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JPL Flight Team

JPL Flight Team. Adam Nikolic Josh Ruggiero Bob Hoffman Dusty Terrill. Completed so far. Schedule Initial research Architecture Description System requirement document Created CVS Server System design. Schedule - Done. Schedule - Not Done. Initial Research.

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JPL Flight Team

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  1. JPL Flight Team Adam Nikolic Josh Ruggiero Bob Hoffman Dusty Terrill

  2. Completed so far • Schedule • Initial research • Architecture Description • System requirement document • Created CVS Server • System design

  3. Schedule - Done

  4. Schedule - Not Done

  5. Initial Research • Standards and requirements • CCDCS for communication • IEEE 1471 for architecture description • VML2 • Basics of space flight • Satellite components and configuration • Orbit patterns and flight mechanics

  6. Architecture Description

  7. Flight Requirements: The flight system shall track and analyze changes in terrestrial features The flight system shall use a 5-10m resolution The flight system shall moderate cost The flight system shall use 1500 x 1500 picture resolution The flight system shall be able to take visible and infrared images The flight system shall accept targets from Mission Control The flight system shall create flight path from Mission Control targets The flight system shall send health/status information to Mission Control The flight system shall use JPEG image format The flight system shall send an image to Mission Control once it has been taken image The flight system shall send the following information as health/status information: Fuel (Kg/g), Velocity (km/s), Altitude (km), Battery Power (mW), Power Consumption (mW/H), number of reads, number of writes, how much free memory (GBytes), and position (spherical coordinates). The flight system shall accept image request from Mission Control The flight system shall accept a request for a TIFF or BMP image from Mission Control and then send the specified image format. The flight system shall minimize power usage The flight system shall design a propulsion system The flight system shall design a navigation system System Requirement Document

  8. Memory – 2 separate memory modules (assuming 1 million writes per module) Maximum bmp memory – 2MB Status info/data Fuel (Kg/g) – (Capacity 26Kg) – 15 bits Velocity (m/s) – (Max around 7600 m/s) - 13 bits Altitude (km) – (900km max height) – 10 bits Battery Power (mW) – (850W x 2 batteries) – 11 bits Power Consumption (mW/H) – (max can use is 1700) – 11 bits number of reads – (3 million reads) – 22 bits number of writes – (1 million writes x 2) – 40 bits Position (spherical coordinates) – (max 360°) – 9 bits ground control commands – (Location to move to) – 24 bits Power – Power consumption info Four deployable, fixed solar panels and one body-mounted panel contain 3.4 m2 of solar cells and provide 230 W/hr of orbital average power 2 batteries (.5 m3) each provide 850W/hr power, takes 3 hours to charge. Consumptions uses: -Antenna: 25W per transmission -CPU: 50W -Thrusters: 100W per course correction -Camera: 30W System design

  9. Left to do This Semester Finish overall system design Start working on UML diagrams Use cases and class diagrams Start making schedule for next semester Next Semester Code Code Code

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