Solar Probe Plus FIELDS

Quarterly Management

Nov 15, 2012

• Project Overview• Project Organization• Spacecraft Accommodation/Instrument Suite Measurements• Technical Status• Special Topics: Mag Boom design SOW, QA meeting results• Project Schedule• Project Risk (Summary; Detail Description of any New, Yellow, or

Red Risks; UFE threats/liens)• Total Cumulative Project Cost• Project Labor: Prime and Major Subs• Subcontractor Summary• Issues and Concerns

QUARTERLY MGMT AGENDA

• Introduction – Lori Suther (10 minutes)• EVMS Implementation on SPP• CAM Responsibility• Project Manager (PM) Involvement• Monthly EV Feedback • Monthly EV Workflow Cycle• Integrated Baseline Review• JHU/APL EVMS Architecture• Science Investigation Team (SIT) Participation• Illustrative Trace Example• Science Investigation Team EVM Challenges• EVMS Going Forward

EVMS AGENDA

FIELDS OverviewObservations• Measure electric and magnetic fields and waves• Measure poynting flux, absolute plasma density and electron

temperature, S/C floating potential and density fluctuations, and radio emissions

Measurements• Magnetic field vectors DC-64kHz• Electric field vectors DC-1MHz• Plasma waves 5Hz to 1MHz• Quasi-thermal Noise 10 kHz to 2.5MHz• Radio emissions 1MHz to 20 MHz

4

UCB Electric Field Antenna

LPC2E Search-Coil Magnetometer (SCM)

GSFC Fluxgate Magnetometer (MAG)

Project Status Update• MAG/SCM Interference Study Complete• CNES Considering Support to SCM Only• RB L&EO Support Ending• MAVEN Delivering in 2 weeks

Funding• Definitized Contract Value: $13.7

M• Definitized Funding Value: $ 3.6 M• End Date:

3/14/2013• Current EAC: $13.7

M

Milestones (Phase B)• FIELDS Specification Dev (L2) Oct, 2012• MEP Specification Dev (L3) Jan, 2013• ICU & AEB Detailed Dsn Sep 2013• RFS* Detailed Dsn Oct 2013• FPGA Reviews Oct 2013• IPDR Nov 19,

2013 Formerly HFR/TNR

FIELDS Overview

5

Electric Field Antennas

2.3 m Tip-to-Hinge

Preamps located at Hinge

Mag Boom

MAG (Inboard)

MAG (Outboard)

SCM

Main Electronics

Package (MEP)

Main Electronics Package includes:• Radio Frequency Spectrometer (RFS) - UCB• Time Domain Sampler (TDS) - UMinn• Digital Fields Board (DFB) - LASP• Antenna Electronics Board (AEB) – UCB• MAG Electronics (MAG) – GSFC• Instrument Control Unit (ICU) – UCB• Low Noise Power Supply (LNPS) - UMinn

FIELDS Organization

6

FIELDS Antenna

Antenna DevelopmentBasic Concept Complete

Materials Tests @GRC CompleteNiobium C-103

Tantalum-Tungsten Ta-W

Thermal Modeling In process, Update expected 11/16/12

Thermal Test Model (TMM)Design requires two separate models

Tests planned for PROMES and/or SAO

Deployment Fly Weight BrakePrototype #1 Complete

Prototype #2 Lower Starting Torque, Higher Speed

7

Main Electronics Package (MEP) Development

Interface Concept with Spacecraft Needs an ICDInternal Electrical Concept Being Revised for RFSWorking on Box Mechanical SpecificationsBasic Concept Uses Board Slices (similar to MAVEN)Board Size Must be Common Among all BoardsMass Estimate Used THEMIS-sized Boards (6”x9”)

AEB (THEMIS) is adding floating power supplies, reducing 6 to 4 channels, RB interface ICU (MAVEN) adding 3DPlus Flash memory but will fit in 6x9” format. DFB (THEMIS) has to add circuitry and needs smaller A/D’s to fit. The smaller A/Ds

need radiation testing (in the works at LASP). Possibly use “SideCar” chip MAG (MAVEN) is expanding heater filtering, will fit in 6x9”. The Spectrometer will be less than a single board, replacing 2-board HFR-TNR. TDS (STEREO) is expected to fit in 6” x 9” footprint

Replaced HFR/TNR with Radio Frequency Spectrometer (RFS)

FIELDS Electronics

Instrument Control Unit (ICU) Development

Decision to Use MAVEN Heritage Design (ColdFire IP)Extending Flash Memory from 8 GB to 32 GBReducing SRAM from 3 MB to 1MBRemoving Interface Logic from 8 instruments to 5Re-Using Interface Hardware and Software for MAG and DFB (MAVEN)Re-Using Interface Design for AEB (RBSP)TDS is reviewing the MAVEN protocol and expected to be a copy of DFB.Based upon MAVEN, CPU clock (power) should be reduced 4 to 8x

