D. Williams, F. Auchère, S. Wallace, T. Grundy, R. Perry.
CMS ops
Currently executing on board is STP-187, in the three-month period known as LTP06, the first of the Nominal Mission Phase.
LTP-05, the prior long-term planning period, came to an end on .
Since the last meeting on , payload has continued observing the Sun in a more or less "synoptic" way after the Earth GAM, with an interruption between and for the re-partitioning of the Solid State Mass Memory, as well as for updating the software that controls it.
Anomalies (if any)
None affecting SPICE/CMS.
CMS data and interpretation
See IAS CMS data tool
Operations times shown for CMS since the last meeting.
WOL, TCM and MAINT (EGAM itself; Thrusters firing 2021-11-27T04:04:00 – 05:18:00) – AI: pointing needs investigation to discount optical / thermal effects, also to look at the heater operations across the platorm around the MAINT window itself.
MAG Calibration Rolls (2021-12-02T01:44 – 12:02) - longer period variation than just from the rolls themselves. Need to pull out the parameters that show roll around X for comparison.
TCM at EGAM+1 week (2021-12-03T07:18 – 07:50). Substantial on-time of thrusters, so it's of interest to examine the post-manoeuvre levels on CMS-1 & 2.
Seems like CMS-2 held steady, and that the CMS-1 drift was real because of non-held temperature.
No special platform event – is it of interest to make these observations more often? (moved earlier because SPICE wanted to observe at the originally indicated time).
No special platform event (SSMM software update so not usual operations) No need to make them regularly: but these are an intersteting data set for showing stability of the measurements in the absence of other effects.
• CMS operations to be performed weekly, capturing interesting events where possible. • CMS Operator should switch on CMS ≥30 minutes earlier than the time at which the observations would start, particularly if the observations to catch (for example) a WOL would need to start at midnight. CMS operations in SOOP Kitchen are timed such that they start 30 minutes after assumed switch-on. • Note that From LTP04 onwards (i.e., starting from STP-154), SOC has not been indicating CMS operations in the EFECS with an RSW_EXT_SPICE. They will still be indicated with CMS “observations” in the LTP plan however.
For MAINT-ANY windows, since FCT can do ANYTHING in that window, it's good practice to observe right through (and for any adjoining WOLs + TCMs).
Future operations:
Already planned
Upcoming planned CMS Ops:
LTP-06 runs until the beginning of April (beyond the Remote Sensing Windows)
WOL: 2022-01-31T00:05:00Z – 2022-01-31T03:05:00Z
No special event: 2022-02-06T19:00:00Z – 2022-02-06T19:00:00Z
SA rotation: 2022-02-12T23:00:00Z – 2022-02-13T02:00:00Z
WOL + TCM: 2022-02-14T00:05:00Z – 2022-02-14T09:15:00Z
SA rotation: 2022-02-18T00:00:00Z – 2022-02-18T03:00:00Z
The long-term trend of deposition will be updated here each month.
Deposition / (ng / cm2)
In addition, the CMS sensor temperatures and Solar Array temperatures: (ºC)
AOB?
N/A.
Next meeting
Unless there is an ad-hoc request to have another meeting in 2021, we could meet next in January
Proposal for 17:00 CET.
Action Items
New AIs arising from this meeting in bold.
AI-12: MS to provide CMS1 & CMS2 FoV Open (DW will ask MS) important for next VGAM AI-13: David Williams to investigate SWA temperatures 28th Jan – Open AI-16: OE will contact Airbus to see what inputs they need from CMS and SOC to compare with their thermal model Contacted ADS: Awaiting an answer when the responsible person is back from holidays. AI-25: Rad and Orcun to take a look at the TGA data when possible, and compare with previous TGAs.
AI: pointing needs investigation to discount optical / thermal effects, also to look at the heater operations across the platorm around the MAINT window itself.
