Slide 1 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged. © 2017 California Institute of Technology. Government sponsorship acknowledged.

ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station

ECOSTRESS Payload

Wes Schmitigal May 15, 2017

Jet Propulsion Laboratory, California Institute of Technology

© 2017 California Institute of Technology. Government sponsorship acknowledged.

Slide 2 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

Payload Overview

•  ECOSTRESS is a 5 spectral bands thermal infrared radiometer covering the 8–12.5 µm spectral range

•  ECOSTRESS will measure brightness temperatures of Earth over a 400km swath, at a resolution of 69 x 38 m

•  ECOSTRESS will measure the temperature of plants and use that information to better understand how much water plants need and how they respond to stress via high spatiotemporal resolution thermal infrared measurements of evapotranspiration from the International Space Station (ISS)

1.85m 0.80m

0.93m

Closeout panel not shown

Yoke

Nadir Baffle

Scan Mechanism

Hot Blackbody Calibration Target

Cold Blackbody Calibration Target

Cryocooler Compressors

(3x)

Cryocooler Expanders

(3x) Contamination Enclosure (containing cold optics)

Radiometer bipod

Slide 3 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

Hardware Approach

•  Heritage Hardware and Designs –  PHyTIR instrument from Instrument Incubator Program (IIP) –  Payload thermal and structures designs from OCO-3 –  Power Conditioning Electronics (PCE) designs from OCO-3 –  Central Electronics Unit (CEU) designs from SMAP, SIM, and OCO-3 –  Software and firmware designs form OCO-3 –  GSD/MOS from ENose, VCAM and OCO-3 –  SDS from CARVE, SMAP and OCO-3

•  COTS Hardware and parts –  Mass storage units (MSU) –  Cryocooler and cryocoolers electronics –  Moxa radio and antenna for Wi-Fi

•  New designs –  Focal Plane Interface Electronics (FPIE) –  Cryocooler Multiplexer (CCM)

•  GFE –  Payload Interface Unit (PIU), H-Fixture, and Flight Releasable Grapple Fixture (FRGF) from JSC –  passive Flight Support Equipment (pFSE) from SpX

Slide 4 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

ECOSTRESS Payload Configuration

1.85m 0.80m

0.93m

H-Fixture

Passive Flight Support Equipment (pFSE) (4x)

JEM-EF Payload Interface Unit (PIU)

Flight Releasable Grapple Fixture (FRGF)

Yoke

Nadir Baffle

Scan Mechanism

Hot Blackbody Calibration Target

Cold Blackbody Calibration Target

Cryocooler Compressors

(3x)

Cryocooler Expanders

(3x) Contamination Enclosure (containing cold optics)

Radiometer bipod

Central Electronics

Cryocooler Multiplexers

Focal Plane Interface

Electronics

Power Conditioning Electronics Cryocooler

Control Electronics (6x)

Mass Memory Storage

(2x)

WiFi Electronics Wi-Fi

Antennae (4x)

Slide 5 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

Accomplishments since CDR

•  All flight mechanical parts have been delivered to Payload I&T •  All thermal components have been delivered to Payload I&T, except for the thermal

blankets •  The Cryocooler pulse tubes have been redesigned, tested and are now providing a

enough cryogenic margin at reduced power •  The radiometer has been tested, aligned, calibrated and delivered to Payload I&T •  The Focal Plane Interface Electronics signal chain board has been redesigned, tested

and is now meeting the science requirements •  All the flight cables have been delivered to Payload I&T •  End to end data flow from the focal plane to the GDS server has been tested with flight

hardware, firmware and software •  ISS 1553 interface, CEU command/telemetry and control of all the electronics have

been tested •  Ambient thermal testing and thermal cycling of electronics have been completed •  Payload has held its Environmental Test Readiness Review (ETRR) and started final

integration

Slide 6 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

ECOsystem Spaceborne Thermal Radiometer Experiment on Space Sta9on

Wi-Fi Electroni

cs

1.  PIU and PIU panel assembly 2.  Accumulator and filter assembly 3.  Focal Plane Interface assembly 4.  Cryocooler multiplexer assembly 5.  Central electronics unit 6.  WiFi electronics box assembly 7.  Cold Panel 8.  WiFi Antenna 9.  Mass storage unit 10.  Cryocooler electronics 11.  Power condition 12.  Radiometer Instrument 13.  Close out panels

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© 2017 California Institute of Technology. Government sponsorship acknowledged.

Slide 7 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

Payload Integration Status

•  PIU and cold panels fully integrated with PIU, accumulator assembly, and all fluid lines

•  Fit checked all electronics boxes on cold panel •  Laid out and routed all flight cabling on panel with

electronics •  Radiometer, cryocoolers, and fluid loop all integrated

with nadir panel •  Fit checked payload box structure together •  Operated whole system end-to-end

HRS integration of PIU and cold panel Electronics and cabling on GSE panel

Radiometer on nadir panel

Slide 8 ECOSTRESS Science Team Meeting May 15, 2017

© 2017 California Institute of Technology. Government sponsorship acknowledged.

What’s Next

•  Complete final payload integration and close out •  Perform functional and performance testing •  Move payload to environmental test facilities in preparation for the following tests;

–  EMC/EMI –  Vibration –  Thermal

•  Store the payload •  Deliver to KSC for ATLO •  Launch and IOC •  Start Science Operations