Section 4.0 Electrical Systems

1. 5 Space Technology GSFC “Tomorrow’s Technology Today” Section 4.0 Electrical Systems Section 3.0 Project Introduction Dr. Douglas D. McLennan Project Manager ST5 PDR 6/19-20/01 ST5 PDR June 19-20, 2001

2. Project Mgr: Doug McLennan Deputy Project Mgr: Rob Lilly Mission Business Mgr: Tracy Parlate Project Secretary: Denise Gramlich Project Scientist: Jim Slavin Chief Tech/Systems Mgr: Eric Finnegan System Eng: Jamie Esper (Swales) Parts Eng Lead: Bruce Meinhold (J&T) Parts Eng.: Norman Siddigi Reliability Eng. Lead: Walter Thomas Contamination Control Mgr.: Sharon Straka Radiation Eng. Lead: Christian Poivey Radiation Eng.: Bryan Fodness Systems Assurance Manager: Ron Perison System Safety Engineer: Rick Stickle (SRS) Configuration Manager: Paula Everson (Boeing) Ground Systems/MO&DA Irene Bibyk Observatory/I&T Manager Eric Krupacs Launch Vehicle Manager Clyde Woodall Mission Ops Eng: Steve Odendhl (Honeywell) SatTrack COTR: Rodger Able KSC Launch Serv: Garrett Skrobot Elecl & Harness Lead: Walter Bradley (Orbital) CCNT Tech Lead: Eric Finnegan C&DH Lead: George Jackson Flight S/W Lead: David Leucht EPD Instr Lead: William Browne Propulsion Lead Mike Rhee Elec Systems: M. Davis Electrical Eng: J. Caldwell Flex Harmess COTR: R. Lilly Electronic Eng: D. Raphael FPGA Eng: T. Winkert CULPRIT COTR: P. Lures GPS Eng: J. Simpson I&T Lead: Tom Gostomski RF Comm Lead: Victor Sank (QSS) GN&C Lead: Sam Placanica FLASAT/EGSE Eng: EJ Bickley Verification Mgr.: J. Smith Power Lead: Karen Castell Thermal Lead: Donya Douglas RF Comm. Eng: S. Smith (QSS) Transponder COTR: D. Israel Magnetometer Eng : A. Russo Flight Dynamics Eng.: M. Concha ACS Design Eng: M. Woodard ACS Design Eng: J. Morrissey Notation Damper Eng : N. Rubin Sun Sensor Eng.: F. Witten Solar Array Eng: J. Lyons Power Elec. Eng.: A. Hernandez-Pelle Li-Ion Battery: K. Castell Var-E COTR: T. Swanson Mechanical Lead: Peter Rossoni Mech Eng: C. Collins Project Organization Chart As of: 0501 ST5 PDR June 19-20, 2001

3. Internal Web Page • Address: st5.gsfc.nasa.gov • Intranet Page - outside access by approval only Contents: Requirements Matrix Configuration Mgmt Drawing Mgmt Working Documentation Electronic Library Risk Mgmt RFA Tracking Project Status Educational Outreach ST5 PDR June 19-20, 2001

4. Systems Concept Review • Completed May 10 and 11, 2000 • Resulted in 104 Request for Actions (RFAs) • RFAs remaining will be closed as a result of this PDR • Disposition of all RFAs located in SCR binder and on the ST5 Web Page (st5.gsfc.nasa.gov) • SCR Presentation located in SCR binder and the ST5 Web Page ST5 PDR June 19-20, 2001

5. Peer Reviews SubsystemDate Launch Vehicle MidTerm Review (Boeing &LM) January 16-17, 2001 Delta Transponder PDR January 31, 2001 Variable Emittance Coatings PDR March 7, 2001 Systems Peer Review March 29, 2001 Launch Vehicle Final Review April 4-5, 2001 Deployable Subsystems Review April 17, 2001 PSE Schematic Review April 26, 2001 Thermal Peer Review May 4, 2001 GN&C/Propulsion Peer Review May 18, 2001 Mechanical Peer Review May 18, 2001 I and T Peer Review May 21, 2001 Communications Peer Review May 31, 2001 Power System Peer Review May 31, 2001 Safety Review Board May 31, 2001 CCNT PDR June 27, 2001 Electrical Peer Review July 2001 Mission/Ground Operations Peer Review August 2001 C&DH Peer Review August 15, 2001 Flight Software Peer Review September 2001 Transponder PDR October 19, 2000 ST5 PDR June 19-20, 2001

6. 2001 2002 2003 CY Activities CM J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D PER LRD PSR Selected Mission Milestones PDR CDR Sim / BB / EM Configurations FlatSat * C+DH BB * PWR BB * CCNT Sim and EM * DSS Sim * Thruster Sim * Magnetometer Proto SubSystem Development SubSystem Simulators, Bread Boards (BB) , Engr Models, and Engr Test Units (ETU) Dsgn , Fab , Assy , and Test * Xponder / Rcvr Sim * VEC BBs * Flt S/W Build 1 * GN+C Sim * Prototype Structures, Deployer , and Mechanisms Facilities, GSE, Harness’s , + Procedures Facility Ready and Procs Complete * ASIST Rev 2 Initial Simulations, Bread Boards, and Engr Models I+T Sims , BBs , and EM I + T (Validates Technology Maturity, Flight Software, Ground Software, and Hardware Test Bed Bus Compatability ; and Flight S/W, H/W, and Sim and Bread Board Testing Verifies: Ground Systems Compatibility) * Power On/Off Procedures * Command and Telemetry Interfaces * Initiates STOL and TLM Page Development * Enables Virtual Recorder Data Play Back * CGS Timing Test Observatory Flight Unit # 1 FU’s 1, 2, + 3 Subsys Fab , Assy , + Test Subsystem Deliveries Flights 1, 2, and 3 FU #1 Environmental Test Program Observatory # 1 Subsystem/ Instrument Integration * EMI/EMC Testing S/C Compatability Tests I + T * Magnetic Tests Flight and Ground Software Test Bed * 3 Axis Vibration Test Observatory # 1 Environmental Tests Env’l Tests * Shock Test * Thermal Balance /Thermal Vacuum Tests * Spin Balance and Mass Properties * RF Compatibility Testing Observatories # 2 + # 3 Observatorys’ #’s 2 + # 3 Subsystem / Instrument Integration I + T Constellation Test Env’l Tests Observatorys’ # 2 + # 3 Environmental Tests FU #s 2 + 3 Environmental Test Program * EMI/EMC S/C Compatability Tests * Vibration and Shock Tests * Alignments/Deployments Schedule Reserve 2.5 Months * RF Compatibility Tests Schedule Reserve * Thermal Vac Test…No Thermal Balance * Spin Balance / Mass Properties * Magnetic Test BP + S / Launch Operations Launch as of May 22, 2001 Project Master Schedule ST5 PDR June 19-20, 2001

7. Project Unique Characteristics • NMP Mission with Validation Requirements • S/C is a key “Technology” for future constellation missions • Our design strikes a balance between validation needs and future micro-satellite bus development • Power Management • Use of Geo-transfer Orbit ST5 PDR June 19-20, 2001