FSW Development Plan follows MAVEN plan (NHB_7150 compliant)Code Warrior Development License, 2 Workstations on orderColdFire IP Core License procured

FIELDS Electronics

10

RFS Block diagram

SCM MF Output

PA

ADCPA

PA

PA

PA

FPGA

RAM

CommandDataSample_CLKBit_CLK

CH1

V1 (HF)

V2 (HF)

V3 (HF)

V4 (HF)

B-MF

BP

ADC

CH2BP

UCB Digital Receiver

Mux / ADC Control

InstrumentControl

Unit(ICU)

Low Noise Power Supply(LNPS)

E-Field Antenna PreampsHF outputs feed Receiver

11

RFS Dynamic Range

Pulupa – Aug, 2012

12

RFS Requirements

• Input levels– V1-V4

• In the range ±5V• Switchable gain on front end to accommodate wide dynamic range

and uncertainty in signal levels (TBD, Gain in Preamp preferred)• Dynamic Range for Receiver input and ADC

– At Preamp Input, ranges from < 10µV to < 10mV (TBR)– Preamp will boost signal, so Receiver will input signal modified by the Preamp

transfer function plus noise

• Noise level – At Preamp input: < 10nV / √Hz– Receiver must preserve this low noise floor (again modified by Preamp)

– B-HF• Frequency range 10kHz to 1MHz (SCM HF winding)

– Voltage range: ±8.5V

• Switchable gain on front end to accommodate wide dynamic range and uncertainty in signal levels (TBD)

13

RFS Data Products• Signal Processing

– TNR Spectra• V1, V2, V3, V4, V1-V2, V3-V4, B-HF• Log-spaced frequencies, Δf/f = 4% (perhaps higher resolution)• Picket fence, avoid frequencies f+Nf, starting at 150kHz, f=50kHz (or

150kHz)• Cadence: TBD

– TNR Cross Spectra (direction finding)• V1 and V2, V3 and V4, V x B• Cadence: TBD

– HFR Spectra (And cross spectra?)• V1, V2, V3, V4, V1-V2, V3-V4• Frequency resolution:

– 1MHz to 5MHz: 50kHz spacing (TBR)– 5MHz to 20MHz: 100kHz spacing (TBR)

• Bandwidth: 25kHz (TBR)• Picket fence• Cadence: TBD

14

RFS Signal Processing

• Development Plan– Build Test Bed for Algorithm development and verification

• Hi speed ADC for signal capture, connected to laptop• Acquire data set using STEREO S/WAVES Antennas/Preamp• Can add impulsive events to time series, simulate anticipated dust signatures• Develop algorithms in Software, then transfer to VHDL and/or FSW• Include hi speed DAC to play data through Receiver

– ETU build prior to iPDR

ADC FIFO

Filter Bank

4096 chane.g. Poly-

phase Filter

Compute power

x2Integrate

Process data (uP needed?)e.g. compress data

Decimate dataPeak detector

Make data products

16 16 28 56 64

FPGA

MAG StatusDual Tri-axial Fluxgate Magnetometers

• Basic concept complete (e.g., MAVEN, RBSP)

• Non-magnetic thermal vacuum chamber being built now to test wider temperature environment for fluxgate sensor.• Wide range thermal cycling, thermal balance

• Calibration at temperature at GSFC Mag Test Site

• Evaluation of sensor materials (increase thermal stability, reduce sensor mass)

• Increased AC frequency response and increased sampling rate at 256 Hz also demonstrated

• Minor updates to sensor proportional heater design are in process; looking at ways to reduce heater power

• Printed circuit board sizes under study• No problems anticipated with proposed 9.2” x 6.2” size

• Schedule and budget issues being actively worked 15

FIELDS ScheduleTask Name

FIELDS (UC Berkeley) Delay of Phase B Start / KDP-B Phase B End / KDP-C FIELDS Instrument Milestones End MAG Electronics Design/BB End MAG Sensor Head A/B Cold Ops FIELDS iPDR Peer Reviews FPGA Peer Reviews Unit Peer Reviews End MAG Electronics Design/BB End MAG Sensor Head A/B Cold Ops FIELDS iPDR Begin MAG EM Electronics IPDR Schedule Reserve Begin MAG EM Electronics Mission PDR Complete Schedule Reserve FIELDS iCDR Mission CDR Complete Mission SIR Complete FIELDS iPER FIELDS iPSR FIELDS Instrument Delivery

FIELDS Schedule Rework

Project 2010 was Crashing on Fields.mppLinked to Wrong Sub-schedulesLinked to random Tasks in Sub-schedules

Unrecognizable Tasks e.g. “Update thermal model”Listing All Docs as due “2/1/2012”Need Real Dates and Real interactions with APL Milestones Needed Work

Mixture of SPP & random FIELDS tasks Allowing Project 2010 to change instrument review

dates

Sub-schedules were insufficiently detailedSome still adjusting to changes in Mission scheduleWant to be able to use PERT formatNeed to resource load

Excerpt from Oct 5 schedule. Grey lines linked to other schedules in odd places.

