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Status Review

Status Review. Overview. Order Status VHF/UHF Radio Electronic Power System Solar Arrays Random Stuff from Pumpkin Flight Module 31mil PCB Clips FAT File System Random Stuff for Testing Test Pod Thermal Blanket Solar Panel PCBs at 31mils Timeline Where We’ve Been

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Status Review

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Presentation Transcript

  1. Status Review

  2. Overview • Order Status • VHF/UHF Radio • Electronic Power System • Solar Arrays • Random Stuff from Pumpkin • Flight Module • 31mil PCB Clips • FAT File System • Random Stuff for Testing • Test Pod • Thermal Blanket • Solar Panel PCBs at 31mils • Timeline • Where We’ve Been • When We Plan on Arriving

  3. UHF/VHF Radio • Supplier: StenSat • Two Units thus Far • 250mW : Received September 22 • 1000mW : Ordered August 25 • Pending Unit • A prototype transmitter is working on the bench • 2000mW ERIP (5V, 770mA, η at over 50%) (production adjustable) • Second prototype TX board at StenSat November 6 • Changes to be incorporated into CubeSat circuit card after checkout • Requires complete redesign of circuit card • New parts in design • Some parts from old design now obsolete • Looking Ahead • StenSat needs to know our TX/RX frequencies • No estimated time of arrival given

  4. Electrical Power System • Supplier: Clyde Space • Pending Unit • Complete (November 6) • 2nd stage power conversion tested • Bus over-voltage protection and manual reset • Battery system (sensor, heater, battery) • Left to Do • I2C interface in testing • Multiple Peak Power Tracking (MPPT) • Looking Ahead • MPPT parts are the current hold-up (expected mid-November) • Can get a unit without MPPT today (if we want it that bad) • Prototype available December 1 • Fight units available February 1

  5. Solar Arrays • Supplier: Pumpkin / KySat • Pending Unit (Pumpkin) • Order placed sometime over the summer • Delivered 1/3 of order (one of the three faces of the cube) • Will not deliver others until a test is conducted of first face • Pending Unit (KySat / Knight Electronics) • Artwork for Pumpkin layout captured from Andrew • Very tough format to work with • Handed to local board-house for manufacturing • Looking Ahead • Expected delivery from Knight Electronics is Monday 27 November • Pumpkin status??? • Parts list captured for Pumpkin units • Schematic captured for Pumpkin units

  6. Random Stuff: Pumpkin • Supplier: Pumpkin • Flight Module • Current on-hand revision (B) does not have a working SD/MMC interface • Lead time “a few weeks” last time mentioned (August 13) • Pings placed for further information received no return • Solar PCB Clips • Clips for 31 mil boards likely will never be available • Suggest shimming 62 mil clips or spot-welding spacers onto them • FAT File System • Pumpkin distributing for hcc-embedded • Huge discount (90%) • Tests in progress at Pumpkin but “not working” • Andrew at TI developers conference in Dallas last week • No expected delivery date given

  7. Random Stuff: Testing • Vibrations Test Pod • Many conversations had with Twiggs and CalPoly management • 1st choice: CalPoly 1U “vibe unit” • 2nd choice: Stanford’s 3U P-POD • Thermal Blanket (heat and cool in vacuum chamber) • Mail sent back and forth to CalPoly since August • No details on thermal – only vac • Another ping sent November 6 with no response

  8. Where We’ve Been • February – KySat ball rolls for the first time • May 24 – Consortium press conference • June 12 – Tech Team immersion experience • Stanford interactions • NASA Ames interactions • High percentage of time-on-task • August 9 – KySat Briefing & Status Report • August 19 – Return to Kentucky • Beginning of distributed work-effort • November 1 - Kentucky University Presidents Meeting

  9. When We Plan on Arriving • December – Engineering model complete • December – Base-level functional flight software complete • January – KySat 2 team comes onboard • February – Ground stations up and tracking • March – Flight software completed • April – Flight model complete • May – Thermal and Vac final tests • June – Operational testing • July – Shipment to launch-integrator • August thru November – Monitor CalPoly testing • December 07 – On Orbit!

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