Fernando Aguado-Agelet University of Vigo - INTA
August 10th 2008 2008 Cubesat Summer Developer’s Workshop 1 Project Presentation GENERAL DESCRIPTION
University of Vigo: Leader Spanish university in R+D devoted resources 260 research groups, 50 European projects, 25 patents.
INTA: Public research organization specialized in aerospace research and technology development. Experience in aerospace with many national and international projects.
Both institutions have agreed to collaborate in the development of XATCOBEO.
3 Mission Description
XATCOBEO: design & development of a satellite as educational demonstrator based in OPTOS experience XATCOBEO SYSTEM: SPACE SEGMENT (Cubesat 1U) + GROUND SEGMENT + USER SEGMENT University of Vigo’s responsibilities: Educational matters Design and development of new technologies INTA’s responsibilities: Support in engineering and management AIV facilities and expertise Educational satellite system with professional reliability 4 Mission Description
Standards: CubeSAT Design Specification (Rev 10) ESA ECSS standards: Space Project Management (ECSS-M-00) Space Project Engineering (ECSS-E-00) Model Philosophy: PFM Mission objectives: To contribute to the CubeSAT community with: Qualification of a new deployment mechanism Qualification of a 2 payloads To integrate students in a CubeSAT development with high-end requirements Emphasis in working methodology (HOW is more important than WHAT)
5 GENERAL DESCRIPTION
XATCOBEO: Objectives
Design and development of: - CubeSAT satellite 1U (10x10x10cm) Weight < 1kg - Ground segment (at the University of Vigo) To involve students in a space project To learn work methods based on ESA standards New technologies incorporated (SRAD, RDS, PDM) Launching with VEGA at the end of 2009 6 GENERAL DESCRIPTION
SPONSORS Xunta de Galicia/Retegal (DIESTE agreement)
Department of Science and Investigation
Raminovatech raminova tech
7 PROJECT ORGANIZATION Project Organization • ORGANIZATION PROBLEMS ‐ Mixed teams INTA/UVIGO ‐ More than 40 people creating software, hardware and documents at the same time.
9 Project Organization • SOLUTION Hierarchical organization
Electronic Management
10 Project Organization • HIERARCHY 1. Tasks are split into WorkPackages (WP). 2. Each WP is assigned to a different team. 3. Each team is formed by: ‐ 1 supervisor ‐ 1 student responsible ‐ N members and cooperators
11 WP Distribution
XATCOBEO
10000 15000 20000 30000 40000 50000 60000 70000 PRINCIPAL MANAGEMENT ENGINEERING PRODUCT AIT SPACE GROUND OPERATIONS INVESTIGATOR ASSURANCE SEGMENT SEGMENT
11000 21000 CONFIGURATION FUNCTIONAL 31000 32000 41000 51100 51200 ARCHITECTURE HW PA SW PA EMC OBDH OBSW 51000 PLATFORM 12000 22000 PROCUREMENT MISSION ANALYSIS 51300 51400 51500 POWER THERMAL & TTC 13000 23000 STRUCTURE PROJECT TECHNICAL CONTROL SPECIFICATION 51510 ANTENNA 14000 24000 STUDENT LAUNCHER COORDINATION 51520 25100 25200 25300 TRANSPONDER POWER LINK SPACE BUDGET 25000 BUDGE ENVIRONMENT T 14100 14200 TECHNICAL STUDIES MASTER PHD 52100 52200 DEGREE DEGREE 25400 25500 SRAD RDS THERMAL MASS ANALYSIS BUDGET 52000 PAYLOADS
52300 PDM Project Organization • ELECTRONIC MANAGEMENT AGENDA
DOCUMENTS ELECTRONIC LIBRARY CODE
13 SPACE SEGMENT GENERAL DESCRIPTION
XATCOBEO: Subsystems (I)
MPPTPPT
SEP. SWITCH +X, -X S.A. Power: BATBAT..
CHARGE REG CTRL. MPPTPPT Lithium battery RBF SWITCH REG
Solar panels: 2 cells on each side +Y, -Y S.A.
OBDH System Software: SRAM Clock
C code FLASH FPGA Watchdog XC2V1000 and CONF. Latch-up Modes: Start-Normal-Communications-Safe EEPROM Control
Bus Protocol RS232 POWER Transceiver Debug PL/SS Power/Debug Computer: Connector Connector Microprocessor embedded in programmable logic device (FPGA)
15 GENERAL DESCRIPTION
XATCOBEO: Subsystems (II)
Communications: 4 antennas (TBC), omnidirectional radiation diagram Uplink for telecommands, downlink for telemetry, in ham radio frequencies
Antenna Deploy Thermic: System Passive thermic control RX TNC ob dh Paints and insulating materials TC Conductive materials depending on cases TX TM Structure and mechanisms: Structure: CubeSAT 1U Mechanism of deployment of antennas
16 GENERAL DESCRIPTION
XATCOBEO: Experiments
Payloads: Software RADio board for communications (SRAD): 9Software radio that can be configured on board Radiation Dose Sensor (RDS): 9Sensor to measure radiation
Panel Deployer Mechanism (PDM): Try out on board a mechanism of deployment
17 RDS Overview
•Sensor to measure the total accumulated radiation dose.
•It is based on commercial RADFET technology SRAD OVERVIEW
A/D Radio Control RF Frontend FPGA Subsystem Logic System D/A Bus
ISF
RAM / ROM SRAD
Software modules HW Control A/C Modules IP Routines System RF Frontend (Encoding D/C Buffers Stack Bus and SBUS modulation) Reconf. Soft Processor Routines
Predefined radio Schemes and Modules (Standard modules & Free Space Backup modules) GROUND SEGMENT Ground Segment
XATCOBEO: Ground Segment
Located at the University of Vigo: Students will be the operators of the satellite
Three main parts: System Control Center (SCC) Operation Center (OC) Distribution Center (DC)
Additional software required to operate payload SRAD
22 Ground Segment
23 Ground segment – SRAD
User interface SRAD Control SRAD Instruction Routines IP Set STACK RF Frontend
Software Host Conclusions
Educational development professional results:
Two different geographical teams: Managment
New technology qualification Improvement in power availability (SPAD) Developing a new TTC kit for CubeSatellites (SRAD) RDS: Radiation Dose Sensor. TO TEACH Main Xatcobeo payload STUDENTS A WORKING METHODOLOGY Some Pictures
26 27 28 29 Fernando Aguado-Agelet: [email protected] University of Vigo - INTA
August 10th 2008 2008 Cubesat Summer Developer’s Workshop 30