glast lat projectnovember 17, 2004 anticoincidnce detector 1 glast large area telescope: face to...

GLAST LAT Project November 17, 2004

AntiCoincidnce Detector 1

GLAST Large Area Telescope:GLAST Large Area Telescope:Face to Face MeetingNovember 17, 2004AntiCoincidence Detector (ACD) Subsystem WBS: 4.1.6

David J. ThompsonThomas E. JohnsonNASA Goddard Space Flight CenterSubsystem Manager/Instrument Manager

[email protected]@nasa.gov

Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope



OutlineOutline

• Cost Plan – Variance Summary• Lien List• Manpower Plan• FY05 Cost/Manpower Overview• FY06 & 07 Cost/Manpower Overview• Schedule• Backup Material

– Critical Path– Descope Options– Assumptions and Risks



COST PLAN – VARIANCE SUMMARYCOST PLAN – VARIANCE SUMMARY

ACD Subsystem Estimate at Complete (EAC), ($K)

Plan at Complete (PMCS), ($K)

Variance ($K)

4.1.6.1 Management/Systems/Science 3156.3 3930.0 226.3

4.1.6.2 Safety and Mission Assurance 817.7 585.0 223.9

4.1.6.3 Tile Shell Assembly 3723.0 3552.0 181.0

4.1.6.4 Base Electronics Assembly 5598.4 5242.0 356.4

4.1.6.4 BEA (SLAC) 684 640 44

4.1.6.5 Micrometeoroid Shield/Thermal Blanket

578.2 335.0 243.2

4.1.6.6 Mech Qual & Calibration Unit 160 108.0 52.0

4.1.6.7 Integration and Test 639.0 368.0 271.0

4.1.6.8 LAT Integration and Test 66.8 36.0 30.8

4.1.6.B Ground Support Equipment 951.2 799.0 152.2

TOTAL 17,340.6 15,595.0 1745.6



Lien ListLien List

Lien Description FY05 Liens*

EGSE SW Support $60K

FY05 portion of grassroots estimate (4-04) $226K

MS/TB $113K

Reduce Efficiency verif. Test duration ($20K)

Reduce shipping time ($10K)

Schedule Delay (including 2.5 month fab phase delay) $1230.6K

Streamline conformal coating FREE boards ($4K)

SLAC ASIC variance $44K

LAT I&T Support (½ time technician) $31K

Science Support for FY05 and ½ of FY06 (Grad Student) $75K

TOTAL $1745.6K* Updated Lien list from the lien list provided by Jay Doubrava on 10/13/04



Manpower PlanManpower Plan

• The following table provides both the Contractor and Civil Servant manpower plan for FY05-FY07

• Assumptions:– ACD RFI and integration to the LAT date is 5/17/04.– ACD Support Team ramps down significantly after 5/17/04.– From July – September, 1.8 FTE’s are for Science Support and the

remaining support is for Systems Engineering and Management.

Total TotalNov Dec Jan Feb Mar Apr May Jun Jul Aug Sep FY06 FY07 FY05

CS 26.1 20.4 18.2 21.7 16.8 16.3 16.6 8.6 1.3 1.3 1.3 0.8 0.0 13.2 12.4CON. 25.6 17.7 20.1 14.6 10.5 8.6 7.7 4.0 1.5 1.0 1.0 0.7 0.2 10.3 9.4TOTAL 51.7 38.1 38.3 36.3 27.4 24.9 24.3 12.6 2.8 2.3 2.3 1.5 0.2 23.4 21.7

FY05



FY05 Cost/Manpower Overview by TaskFY05 Cost/Manpower Overview by Task

WBS Element Total Cost M&S Labor Contract FTE CS FTE

4.1.6.1 Management/Systems Eng/Science Support

519.3 144.9 374.1 2.3 2.4

4.1.6.2 Safety & Mission Assurance 222.7 6.0 216.7 2.0 0.30

4.1.6.3 Tile Shell Assembly 10.0 10.0 0 0 0

4.1.6.4 Base Electronics Assembly 349.4 83.5 265.9 2.0 2.2

4.1.6.5 Micrometeoroid Shield/Thermal Blanket

167.2 135.0 32.2 0.3 0.23

4.1.6.6 Mechanical Qual & Calibration Unit

0 0 0 0 0

4.1.6.7 Integration & Test 492.0 250.6 241.4 1.9 6.2

4.1.6.8 LAT Integration & Test Support

66.8 33.1 33.7 0.2 0.4

4.1.6.9 Mission Integration & Test 0 0 0 0 0

4.1.6.B GSE 224.2 108.6 115.6 0.8 0.8

Total 2051.6 717.0 1334.6 9.4 12.4



FY06 & 07 Cost/Manpower Overview by TaskFY06 & 07 Cost/Manpower Overview by Task

Assumptions:

