Oculus-ASR. Spring Jake LaSarge Project Manager, Oculus-ASR

Transcription

1 Oculus-ASR Spring 2012 Jake LaSarge Project Manager, Oculus-ASR David Kiekintveld Lead Systems Engineer, Oculus-ASR 18 APR 2012 Advisor: Dr. Brad King 1

2 Mission Statements The Oculus-ASR mission will: [MS-1] Provide calibration opportunities for ground-based observers at the Air Force Maui Optical Site (AMOS) attempting to validate and/or anchor algorithms capable of determining spacecraft attitude and configuration using unresolved optical imagery. (i.e. Space-Based target for ground Telescopes) [MS-3] *Provide data and images with a space imager for SAIC. 2

3 Mission: Space Situational Awareness Space Situational Awareness means knowing the location of every object orbiting the earth, active or inactive, big or small; and knowing why it is there, what it is doing right now, and what we think it will be doing in the future. Lt. Col. Jim Shoemaker, USAF With increasing orbit altitude and decreasing telescope aperture, orbiting objects become unresolvable. Most space objects are unresolvable from the ground. Can we determine a satellite s attitude and detect shape changes from the ground using only information gained from unresolved optical images? 3

4 The dot of light contains spectral information Bare Yellow Red Color and brightness of the unresolved images Blue Rotating Box in space as a point of light Brightness changes over time as the box rotates Can they determine the satellite s pointing direction and spin rate by measuring the reflected light? 4

5 Spectral Characterization by AFRL Oculus-ASR can expose spectrally different materials to ground observers, and release spherical objects Need a ground, photo-based Truth Model UNP-6 FCR 5

6 Oculus-ASR Mission The Oculus-ASR Maneuver Commands Data UPLOAD Space Segment Observed from Ground Data DOWNLOAD Maneuver requests MTU Ground Station Truth Data Transfer Ground Segment Air Force Maui Optical Site (and other AFRL ground-based facilities) 6

7 University Nanosatellite Prgm University Nanosatellite Program Run by US Air Force We ve done well 3 rd Place twice in the past We won UNP-6 (!) We are planning to join UNP-8 Student Built Satellite Useful Mission Limited Budget Work/Telecon with AFRL Gain useful industry experience

8 Design: Requirements Verification Our RVM has ~300 Requirements When All Requirements are met (Green), we are done. RVM Features: Traceable Requirements Mission Statement *Flowdown* 3 Status Levels (Green, Yellow, Red) Gates Means of Status Change Each *gate* requires documentation to pass Documentation from defined test 8

9 Design: Requirements Verification 9

10 Components Verification 10

11 Project -- Current Events Flight Structure Proving all Hardware & Software Clean Room Establishment System Integration/Wiring Subsystem Tests (vibes/thermal/functionality) Meet AFRL Deadlines and Tasks

12 RVM Statistics Subteam # Reqs %Red %Yellow %Green GNC 6 66% 33% 0% Imaging 2 50% 50% 0% Comm 8 87% 13% 0% Power 15 40% 60% 0% OBDC 11 None 91% 9% Software 31 77% 23% 0% Systems 58 81% 5% 13% Structure 26 27% 73% 0%

13 RVM Statistics Over Time

14 Dashboard CVM Component Statuses Component -- Status -- Next Step Magnetometer -- Dev Phase Document Submission & Review Translator Brd -- Dev Phase -- Acquire official trans board from SAIC Gyroscopes -- Silver Phase Gold on the way Radio -- Dev Phase -- Should return to us shortly Frangibolts -- Silver Phase -- Waiting for actuator/bolt arrival Power Brd -- Dev Phase -- Verify schematic and populate CC -- Dev Phase -- Verify component group functions Sensor Circt -- Dev Phase -- Board Design OC-1 CPU -- Gold Phase -- Gold should Arrive Soon OC-2 CPU -- Gold Phase -- Finish Testing Antennas -- Dev Phase -- Acquire New Antennas Mag-Torquers -- Silver Phase -- Move to Gold Silver Tests SAIC Imager -- Gold Phase -- SAIC Recommendations Solar Cells -- Gold Phase -- Layout & Pilot Run ABSL Battery -- Gold Phase -- ABSL should be shipping very soon Releasables -- Gold Phase -- Release test with flight spec frangibolts

15 Oculus-ASR Design Oculus-ASR (Mk. I) Oculus-ASR (Mk. II)

16 Oculus-ASR Structure ASR Side Panels Deployable Panel: Blue Frangibolt: Red Hinge: Green Frangibolt actuator to deploy panel. Simple flat spring located in hinge will provide a small force to open the panel. Anodized with different colored coatings One panel is coating in Duraflect 16

17 Oculus-ASR Releasable Design Releasable SphereSats Material: 6061-T6 Aluminum Separation Mechanism: Frangibolt TiNi Aerospace FC SR2 Spherical design chosen to accommodate ASR needs Imaging small object in close proximity to nanosatellite Will serve as resident space objects for the Oculus-ASR to image ( 17

18 Subteams How we Operate Project Break down: Systems Structures Comm Power Guidance, Nav, Control (ADAC) OBDC (C&DH) Software Imaging

19 SUBTEAMS: Structures

20 Structures Team Mechanically Inclined Design/Model components Mill components Assembly of Satellite Finite Element Analysis Modal Analysis Thermal Analysis

21 Systems Team Team Leader: David Kiekintveld

22 Imaging Subsystem System Hardware

23 Guidance, Navigation & Control TL: Alex Hirzel

24 Power

25 On-Board Data & Command / Software Team Software Team Leader Brandon Riggin (EE/CpE) rbriggin@mtu.edu OBDC Team Leader Branden Ghena (EE/CpE) brghena@mtu.edu Team Members Trevor Duetsch CS Colleen Johnson CpE Nathan Scowcroft SE Adam Funkenbusch EE/CpE Kevin Coleman CpE Hurricane Hamilton CS Sean Thorpe SE Chris Rickerd CpE

26 COMMMUNICATIONS TEAM TL: Andy Mauragis 9/19/2012 Oculus-ASR: Communications 26

27 Ground Operations Operations Houghton, MI (operators) Experimental or Amateur Licensing NORAD ephemeris data for location Software Nova Tracking Software Ground station software partially written Ground Station Status Collaboration with Husky Amateur Radio club Hardware Primary Yaesu FT-857 Transceiver Kantronics KPC TNC Modem UHF/VHF dual band Yagi, linear polarization Secondary MicroHard MHX GHz 24dBi parabolic dish, -3dB beam width ± 8 off bore sight, linear polarization

28 Path Forward What is left to do? Plenty.

29 Questions?