GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 1

PREP For CDR - April SchedulePREP For CDR - April Schedule

Wall Walk

GSFC Chart Flip

(Select)

Post CDR Presentation

Package

Final Wall WalkFinal Charts

Draft Due

Draft RFA

Response

Final RFA Response

Due

SE Wall Walk

DE Wall Walk

Select Charts Due

Final Charts Due

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 2

Road Map Schedule (I)Road Map Schedule (I)

• Subsystems Wall Walk (April 7-9)– Subsystem managers and tiger team

• System Engineering (SE) Wall Walk (April 10), including P&SA– Dick Horn, Dave Lung, Tom Leisgang, Rich Bielawski, Warren

Davis, Darren Marsh and members of the tiger team • Design Engineering (DE) Wall Walk (April 11), including

Manufacturing Process– Lowell Klaisner, Gunther Haller, Martin Nordby, Jeff Wang, Jerry

Clinton and members of the tiger team• SELECT Charts Due (April 15)

– Chart from DE, SE, IOC, SAS, Manufacturing Process, and P&SA are due to Dave Lung dlung@slac.stanford.edu by COB

• Draft Peer Review RFA Response Due (April 16)– Submit RFA Response to Peer Review Committee Chairman

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 3

Road Map Schedule (II)Road Map Schedule (II)

• GSFC Chart Flip - Select (April 17)– Selected charts (SE and DE) review with GSFC project office

• Final Draft CDR Charts Due (April 22)– Submit all CDR charts to Dave Lung dlung@slac.stanford.edu by

COB• Final CDR Charts Wall Walk (April 24-25)

– LAT IPO and tiger team• Final RFA Response Due (April 28)

– Submit RFA Response to Peer Review Committee Chairman• FINAL CDR CHARTS DUE (April 30)

– Submit all CDR Charts to Debbie Nicholson debbien@slac.stanford.edu for posting and repro

• Post CDR Presentation Package (May 2)

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 4

CDR Subsystem Status Summary CDR Subsystem Status Summary (template)(template)

• Final Design Established With Known Closure Plans For Design Trades– X- LAT Plate To Electronics ICD - ECD: 7/15/03– Xx/yy Drawings Complete, zz/yy Drawings Draft – ECD 8/15/03– EM Model Tests Complete - ECD: 7/28/03

• Internal & External Interfaces Established– Yy TBX’s with closure planned – ECD: 7/12/03

• Performance Analyses Show Compliance Including Sufficient Design Margin – Any Exceptions noted with recovery plans

• Qualification & Verification Plans In Place• Subsystem Risk Areas Identified And Mitigation Plans Established• Cost & Schedule Manageable

– $$ Variance with recovery plans established– XX Week Schedule Float to Flight Delivery Need Dates

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 5

RFA Response (template)RFA Response (template)

ID # Status RFA Description RFA Response/Closure Plan

Open/Closed

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 6

Electronics Risk Summary (template)Electronics Risk Summary (template)

ID # Risk Rank

Risk Description Risk Mitigation Mitigation Status

Elec/224 Moderate

•Flight-Software schedule is tight

• Depends on execution of LAT software development approach.

• Delays in incremental review process may impact cost & schedule

•Detailed software development plan, schedule and review points established (3/24/03).

• Early integration of software to target hardware via EM plan (Sept 03)

• Extensive use of test bed (Feb 04 and beyond)

• On track

Elec/221 Moderate

• Tower Power Supplies Cost & Schedule depend on bids received in response to RFP

• Proposals may exceed allocated schedule & funding

• Bids expected 3/25/03

• Assess schedule problem

• Determine cost impact to maintain schedule

• Negotiate with vendor to minimize impact

• Develop minimum impact re-plan & pursue CCB approval

• On track

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 7

GLAST Large Area Telescope:GLAST Large Area Telescope:

Subsystem WBS: 4.1.X

Subsystem ManagerOrganizationTitle

email

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

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 8

OverviewOverview

Section XX

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

Overview

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 9

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

Requirements

RequirementsRequirements

Section XX

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 10

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

Design

DesignDesign

Section XX

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 11

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

Verification Program

Verification ProgramVerification Program

Section XX

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 12

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

Fabrication Process

Fabrication ProcessFabrication Process

Section XX

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 13

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

Cost & Schedule

Cost and ScheduleCost and Schedule

Section XX

GLAST LAT Project CDR/CD3 Review May 12-16, 2003

Document: LAT-PR-01967 Section XX 14

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

Risk & Summary

Risk and SummaryRisk and Summary

Section XX