xmm operations

M. Kirsch, M. Kirsch, XMM-Newton XMM-Newton European Space Operations CenterEuropean Space Operations Center

ESOCESOCESOCESOC

XMM Operations XMM Operations

Marcus G. F. Kirsch Marcus G. F. Kirsch

with Inputs from the Flight Control Team at ESOCwith Inputs from the Flight Control Team at ESOC

European Space Agency (ESA)European Space Operations Centre (ESOC)

March, 2010March, 2010


ESOCESOCESOCESOCmenumenu

• Spacecraft status & mission performanceSpacecraft status & mission performance

• Special eventsSpecial events

• OutlookOutlook


ESOCESOCESOCESOCsolar arrayssolar arrays• power generation capabilities are normal. power generation capabilities are normal. • No sign of unexpected degradation visibleNo sign of unexpected degradation visible

Actual

Prediction before launch


ESOCESOCESOCESOCcurrent fuelcurrent fuel

0

100

200

300

400

500

600

time

fuel

[kg]

Remaining fuel 76. [kg]

Consumption last 12 month

5.1 [kg]

average fuel consumption

(since 2003-03-01)

0.48 [kg/month]

residual lifetime in month

118 [-]

extrapolated milageSept 2019


ESOCESOCESOCESOCbatteriesbatteries

Batteries have just been reconditioned the 3rd timeand have approx. same capacity as at launch

XMM-Newton Battery 1 & 2 Parametersmax DOD/ min EOD Volts vs. Season

36.50

37.00

37.50

38.00

38.50

39.00

39.50

Aut

umn

2002

Spr

ing

2003

Aut

umn

2003

Spr

ing

2004

Aut

umn

2004

Spr

ing

2005

Aut

umn

2005

Spr

ing

2006

Aut

umn

2006

Spr

ing

2007

Aut

umn

2007

Spr

ing

2008

Aut

umn

2008

Spr

ing

2009

Aut

umn

2009

Spr

ing

2010

Season No [-]

EO

D V

olt

age

[V]

10.0

15.0

20.0

25.0

30.0

35.0

40.0

DO

D [

%]

Bat 1 EOD Voltage Bat 2 EOD Voltage Bat 1 DOD Bat 2 DOD

Reco Autumn 2003 Reco Autumn 2007 Reco Autumn 2009


ESOCESOCESOCESOCLCL statisticsLCL statistics

5 2

2010:- Heater of RW1 OFF- Transponder 2 ON


ESOCESOCESOCESOCSpacecraft/mission statusSpacecraft/mission statusMoneyMoney Funded untilFunded until

next extension requestnext extension requestEnd 2010End 2010in 2010in 201020142014

FuelFuel remainingremaining

Use per yearUse per year

Mileage leftMileage left

76 kg76 kg 6 kg 6 kg20192019

Solar array powerSolar array power Maximum requiredMaximum required

Current marginCurrent margin

Margin end of 2018Margin end of 2018

1350 W1350 W

550 W550 W

350 W350 W

Battery Battery According to UHBAccording to UHB 15+ y15+ y

Gyros/(IMUs)Gyros/(IMUs) UsageUsage < 20 %< 20 %

Reaction wheelsReaction wheels UsageUsage < 37 % < 37 %

RF switchesRF switches

Transponder switchesTransponder switches

UsageUsage Stuck at one position Back up not Stuck at one position Back up not used instead transponders are used instead transponders are switchedswitched

TX A LCL switches 227 TX A LCL switches 227 TX B LCL switches 243 TX B LCL switches 243 (Qualified to 25000)(Qualified to 25000)


ESOCESOCESOCESOCG/S maintenanceG/S maintenance• Heavy G/S maintenance 2009 in July, August, November and December: Heavy G/S maintenance 2009 in July, August, November and December: 4/6 month4/6 month• Nominal revolutions: only 46/93Nominal revolutions: only 46/93• Lots of additional late requests for G/S maintenance requires manual Lots of additional late requests for G/S maintenance requires manual action of FCT also outside working hoursaction of FCT also outside working hours

Worst case: rev 1832

Number ofHandovers per Revolution

0123456789

10

Revolution

HE2B launch

KRU full and partialt d/t

Ariane 5 Flight 192 tracking

PER full and partialt d/t


ESOCESOCESOCESOCdata recoverydata recovery

March 21


ESOCESOCESOCESOCmission performancemission performance

Mission Performance Figures

60.0

65.0

70.0

75.0

80.0

85.0

90.0

95.0

100.0

2003

2004

2005

2006

2007

2008

2009

2010

2011

Year

Eff

icie

ncy

[%

]

pn RGS MOS

minumum required

Performed science /scheduled science

Numbers collected from SOC page


ESOCESOCESOCESOCeclipse 2009 Julyeclipse 2009 July• 05-21/07/0905-21/07/09• max. discharge duration: max. discharge duration: 01h13m11s01h13m11s• Max. Depth of Discharge: 24.0 % (100%=35Ah)Max. Depth of Discharge: 24.0 % (100%=35Ah)

fully nominalfully nominal


ESOCESOCESOCESOCtank1 thermostat failuretank1 thermostat failure• Indicator:Indicator: After July Eclipse #4: After July Eclipse #4: DP TM TD057 (tank temps. range) OOL HH (10.41) DP TM TD057 (tank temps. range) OOL HH (10.41) Reason: tank 1 temperatures lowReason: tank 1 temperatures low

