on March 10. Only 5 weeks away!
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Mar 10 2006, 11:03 AM
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#2
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Newbie Group: Members Posts: 18 Joined: 12-February 04 Member No.: 28 |
I don't think the small one is live - at least, it hasn't changed in some minutes.
The discontinuity was labelled 'DSS 15 Handover' - I suppose this is when the DSN reception is being passed from one dish to the next. Due to the rotation of the Earth, any given dish will have some additional velocity towards Mars as it (Mars) appears above the horizon; When Mars sets, the DSN dish is moving away from Mars at a similar velocity. This means that the DSN station doppler is added to the MRO doppler; the DSN doppler is at its strongest, but in opposite directions, at handover. Anyway, that's my take on it. --Martin |
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Lo-Fi Version | Time is now: 16th June 2024 - 02:36 PM |
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