1 CAN WE TURN A PHONE IN TO A SATELLITE? Android Open 2011 San Francisco,10th Oct. 2011
Mar 26, 2015
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CAN WE TURN A PHONE IN TO A SATELLITE?
Android Open 2011 San Francisco,10th Oct. 2011
Why Phone Based Why Phone Based Satellite?Satellite?Status quo:•Typical satellite costs: $500m•‘Low Cost’ satellites: $10m
But…•All key capabilities of a satellite are in a phone•A cell phone based satellite costs ~$5k in parts •Launch for a 1U = $50-70k
With a 100x reduction in cost, could there be a vast array of new potential applications?
Android Open 2011 San Francisco, USA
TechnologyTechnologySatellite SmartPhone
Computer systemProcessor /Memory /
Power systemBattery /Solar Arrays X
StructureStrong frame /
ADCSAccelerometers /Rate Gyros /Magnetometers /Sun sensor ?GPS /Reaction Wheels XMagnetorquers X
CommunicationsRadio /
PayloadCamera /
Android Open 2011 San Francisco, USA
Phone(Nexus One)
Core
VHF/UHF Radio144/440 MHz
Likely Core
Extra
Battery Bank(12 x 18650 3.7V cells, 2800 mAh)
Legend
Monopole Antenna
RBF and Deploy. Switches
(Custom PCB)
Spacecraft 1.0Concept A•With UHF radio•& Hardware battery override•& Watchdog/Lazerus
Watchdog/Lazerus
(Arduino)
Power
Data
PhoneSat 1: System Architecture
Phone software overviewPhone software overview
• Android 2.1 Operating System
• Help from several Googlers on their 20% time:• Image compression algorithm• Serial data port
• Open Source Project (HW and SW)
Android Open 2011 San Francisco, USA
Space Qualification Space Qualification TestingTesting
Android Open 2011 San Francisco, USA
Vacuum and Thermal Vacuum and Thermal TestingTesting• 10-3 torr• -30° up to +40°
Celsius
• 1 Gyroscope• 1 Nexus One mobile
phone• 1 Motorola mobile
phone
7/#
8/#
Rocket LaunchesRocket Launches
Android Open 2011 San Francisco, USA
LaunchesLaunches
“Rocket Mavericks”
• Flight 1: 23 July, 2010– 70 km Altitude Rocket (but did not reach altitude)– Our payload: Nexus One
• Flight 2: 24 July, 2010– 10 km Altitude Rocket– Our Payload: 2 Nexus One, 1 IMU, Arduino,
external Bluetooth
Android Open 2011 San Francisco, USA
Launch 1: high altitude; Launch 1: high altitude; failfail
Android Open 2011 San Francisco, USA
Launch 2: successLaunch 2: success
Rocket Details:10 m tall500 kg
Actual:- 9 km- 10 G (>1000 G
on impact)
Planned for:-70 km (18 sec burn)-12-15 G
Android Open 2011 San Francisco, USA
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Balloon LaunchesBalloon Launches
Android Open 2011 San Francisco, USA
Next StepsNext Steps
Launch 3x PhoneSat 1.0 in DecemberLaunch 3x PhoneSat 1.0 in December• Taurus II --> 280x280km orbitTaurus II --> 280x280km orbit• Duration 3 weeksDuration 3 weeks• Launch Cost: $250kLaunch Cost: $250k
Launch 1x PhoneSat 2.0 in June 2012Launch 1x PhoneSat 2.0 in June 2012• Falcon 9/Dragon --> 450x300km orbitFalcon 9/Dragon --> 450x300km orbit• Duration: 3-6 monthsDuration: 3-6 months• Cost: free through ELaNa programmeCost: free through ELaNa programme
Android Open 2011 San Francisco, USA
First Flight First Flight RequirementsRequirements
Minimalist requirements for first mission:1. Send 1 image taken by the phone to ground 2. Parts cost shall not exceed $10,0003. Work for >1 orbit4. Send minimum health data from phone to ground5. Schedule <3 months from ATP to flight readiness
Android Open 2011 San Francisco, USA
PhoneSat 1.0
And, what if sats cost And, what if sats cost $10k?$10k?
HeliophysicsHeliophysicsMissions to space test hardwareMissions to space test hardwareSwarmed satellitesSwarmed satellitesRemote Sensing?Remote Sensing?Personal Satellites?Personal Satellites?……
Android Open 2011 San Francisco, USA
VisionVision
… … Space as a software domain?Space as a software domain?
Android Open 2011 San Francisco, USA
Questions?
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Have ideas? Have ideas?
Contact: [email protected], [email protected], Contact: [email protected], [email protected], [email protected]@google.com
SW REPOSITORYhttps://github.com/cboshuizen/AXCS
QUESTIONS?