–T6072 (TH L TANK 1 TOP) : 22.5T6072 (TH L TANK 1 TOP) : 22.5–T6073 (TH L TANK 1 EXT): 21.25T6073 (TH L TANK 1 EXT): 21.25These temperatures have never been lower than 24.5 degC before!These temperatures have never been lower than 24.5 degC before!

•Assumption:Assumption: LTP thermostat LTP thermostat not closing properly not closing properly•Cure:Cure: TSWTSW, connected in parallel to LTPT is closed with time tags: cycle , connected in parallel to LTPT is closed with time tags: cycle pattern: 3h35m closed, 38m open pattern: 3h35m closed, 38m open this guarantees a temperature range this guarantees a temperature range of of T1 EXTT1 EXT of 27-28 degC and a temp delta between all tanks of < 5 degC of 27-28 degC and a temp delta between all tanks of < 5 degC (Note: average temp in 2009 with working LTP was 27.5 degC)(Note: average temp in 2009 with working LTP was 27.5 degC)

• why not to redundant LTP:why not to redundant LTP:– other units would have been as well effected (STR, OM)other units would have been as well effected (STR, OM)– lower (4 deg) temperature range lower (4 deg) temperature range need to change all other tanks as well to redundant heaters need to change all other tanks as well to redundant heaters (do big temperature deltas) (do big temperature deltas)

• why not HTP:why not HTP:– higher temperature range higher temperature range need to change all other tanks as well to redundant heaters (do big need to change all other tanks as well to redundant heaters (do big temperature deltas) temperature deltas)

Tank1 TopTank1 Ext

Tem

pera

ture

[de

gC]

Time [month as of 01/2009]


ESOCESOCESOCESOCMCS upgradeMCS upgrade

• Current status:Current status:– H/W: EoSL: 2011H/W: EoSL: 2011– S/W: OS Solaris 8 (End of support date March 2012) S/W: OS Solaris 8 (End of support date March 2012)

S2K3.1 M-05S2K3.1 M-05

– Options for evolution (currently under study)Options for evolution (currently under study)– Linux SLES 11, S2K3– Hybrid (Servers Solaris, Clients Linux), S2K3– Linux SLES 11, S2K5– Virtual emulation of Solaris 8– Other combinations using virtual machines

• Tests are underway for Linux for INTEGRALTests are underway for Linux for INTEGRAL


ESOCESOCESOCESOCoutlookoutlook• short term:short term:

– LCTF REDU LCTF REDU to be upgraded and tested in April (Issue with communication to KRU to be upgraded and tested in April (Issue with communication to KRU solved)solved)

– MCS S/W release in April:MCS S/W release in April:– Flexible timeline in MCS S/W 10.2.3 – Automation of Antenna Swap process

– Refurbishment of the DCR Refurbishment of the DCR (Move in May to interim DCR, back Sept. 2010) (Move in May to interim DCR, back Sept. 2010) Impact: no Too support during the actual move(s) (2+2 days) Impact: no Too support during the actual move(s) (2+2 days)

– Eclipse 2010 01/07-15-07Eclipse 2010 01/07-15-07

• medium term:medium term:– Automation of EclipseAutomation of Eclipse procedure procedure– MUST MUST implementation implementation – Star TrackerStar Tracker: 12 blemish pixels identified. Feasibility of the Blemish pixel : 12 blemish pixels identified. Feasibility of the Blemish pixel

compensation on board is ongoing with the OBSM STR SW test campaign. compensation on board is ongoing with the OBSM STR SW test campaign. – New G/S at KourouNew G/S at Kourou (Kourou Galliot) validation (pending issues with timing (Kourou Galliot) validation (pending issues with timing

accuracy)accuracy)– G/S maintenance of PER (2-4 August) and KRU (September 2-4 May) G/S maintenance of PER (2-4 August) and KRU (September 2-4 May)

• long term:long term:– MCS evolutionMCS evolution to be decided after next extension in 2010 for implementation in to be decided after next extension in 2010 for implementation in

2011 2011 – evaluation of possibility to use auto evaluation of possibility to use auto commanding to trigger flexible timecommanding to trigger flexible time

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