•Civil Service personnel salaries are paid by Goddard, not the LAT.

•Labor consists of science support only.



InitialTDA/TSA I&T in B7

ACD SubsystemEfficiency

Verification test(include rotate

ACD 90 degree)

EMI/EMC Test

Pre-shipReview (PSR)

Vibration Test

Thermal Balance/Thermal-Vac

Test

Mass Properties ACD ship to SLAC

Pre-EnvironmentalReview (PER)

Acoustic Test

Post-shipCheckout &

Full Functional Test at SLAC

Install & test 1st & 2nd flightChassis onto

ACD

Qual Electronics

ChassisEnvironmental

Test

1st flight chassis

Environmental Acceptance

Test

The remaining Seven Flight

Chassis Environmental

Acceptance tests

10/4 – 11/30 11/25 – 12/7 12/2 – 1/11

ACD FullFunctional

Test

Install ThermalBlanket &

MMS

2/10/05

Assemble last 2 rows of

TDAs & WSF (124-130, 224-230, 324-330, 424-430)

onto TSA

ACD Integrationcomplete

12/29/04 – 1/14/05

1/14/05 – 1/25/05

6/10 – 11/19 12/7 – 12/13

Install & test remaining six

flightChassis onto

ACD

12/14 – 1/13

1/14/051/25/05 – 1/27/051/27/05 – 2/10/05

2/11/05 – 2/23/052/23/05 – 3/4/05

3/4/05 –3/10/05 3/10/05 – 4/7/05 4/7/05 – 4/8/05 4/11/05

4/12/05-4/19/05(was 3/26/05 – 4/2/05) 4/19/05 – 5/17/05

Schedule FlowSchedule Flow



BACKUP SLIDES



ACD Critical Path - PMTsACD Critical Path - PMTsACTIVITY COMPLETION DATE

First 10 PMTs completed 11/23/04

11-34 PMTs complete 11/29/04

# 1 Dual EC Assy 12/10/04


# 1 Single EC Assy 12/15/04



#2 Dual EC Assy 12/20/04


#3 Dual EC Assy 12/29/04



#4 Single EC Assy 1/8/05


# 4 Dual EC Assy 1/13/04

BEA Integration Complete 1/13/05

ACD Integration Complete 1/14/05



Descope OptionsDescope Options

• Perform environmental testing at the LAT Level.– The ACD Subsystem would not be fully qualified prior to

integration to the LAT. This would transfer schedule and cost risk to LAT integration.

• The following table provides the cost and schedule savings for eliminating testing at the ACD Subsystem level.

ACTIVITY DURATION (days) COST ($K)

EMI/EMC Testing 9 $50.4

Vibration Testing 13 $44.9

Acoustic Testing 8 $27.1

TVAC/Thermal Balance 33 $158.2

Mass Properties 5 $14.4

TOTAL 68 $295



COST PLAN – Assumptions and RisksCOST PLAN – Assumptions and Risks

• Assumptions– Success based plan. Rapid resolution of current technical issues (PMTs and EGSE)

is required to stay on plan.

– ACD RFI date is 5/17/04.

– Minimal support (details provided on slides 3,4,6,&7) is provided following integration of the ACD to the LAT.

• Risks– No contingency in ACD cost plan.– A later than 5/17/04 integration date to the LAT will not allow the full

planned ramp down of ACD personnel.

glast lat projectnovember 17, 2004 anticoincidnce detector 1 glast large area telescope: face to...

Documents

glast lat projectnovember

anticoincidnce detector

lat integration

lat date

functional test

test duration

science support

remaining support