Mission NASA AO Jun '11 Nov '12 NASA AO Jun '11 Nov '12PDR to CDR 01/01/14 09/04/13 01/06/14 22.0 17.9 13.8CDR to * 11/02/15 03/02/15 03/02/15 29.0 12.1 15.1SIR n/a 03/04/16 06/03/16 16.1 16.1PER n/a 07/06/17 10/06/17 9.9 4.6PSR 04/01/18 05/02/18 02/22/18 4.0 3.3 5.2ILC 08/01/18 08/09/18 07/30/18

Duration in MonthsDates

FIELDS Schedule

FIELDS Mission Schedule Changes

Instrument Proposed Jun '11 Nov '12 Proposed Jun '11 Nov '12IPDR 11/6/13 6/1/13 11/19/13 20.0 19.0 14.0iCDR 7/6/15 1/1/15 1/19/15 9.0 10.0 10.0iPER 4/4/16 11/1/15 11/19/15 3.7 3.8 3.8iPSR 7/25/16 2/25/16 3/14/16 0.2 0.2 0.2Delivery 8/1/16 3/1/16 3/19/16

Dates Duration in Months

Durations are AROIs the schedule supposed to gate “flight build” upon iCDR, or MCDR ?

iPDR and iCDR precede MPDR and MCDR by 6-8 weeks

FIELDS appears to be delivering too early

FIELDS Schedule

FIELDS Schedule Organization

FIELDs Integrated Master

Schedule

LASPDFB

UMNTDS, LNPS

UCBRFS

LP2CESCM Sensor

GSFCMAG, Sensors

Schedule Requirements

(Reviews & Delivery Dates)

Flow Down

UCBPA

UCBAEB

UCBICU

UCBANT

Each schedule is maintained by a team member who provides direct and timely communication with the team. Revises the schedule as needed.

FIELDS Schedule

FIELDS Schedule Organization

FIELDs Integrated Master

Schedule

Estimated Completion Dates

Flow Up

LASPDFB

UMNTDS, LNPS

UCBRFS

LP2CESCM Sensor

GSFCMAG, Sensors

UCBPA

UCBAEB

UCBICU

UCBANT

Progress and changes are reported to UCB by a member of that team with intimate knowledge of the application area.

Antenna Schedule

FIELDS Schedule

ICU Schedule

FIELDS Schedule

AEB Schedule

FIELDS Schedule

RFS Schedule

FIELDS Schedule

DFB Schedule (LASP)

FIELDS Schedule

TDS Schedule (UMN)

FIELDS Schedule

LNPS Schedule (UMN)

FIELDS Schedule

SCM Schedule

Supported MAG-SCM compatibility tests Built / Tested dual gain model with acceptable results for SPP Developed SCM specification (Ed. ahead of schedule) Currently funded through 2013

FIELDS Schedule

FIELDS Top Level Schedule iPDR planned for 11/19/2013

FIELDS Schedule

FIELDS Risk SummaryChg RANK ID Approach TITLE

* 1 F3 Mitigation Foreign Funding Issues

* 2 F9 ResearchMagnetic Sensor

Qualification

* 3 F12 Research Magnetic Cleanliness

* 4 F13 ResearchThird axis electric field

measurement

* 5 F7 Research ElectroStatic Contamination

* 6 F5 Mitigation Survival Thermal Environment

* 7 F10 Watch Antenna Qualification

* 8 F6 ResearchMagnetic Sensor

Interference

* 10 F11 WatchSCM dependence on Solar

Orbiter

5

5 1 0 1 5 2 0 2 5

4

4 8 1 2 1 6 2 0

3

3 8 9 1 2 1 5

2

2 4 6 8 1 0

1

1 2 3 4 5

1 2 3 4 5

ApproachM – MitigateW – WatchA – AcceptR - Research*

Criticality

Decreasing (Improving)Increasing (Worsening)UnchangedNew since last month

L x C Trend

Med

High

Low

CONSEQUENCES

LIKELIHOOD

F7

F12

F5F6

F9

F3

F13

F11F10

P

P

P

P

P

PS

CS

CSCS

FIELDS RisksID Title P I Crit Risk Statement Impact Term Plan Approac

h

11/14/2012 Notes

F3 Foreign Funding Issues

5 4 H

If foreign funding sources failthen we may lose the search coil sensors or electronics.

