1 EOS Aqua Mission Status at AMSR Science Team Meeting September 16, 2015 Huntsville, Alabama Bill Guit Aqua/Aura Mission Director - Code 584 phone 301-614-5188.

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Presentation transcript:

1 EOS Aqua Mission Status at AMSR Science Team Meeting September 16, 2015 Huntsville, Alabama Bill Guit Aqua/Aura Mission Director - Code 584 phone fax

2 AMSR Science Team Meeting Topics 9/16/2015 Mission Summary Spacecraft Subsystems Summary Propellant Usage & Lifetime Estimate

3 EOS Aqua Mission Summary (Updates since September 2014 Meeting in Huntsville) 05/04/2002: Launch ̶ 6-Year Design Life 12/02/2008: End of Prime Mission Review 01/21/2015: FOT Annual Review #8 03/03/2015: Senior Review Proposal #5 –Reliability Estimates thru 2022 –Consumables through /04/2015: Aqua 13-Year Anniversary 06/22/2015: 2013 Mission Extension Senior Review Proposal Panel Report –#1 Ranked Earth Science Mission –Mission extension through FY19 9/16/2015AMSR Science Team Meeting

4 Aqua Spacecraft Subsystems Command & Data Handling (CDH) – Nominal –Solid State Recorder (SSR) – only holds 2 orbits of data –SSR Ops Error Anomaly (12/2/07) – fully recovered 1/28/09 Communications (COMM) – Nominal Electrical Power System (EPS) – Nominal –Array Regulator Electronics (ARE) 4A (9/8/04 – self-recovered) »Re-occurred 1/11/10 and 7/18/13 (3 strings) –ARE-6C (3/1/13) – post-anomaly investigation indicated 10/20/11 also »Numerous power drops with last on 2/10/15 (5 strings) –Previous ARE Anomalies: ARE-1C (11/8/10 – 1 string) & ARE-3A (2/14/12 – 1 string) –NEW: ARE-4C (4/26/15) – First occurrence (1 string) »Estimated that Aqua has lost 11 strings of solar cells out of a total of 132 strings »Aqua continues to have significant power margin where the life limiting item is fuel –Battery Cell Anomaly (9/2/05) –Solar Panel #8 Thermistor #6 Failure (8/3/09) –Solar Array Offset (Reported 11/17/09, Corrected 6/29/10) Flight Software (FSW) – Nominal Guidance, Navigation & Control (GN&C) – Nominal Propulsion (PROP) – Nominal –Dual Thruster Module (DTM-2) Heater Anomaly (9/8/07) Thermal Control System (TCS) – Nominal All subsystems configured to primary hardware Changes since September 2014 Meeting in blue 9/16/2015AMSR Science Team Meeting

5 Fuel Usage: Actual & Predicted (Updated September 2014) Fuel Reserved to safely exit constellation, lower perigee and meet Agency 25-year reentry requirement is approximately 28.4 kg Aqua spacecraft has sufficient fuel to maintain its current orbit within the Afternoon Constellation through early 2021 and possibly beyond Ascent Maneuvers Fall 2006 Inclination Maneuvers Fall 2004 Inclination Maneuvers Spring 2007 Inclination Maneuvers Annual Inclination Maneuvers Spring 2015 – Spring 2021 Spring 2009 Inclination Maneuvers Spring 2014 Inclination Maneuvers AMSR Science Team Meeting9/16/2015 To be updated in October/November 2015

6 Questions AMSR Science Team Meeting9/16/2015