ITU pSAT II ADCS : Getting Ready for Lauchmstl.atl.calpoly.edu/~bklofas/Presentations/DevelopersWorkshop2011... · ITU pSAT II ADCS : Getting Ready for Lauch. ... Project

ITU pSAT II ADCS :Getting Ready for Lauch

Asc. Prof. Gökhan İnalhan, Elgiz Başkaya,Emre Koyuncu ve ITU.CAL personnel

Industrial Project

• Fundamental Industrial Projects– DPT– ASELSAN– SSM, BİLUZAY

İTÜ LCH AVIONICSARCHITECTURE

İTÜ ASELSAN HTD

İTÜNetwork Mission Simulator

MSc/PhD Research

Path planning in 3D at realtime

UAVs

Nonlinear Autonomous Flight ControlsFor Agile Maneuvering

Spacecraft Design

İTÜpSAT I

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Design– İTÜ pSAT I

• First university research satellite of Turkey.– Payload and Objectives:

• Passive Magnetic Stabilization• Low resolution image, • Inertial measurements and • Telemetry capturing

CMOS Camera

Sensor

Board

Passive Magnetic Stabilization

Power Board

Transceiver On Board Computer

Production Phasing

Design and Prototyping – Desktop Models

Analysis and Testing –Engineering Models

Launch – Flight ModelsOrbit 720 km sun-synchronous

Subsystems of ITU pSAT I

CMOS Camera

Sensor Board

Passive Magnetic Stabilization

Power Board

Transceiver On Board Computer

Mass : 995 mgPower : 6 WCurrent : 1.5 A

System Integration

• Clean Room (Class 1000) : 25 meter square– Embeds the thermal

vacuum chamber also• Clean Room (Class 10000)

: 8 meter square– For experimental and

educational purposes

Typical Test Scenario

Rubin 9.1, Rubin 9.2, UWE-2, Beesat, ITUpSAT1 and Swisscube

PSLV C-14 : Launch 23.09.2009POLAR SATELLITE LAUNCH

VEHICLE (PSLV)

Current Status of ITU pSAT I

• ITU pSAT I is alive and kicking even though we had a major ground station problem with– the modem malfunctions and – the software resets

• Clear beacon and health status bits• Many thanks to people all over the world who

are still keeping track of ITU pSAT I– US, Germany, Italy, Norway, Japan, amateur radios

all over Turkey.... To name a few....

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Project Realm

SatelliteDesign / Analysis / Production

Ground StationAmateur Band

CubeSAT Network

Test & IntegrationInfrastructure / Payloads

/ Systems

Thermal Vacuum, Vibration, EMC

Training Spacecraft Systems Design

TUBITAK 108M523

• The second nanosatellite project coming fromITU.CAL– Development of a High Performance Bus for Nano Satellites wıth

Attitude Control

Design Philosopy

• This project aims to develop a 3-axis controlledstandardized platform (bus and payload interfaces) for pico and nano sized satellites (1-10 kg) for application such as– On orbit test and verification

of new electronic, controls and material technologies

– On orbit scientific experiments

– Medium resolution imaging (scale of 50m-500m)

The Bus

• A unique bus based design– Structured around a CAN Bus

and the cubesat kit bus– Flexible and scalable across

form factors

• Bus consists of mostly in-house, in-development parts– OBC– EPS– ADCS– COM (UHF)– Payload Interface Unit (PLIU)

Bus Components

BUS•OBC : Aerocon NanoOBC I•Comm : AstroDev Li-1 UHF Transceiver•EPS : Gomspace QBP4 and P30U •Solar Panels : Gomspace NanoPower Solar Panel 1ea P100U, 1ea P100 and 3e P300Us•Structure : AeroconNano 3U STR•Mechanisms : Aerocon MagBoom 3U , Aerocon AntBoom 3U•Bus and cable bunde : Aerocon

Satellite Structural Design

Inside View Outside View

In orbit...

Structural Components

GPS Patch Antenna

GPS Receiver

Li-1 Radio

EPS Board

Battery Board

Sensor Board

EHF Transponder

EHF Patch Antenna

Camera

Reaction Wheels

Magnetoboom

Magnetorquers

Deployable Antennas

S-Band Patch Antenna

Payload II : ADCS

• Payload II : Aerocon NanoADCS I– ADC Computer : Aerocon NanoADC Computer I– Reaction Wheels : Aerocon NanoRW I– Magnetotorquer : Gomspace – GPS : SSTL SGR05U with patch antenna– Sensors :

• Magnetometer Honeywell HMR 3300• Inertial Sensor Analog Devices ADIS 16405• Photo diode X 5 ( 1 useless) Gomspace (on the solar panels)• Gyro X 4 Analog Devices ADIS 16251 (on the solar panels)• Temperature Sensor X 5 National Semiconductor LM70 (on the solar panels)

Payload I and III

PAYLOAD•Primary Payload I : Aerocon NanoCam I•Payload II : Astrodev Be-1 S-Band Transmitter

Camera : Primary Payload

SONY NEX-5Dimensions; 110.8 x 58.8 x 38.2 mmWeight (with Battery and Memory Card) 239 gLens Mounting Compatibility; Sony E-Mount, 16mm, 18-55mm, 18-200mm

ADC SIL/HIL

ADCS Algorithmic Framework

Detumbling Mode

Project Realm

SatelliteDesign / Analysis / Production

Ground StationAmateur Band

CubeSAT Network

Test & IntegrationInfrastructure / Payloads

/ Systems

Thermal Vacuum, Vibration, EMC

Training Spacecraft Systems Design

UUBF Ground Station

• UHF-VHF Bands• Amateur Radio

New Ground Station

440MHz uplink/downlink S-band downlink High attitude accuracy Two options:

USRP: Software Defined Radio

Commercial radio option

Project Realm

SatelliteDesign / Analysis / Production

Ground StationAmateur Band

CubeSAT Network

Test & IntegrationInfrastructure / Payloads

/ Systems

Thermal Vacuum, Vibration, EMC

Training Spacecraft Systems Design

Space Education

• Re-designed and gave the UZB422E Spacecraft Systems Design course (2006-2010)– Basically the last course for space engineers before

graduating from class.– First 7 lectures focuses on all the aspects of

spacecraft systems with project homeworks for the “Graduating Class Spacecraft Design Competition”

– Last 7 lectures focuses on building protoypes of major components...

New Generation of Aerospace Engineers

SSD Course

Phase A : Week 1-7Lecture 1 : Space Mission Concepts, and payload driven operations, Structured Approach to SSD, Space Environment, TestingLecture 2 : Orbit and constellation design, Propulsion Subsystem, Lecture 3 : Spacecraft Structures and Mechanisms, Power and Thermal SubsystemsLecture 4 : Spacecraft Communications; Command and Data Handling Subsystem,Lecture 5 : Spacecraft Attitude Determination and Control Subsystem, Guidance and NavigationSubsystem ElementsLecture 6 : Spacecraft Mission Operations, Ground Support, Launch Systems and LogisticsLecture 7 : Your project evaluations Interim : Week 8 : 2010 Best Design Selection Day.

Phase B : Week 9-14 This portion of the class will be driven by detailed subsystem analysis, verification and proof-of-concept construction with lectures covering a part of the class period.

Education– Spacecraft Systems Engineering

The winner of the 2007 Graduating Class ConceptualSpacecraft Design Contest

Desktop level proof-of-concept Hands-on development

Undergraduate students reach PDR level maturity in their designs

SSD – and the winner is .... 2009-2010