Loss of Science

Long Plan backup fabrication using US funding. When formally agreed, this risk can be retired.[SCM] Submit in time a satisfactory technical and financial proposal to CNES (09/12) (R29)To Retire Risk: - CNES committment for phase B funding (part 1) - funding backup options for TNR and SCM 09/11 - 06/12: decision to proceed - 09/12: CNES proposal for next phase - KDP-C - Final CNES commitment in Phase C

Research In October, 2012, CNES turned down the NASA LOA. This ends the probability of LESIA (HFR/TNR) being in the complement. Subsequent meetings at CNES offer hope that the SCM (LPC2E) will be funded by the end of the year at most.

F5 Survival Thermal Environment

2 4 M

If the survival thermal environment for the SCM and MAG does not meet the sensors’ minimum temperature requirements,improved, then additional heater power will be required to avoid instrument failure.

Loss of Science

Long FIELDS electronics have no heritage at extreme cold temperatures. Perform thermal analyses to set specification for tests to be performed.[SCM] carrying as high risk (R01)To Retire Risk:- Preliminary Thermal Analysis/Test to confirm if the thermal design is adequate (06/13)- GSFC MAG Ops & Survival Thermal Test(06/13) (P step down)- APL test high-efficiency blankets on MAG Boom mock-

Mitigation Mag Thermal Chamber is not yet operational due to the SPP limitation on Phase B funding. Looking for MAG Ops thermal test in mid 2013.

F7 ElectroStatic Contamination

3 3 M

If the S/C has areas that charge up,then their potential will compromise the electric field measurements.

Degraded Mission

Long Current unknown materials and surface properties to evaluate. TPS is now known to be non-conductive during science periods.To Retire Risk:- ESC plan draft (prior to I-PDR, P step-down) - ESC plan final (prior to I-CDR, P step-down) - Retires at mission I&T when ESC is verified

Research

FIELDS RisksID Title P I Crit Risk Statement Impact Term Plan Approac

h

11/14/2012 Notes

F9 Magnetic Sensor Qualification

3 4 M

If the MAG sensor is not qualified for the number of operational thermal cycles,then the sensor may fail in orbit.

Loss of Science

Long MAG unwilling to accept thermal environment for sensor, unlikely to life-test sensor to 200 cycles at thermal extremes.To Retire Risk: - Plan thermal testing of a representative MAG sensor (P step-down) (by I-PDR) - Completion of MAG sensor thermal testing (P step-down) (by I-CDR) - retire risk after successful testing

Research Current plan has MAG thermal cycling completed by iPDR.

F12 Magnetic Cleanliness

4 3 M

If the S/C exhibits high residual magnetic fields (AC or DC),then the magnetic measurements will be contaminated.

Degraded Mission

Long To Retire Risk:- Magnetics plan draft (prior to I-PDR, P step-down) (P step-down) - Magnetics plan final (prior to I-CDR, P step-down) (P step-down) - design freeze at M-CDR cofirms long-enough MAG boom (P step-down) - Retires at mission I&T when magnetics is verified

Research UCB developed concepts for longer boom lengths as a mitigation for S/C generated magnetic fields. Alternatively, the S/C could be magnetically clean.

F13 Third axis electric field measurement

4 3

M

IF S/C electrostatic center is near the TPS and highly variable, then FIELDS will fail to measure the sunward electric fields

Loss of ScienceMid Study the possibility of making a simple surface voltage measurement on the MAG boom as a baseline for the sunward electric field.

Research Completed study August, 2012. Need to decide if it can be accomodated.

FIELDS Funds & Costs

Distributions to LASP, UMN, UMD and UNH

FIELDS UCB Labor

This looks better on a log scale.

FIELDS Subcontracts

Subcontract Organization Thru Phase B Funded to Date Acct Offi ce Records7549 UNH 90,245$ 53,275$ 11/30/20127550 UMD 90,245$ 51,950$ 11/30/20127447 UMN 1,738,277$ 740,024$ 11/30/20127448 LASP 1,554,012$ 750,985$ 11/30/2012

Technical “Common CPU” design with SWEAP is becoming less likely SWEAP is requiring very high processor speeds, 64 GB, add new interfaces FIELDS is looking to reduce power, reduce memory, utilize existing I/Fs and FSW SWEAP needs to secure its own processor designer

Cost Encumbered Reserve for the HFR/TNR is very close to the RFS cost (1.1M ) However, Phase B is ~ 0.4M higher as the RFS needs development time. Encumbered Reserve for SCM in Phase B is ~0.7M. So, securing the SCM LOA would release enough funds for RFS Otherwise, either [1] the GSFC backup SCM is delayed or [2] reserves could be

used

Schedule MAVEN is leaving the building. That’s good! Major proposals (ICON/OHMIC), if selected in March, will split our manpower Personnel already in the process of listing replacement positions

FIELDS Issues & Concerns