1. Charles Nola Lisa Blue June 21, 2006 Charles Nola Lisa Blue June 21, 2006 Crew Launch Vehicle (CLV) Upper Stage Avionics & Software Acquisition Planning Crew Launch Vehicle (CLV) Upper Stage Avionics & Software Acquisition Planning

2.  Baseline Approach - NASA leads Avionics System requirements, specification, architecture, and component specification development. NASA performs risk reduction for critical design areas. NASA maintains design lead role. Avionics Prime Contractor procures, integrates, and tests the Integrated Upper Stage Avionics System and transitions into production/flight phase.  NASA Team in-house development of Element Requirements Document (ERD), interface requirements documents, Avionics and Software System Specification, and Architecture, Component and Software Specifications, Upper Stage Avionics Design Definition Document  NASA performs risk reduction responsibilities for critical Avionics design decisions  Avionics Prime Contractor is brought on, through competition, four months prior to US PDR, which provides an opportunity for collaboration on the component and software specifications. NASA leads the PDR.  The NASA Team maintains the overall responsibility for design while the Avionics Prime Contractor provides an integrated solution for procuring (or building), accepting, electrically integrating, and testing the Upper Stage Avionics System. Post DDT&E, the Avionics Prime Contractor transitions into production/flight phase.  NASA maintains lead for Flight Software Development and a planned transitions to the Avionics Prime Contractor prior to the first CLV Test Flight. NASA will augment their software workforce.  The Avionics Prime Contractor procures, electrically integrates, and tests Upper Stage Avionics System for MPTA and Upper Stage System Level Test (such as Green-runs) and all Flights within the period of performance of the contract. NASA transitions into traditional insight role. The Avionics Prime Contractor supports mechanical integration at MPTA.  Upper Stage Prime delivers Instrument Unit Structure and the Avionics Prime Contractor performs mechanical integration of Avionics at MAF.  The Avionics Prime Contractor procures, electrically integrates, and tests Upper Stage EGSE for Systems Integration Laboratory (SIL), MAF, any required for Launch Processing  Options: Development Flight Instrumentation remains in-house NASA DDT&E  Baseline Approach - Upper Stage Office is delegated responsibility from Vehicle Integration Office for CLV Stack (Element to Element) Electrical Integration and Verification  NASA team with augmented workforce develops verification plans, procedures, and performs electrical integration and verification Upper Stage Avionics & Software System Acquisition Strategy

3. Software CEV SIMULATION GOE SIMULATION Upper Stage Engine Avionics Components First Stage Avionics Components Acceptance Test Upper Stage Avionics HWIL Engine Avionics HWIL First Stage Avionics HWIL DDT&E (Government Insight) Systems Integration Laboratory (SIL) Software SDF (Flight Software) SITF Production/Flight (Gov Project Office) Vehicle Checkout First Stage EGSE Engine EGSE Upper Stage EGSE Instrument Unit GOE (EGSE) Stage Checkout Component End Item Specification Acquisition Acceptance Shelf Qualification Test Certification Test Component End Item Specification Acquisition Acceptance SDF (Flight Software) SITF DDT&E and Production Roadmap Component Certificate of Qualification Avionics Prime Contractor Government Team Software CEV SIMULATION GOE SIMULATION (Flight Software) System Integration Laboratory (SIL) US EGSE FS EGSE Multi-Line Test Operations Upper Stage Avionics Components

4. CARD Exploration SRD Human Rating Plan Design Reference Missions Constellation ConOps Constellation T&V Plan Avionics and Software Trade Studies NASA NPR Requirements & NASA Standards Constellation Working Groups (e.g., C3I) CLV ConOps NEDD & DSNE CLV Avionics System Requirements Flow Upper Stage Design Definition Document CLV Avionics Architecture Definition Document NASA In-house Team Products This document is required at RFP release (NASA responsibility)

5. Upper Stage Integrated Roadmap US PDRUS CDRUS SRR Mfg Process Development Structural Development Test Articles Flight Avionics Hardware Design Fab Avionics Qualification Units Flight Unit Flight Avionics Design Verification US DAC-1 US DAC-2 US DAC-3 US DAC-4 US DAC-5 SIL Testing – MPTA, Upper Stage Avionics System Integration Avionics & Software Development US SDR Ground Tests Flight Tests US DCR RCS Advanced Development TVC Advanced Development MPS Advanced Development Flight Unit Battleship Stage Pathfinder Vibration Structural Test Article Upper Stage Avionics Flight Units Award RFP Release Solicitation Eval Avionics System DDT&E, Production, and Operations Support Avionics Production Contract  Avionics Prime Contract  Producibility Support  Avionics Component Acquisition, Acceptance,  Integration and Checkout  Avionics Component and EGSE Sustaining Engineering  Flight Software Sustaining Engineering SWRRPDRICDRCDR Av Component Dev Testing Award RFP Release