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Requirements Review

Requirements Review. Stanford AA236. 11 July 2006. Requirements Strategy. Non-Traditional Review Bridging ConOps and Existing Design is Difficult Create Minimal Set of Systems for a Satellite Prioritize All Systems Dual-Ended Approach Current Subsystems KySat Concept of Operations

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Requirements Review

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  1. Requirements Review Stanford AA236 11 July 2006

  2. Requirements Strategy • Non-Traditional Review • Bridging ConOps and Existing Design is Difficult • Create Minimal Set of Systems for a Satellite • Prioritize All Systems • Dual-Ended Approach • Current Subsystems • KySat Concept of Operations • Provide Focus • Limited Time to Complete KySat-1 • Required to Have Minimum Working System in August

  3. Critical Systems Frame Solar Panels Electrical Power System Batteries VHF / UHF System VHF / UHF Antenna Processor Board Required Systems Passive Attitude Control Mass Storage DTMF Decoder / Reset Real Time Clock / Backup Watchdog Timer Non-Critical Systems Camera S-band MP3 Decoder Chip Attitude Determination Active Attitude Control Separate Beacon Dosimetry Test SEU Test Deorbit KySat Requirement Priorities

  4. Frame Done – CubeSat Kit Solar Panels Yet to be Selected Power System Selected Need to Order/Evaluate Batteries Done VHF / UHF System Selected Need to Order/Evaluate VHF / UHF Antenna Big Issues Here Processor Board Done – CubeSat Kit Critical Systems

  5. Required Systems • DTMF Decoder / Reset • Decoder Selected • Need Back-End Logic, Front-End Conditioning • Mass Storage • FLASH Selected, Need File System • Passive Attitude Control • Material Selected, Unknown Orientation • Real Time Clock / Backup • IC Selected, Need PCB Designed & Built • Watchdog Timer • IC Selected, Need PCB Designed & Built

  6. Open Items • Bogota EPS • Errors in Documentation • Only Supports 5 Solar Panel Stacks • Full-Power Reset • Control Battery Heater • Over-Current Control • VHF / UHF • Wattage • AX.25 Non-Retransmit • APRS System Compatible

  7. Stanford AA236 11 July 2006

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