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18/01/2007 MetOp A - IASI FM2 : AR 6487 1 Power consumption.

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Presentation on theme: "18/01/2007 MetOp A - IASI FM2 : AR 6487 1 Power consumption."— Presentation transcript:

1 18/01/2007 MetOp A - IASI FM2 : AR Power consumption

2 18/01/2007 MetOp A - IASI FM2 : AR Power consumption

3 18/01/2007 MetOp A - IASI FM2 : AR èThe power consumption determined with the in orbit HK is consistent with ÔThe optical vacuum results (IA-AR AER) ÔThe IASI /METOP ICD (MO-IC-MMT-IA-0001, Issue 7) Power consumption

4 18/01/2007 MetOp A - IASI FM2 : AR èThe heater lines of IASI are composed of : Ô14 ATC lines for the thermal control of the instrument Ô6 decontamination lines for the 300 and 200K decontamination of the radiator Ô5 deployment lines for the CD, CCFD and LFDs deployment èNote : ÔThe decontamination and deployments lines can not be switched on together ÔThe decontamination lines are activated in the “Heater 1 Decontamination” mode in conjunction with the ATC (Warm-Up targets) ÔThe deployment lines are activated individually (i.e. one by one) in the “Heater 1 deployment” mode in conjunction with the ATC (Warm-Up targets) ÔFor all the higher modes, the ATC lines are activated in conjunction with the equipment switch on, at operational targets. èThese lines are driven thanks to hardware automatons (one for the ATC, one for the Decontamination or Deployment activities) Thermal lines activation

5 18/01/2007 MetOp A - IASI FM2 : AR An HW automaton drives sequentially the heater 1 Hz

6 18/01/2007 MetOp A - IASI FM2 : AR An HW automaton drives sequentially the heater 1 Hz

7 18/01/2007 MetOp A - IASI FM2 : AR ATC Thermal lines Impedance Decontamination Thermal lines Impedance

8 18/01/2007 MetOp A - IASI FM2 : AR èIt is possible to establish the ripple on the EQPWR bus by injecting in the thermal simulation model the PWM and voltage acquired in the HK (4/11/06 09:37)

9 18/01/2007 MetOp A - IASI FM2 : AR èEQPWR Ripples simulation data for the Heater 1Warm-Up & Heater 1 Decontamination are : ÔHeater 1 Warm-Up : 7.3 A ÔHeater 1 K : 10.3 A ÔHeater 1 : 7.6A èFor the higher modes, combination of the simulated ripple of the heater lines and ripple measured during AIT activities allow to establish the following table (ripple at frequency 1, 4.8 and 1/8 Hz): IASI Deviation Request (IA-DR AER) is updated ÔTo integrate the ripple in decontamination mode (300K) ÔTo update the ripple value for other modes


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