1. Section 20.0 Mission Assurance Roger Counts Systems Assurance Manager ST5 PDR June 19-20, 2001 GSFC 5 Space Technology “Tomorrow’s Technology Today”

2. GSFC ST5 PDR June 19-20, 2001 20-2 Mission Assurance Organization Project Manager Systems Assurance Manager Quality Assurance Quality Engineering S/W Quality Assurance Inspection/Audits Certification/Training NCRCA MRB Systems Safety and Reliability Systems Safety Engineer Reliability Engineer Environmental Program Materials Engineering Materials Engineer Coupon Analysis Material Usage Agreements Analysis Lab Parts Engineering Parts Engineer Parts Selection/stocking Alerts Analysis Lab Systems Review Office OSSMA (Code 300) GSFC

3. ST5 PDR June 19-20, 2001 20-3 Mission Assurance Requirements Tailored from the requirements suggested by the Mission Assurance Guidelines GPG 8730.4.2 Contained in “Mission Assurance Requirements for the ST5 Project”, ST5-495-010 Technical Reviews in addition to Peer Reviews –System Concept Review (SCR) – Completed May 2000 –Preliminary Design Review (PDR) – June 19-20, 2001 –Critical Design Review (CDR) –Pre-Environmental Review (PER) –Mission Operations Review (MOR) –Pre-Shipment Review (PSR) –Flight Operations Review (FOR) –Flight Readiness Review (FRR)

4. GSFC ST5 PDR June 19-20, 2001 20-4 Mission Assurance Requirements Design Verification –Performance Verification Plan (PVP) –Verification Program based upon GEVS-SE –Verification Matrix (for both H/W and S/W) –Environmental Test Matrix –Procedures and Reports –Protoflight and Acceptance testing to ST5 S/C Specification and Requirements document (ST5-495-007) Protoflight testing shall be performed on the first Flight Unit of the ST5 constellation Acceptance testing shall be performed on follow-on Flight Units

5. GSFC ST5 PDR June 19-20, 2001 20-5 Safety –“ST5 System Safety Implementation Plan”, ST5-495-040 - Approved –Assumes use of ELV, and not Shuttle –Developers provide required information for GSFC Safety Engineer –GSFC has overall safety responsibility Parts Requirements –PPL-21, Grade 2 as baseline. Lot specific Qualification and DPA implemented based on part heritage. Parts Control Plan currently in draft form; is being implemented for all subsystems. –Parts Control Board review of selected parts. Approved parts will be added to ST5 PAPL and posted on web site. Mission Assurance Requirements

6. GSFC ST5 PDR June 19-20, 2001 20-6 Electronic Packaging and Process –NASA Workmanship Standards –Coupon Evaluation Materials –NASA Publication 1124, Outgassing Data for Selecting S/C Materials, shall be used as a guide. –Materials approved via a Materials Control Board chaired by Project Materials Engineer –Materials must meet CVCM level 0.1% and TML of 1.0% –Non-approved materials or nonconventional use of materials processed via Materials Usage Agreement (MUA) –GSFC S-313-100, GSFC Fastener Integrity Requirements Mission Assurance Requirements

7. GSFC ST5 PDR June 19-20, 2001 20-7 Reliability –FMEA – To be completed by CDR –Fault Tree Analysis - To be completed by CDR –Probability Risk Assessment (PRA) –Assessments shall include Worst Case Analysis, Parts Stress Analysis, and limited life items program Mission Assurance Requirements

8. GSFC ST5 PDR June 19-20, 2001 20-8 Mission Assurance Requirements Quality Manual (or equivalent) required from major subcontractors (All are due prior to CDR) –Cold Gas Micro-Thruster System - Marotta Scientific Controls, Inc. Approved –Li-Ion Battery - AEA Technology –X-Band Transponder Communications System - AeroAstro Received Draft Version – Flexible Cable - Lockheed Martin Astronautics, Denver –Autonomous Ground-Based Constellation Management S/W - JPL/Bester Tracking Systems, Inc –Magnetometer - UCLA Received Draft Version

9. GSFC ST5 PDR June 19-20, 2001 20-9 Mission Assurance Requirements Contamination –Contamination Control Plan S/W –S/W Management Plan Configuration Control Quality Assurance Testing Performance Validation Matrix IV&V –MOA with Code 307 outlining the extent of IV&V