1 can we turn a phone in to a satellite? android open 2011san francisco,10th oct. 2011
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1
CAN WE TURN A PHONE IN TO A SATELLITE?
Android Open 2011 San Francisco,10th Oct. 2011
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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
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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
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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
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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
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Space Qualification Space Qualification TestingTesting
Android Open 2011 San Francisco, USA
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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/#
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8/#
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Rocket LaunchesRocket Launches
Android Open 2011 San Francisco, USA
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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
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Launch 1: high altitude; Launch 1: high altitude; failfail
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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
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Balloon LaunchesBalloon Launches
Android Open 2011 San Francisco, USA
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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
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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
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PhoneSat 1.0
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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
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VisionVision
… … Space as a software domain?Space as a software domain?
Android Open 2011 San Francisco, USA
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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?