sdo independent annual review hmi instrumenthmi.stanford.edu/nasa_documents/2006_iar_hmi_r3.pdf ·...

SDO Independent Annual Assessment – June 28-29, 2006 SDO Project

SDO Independent Annual ReviewHMI Instrument

June 28, 2006


Optics Package Cutaway View

Front Door

Front Window

Sun Shade

Detector (Vector)

Detector (Doppler)

CEB (Doppler)

CEB (Vector)

Limb Sensor

Shutters

BDS Beam SplitterBDS Fold Mirror

Alignment Mechanism

Michelson Interferometer.

Lyot Filter

Filter Oven Housing

Connector Panel

Support Leg

Focus Wheels

ISS Active Mirror

HCM

ISS Beam Splitter

Telescope

Vents

OP Structure


HMI Overview

• Schedule aligned with current S/C need date (15 days reserve)• HMI Optics Package integration nearing completion and optics being calibrated• Flight electronics are progressing and available for system test in August 06• HMI has undergone system level characterization during initial Sun Tests• Preparing for HMI Pre Environmental Review on August 1, 2006• Observatory Integration and Test planning in process• JSOC development progressing well on parallel schedule with instrument• Current issues

– Flight camera deliveries


Current Status (1)

• All flight CCDs and spares received (10), all received “highest quality” grading.• Flight HMI Optics Package (HOP) is reassembled and ready for second sun test

after rework of anodized parts and final optics selections.– Replaced filter oven.– Upgraded Lyot filter and selected Michelson Interferometers.– ETU cameras are being used for initial calibrations, characterization, and testing.– Flight cameras are due in July 2006.

• Mass simulator delivered to GSFC and installed on the flight IM for SVU testing.• HMI ICD, Revision H is released. No interface or accommodation issues.• August 2006 Pre-Environmental review planning has begun.

– 18 HMI CDR RFAs closed, 1 being iterated with originator.– Test plans and initial procedures are in draft form, verification matrix established and reviewed.– Second Sun Test is currently underway.– Vacuum check/calibration of flight HMI Optics Package will start in July 2006.– Environmental testing will start in August 06.

• All flight mechanisms assembled and integrated, and all mechanism life tests completed.


Current Status (2)

• Electronics– Flight CEBs are scheduled for delivery in July 2006.– ETU electronics are completing final test.

• FPGA for camera interface brass board is completing test and final refinements.• End-To-End testing with Camera Interface (CIF) and DC/HRI boards is in process.

o CIF board development issues slowed progress.

– Flight boards are in production (4 boards remaining – 2 DC/HRI and 2 CIF).

• JSOC development progressing well on parallel schedule with instrument.– MOC to SOC (command, health and safety) testing is scheduled for Oct 2006.– Prototype science data capture and archiving system has completed initial development

phase.


HMI Resource SummaryHMI Mass Trend

45

50

55

60

65

70

75

80

1-Apr-03

1-Jul-0330-Sep-03

31-Dec-03

31-Mar-04

30-Jun-04

30-Sep-04

30-Dec-04

1-Apr-05

1-Jul-0530-Sep-05

31-Dec-05

1-Apr-06

1-Jul-06

Mas

s (k

g)

Basic Mass

Mass Allocation

74.90

12.36

44.00

18.54

Mass (kg)

77.00Total

7.70Harness

46.97HMI Optics Package

22.33HMI Electronics Box

Allocated (kg)Mass Estimate

HMI Power Trend

90

95

100

105

110

115

120

125

1-Apr-03

1-Jul-0330-Sep-03

31-Dec-03

31-Mar-04

30-Jun-04

30-Sep-04

30-Dec-04

1-Apr-05

1-Jul-0530-Sep-05

31-Dec-05

1-Apr-06

1-Jul-06

Pow

er (W

)

Nominal Mode Estimate

Nominal Mode Allocation

Eclipse Mode Estimate

Eclipse Mode Allocation

N/A0Launch Mode

TBD65.7Orbit Raising Mode

122103.5Eclipse Mode

11196.0Nominal / Operations Mode

Allocated Power (W)

Estimated Power (W)

Power Budget


Significant Changes Since CDR

• Technical– No significant design changes

• Risk Changes– Retired risks: detector deliveries, CEB noise, LM drawing release and procurement system– Added risks: CEB deliveries

• Schedule Reserve Trend

HMI INSTRUMENT SLACK (RESERVE)(Internal to Planned Delivery)

-10

0

10

20

30

40

50

60

70

Apr-

04

May

-04

Jun-

04

Jul-0

4

Aug-

04

Sep-

04

Oct

-04

Nov

-04

Dec

-04

Jan-

05

Feb-

05

Mar

-05

Apr-

05

May

-05

Jun-

05

Jul-0

5

Aug-

05

Sep-

05

Oct

-05

Nov

-05

Dec

-05

Jan-

06

Feb-

06

Mar

-06

Apr-

06

May

-06

Slac

k to

pla

nned

del

iver

y (d

ays)

P lannedDelivery Date: 3/16/2007

Critical Path: CEB delivery

Recovery f rom improper ly

anodized part s

FY05 RescissionReplan Schedule

EEE parts procurement HSB development issues

M odif ied Test Flow

CEB Delivery Slip

HM I delivery date moved from 2/2/07 to 3/16/07


HMI Summary Schedule

• Delivery Date: March 16, 2007– 15 days of reserve

• Critical Path– CEB deliveries


HMI Risk Assessment

Risk ID Title Board L C I A

RMHMI019 Electronic Parts DeliveriesRMRB 4 May 2006No change in rankings. Bridgeboard oscillators are still lagging.

3 4 S M

RMHMI020 Camera Interface Board Design

RMRB 4 May 2006Decreased likelihood and consequence: SDRAM problem understood and solved. CIF board routinely transferring images from camera to camera simulator through DCHRI at full readout rate. Final board layout is underway.

3 4 S M

RMHMI025 CEB deliveriesRMRB 4 May 2006Increased likelihood based on recent 2 week slip in RAL delivery.

4 5 S M

Title Concern Mitigation(19) Electronic Parts Deliveries If the electronic parts are not delivered on time to meet

the production schedule, the instrument schedule will be impacted.

Work with vendors to improve deliveries and work with engineers to find alternative parts. Build around shortages as necessary (build partial boards).

(20) CEB Delivery Schedule If the CEB deliveries continue to slip, then the HMI instrument delivery will slip.

Increased oversight of RAL

(25) Camera Interface Board Design

If the design of the camera interface board and its associated FPGAs are not completed in a timely way, its testing and testing with the DCHRI and the rest of the system cannot proceed and the flight HEB schedule will be delayed.

Conducting a detailed review of the camera interface FPGA designs and assigning additional resources to the design update and testing of the camera interface board.


HMI Current Status - Photos

HMI CCD in Focal Plane Assembly

HMI Flight Headboard



HMI Mass Simulator Integrated onto Flight IM

Flight Harness on SDO Harness Mock-Up



Flight Narrow Band Michelson Interferometer

Flight Hollow Core Motors



HMI Flight Optics Package1st Sun Test Configuration - February 2006



HMI Flight Optics Package Assembly

Detector Assembly

CEB

Flex-Cables

Telescope

Front Window

ISS Mirror

Polarization Selector

Focus/Cal Wheels

Limb Sensor

ISS Beam Splitter

BDS Beamsplitter

Shutters

BDS Fold Mirror

CCD Fold Mirror

Alignment Mechanism

Internal Harness

Limb Pre-amp Box

Structure

Oven Controller

Oven Assembly



HMI Dopplergram from Sun Test HMI Magnetogram from Sun Test

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