CANSAT Final Presentation June 15 th  2008
WildCatSat Team
Outline <ul><li>Design Overview </li></ul><ul><li>Raw Data Plots </li></ul><ul><li>Processed/Analyzed Data Plots </li></ul...
Mechanical Design  Overview <ul><li>System Bus: </li></ul><ul><li>ABS Plastic </li></ul><ul><li>Rapid Prototype using 3-D ...
<ul><li>Up-righting System: </li></ul><ul><li>Hinged side doors  </li></ul><ul><li>Torsion springs provide force to open d...
Structural Drawings
Electrical System  Diagram  Processor Pressure Sensor Transceiver Buzzer Servo Transceiver Computer
Electrical Design  Overview <ul><li>Sensors: </li></ul><ul><li>SCP1000 Barometric pressure and temp. sensor </li></ul><ul>...
<ul><li>Ground Station Computer: </li></ul><ul><li>HP Pavilion N5425 </li></ul><ul><li>Ground Station Receiver: </li></ul>...
Raw Data Plots
Processed Data Note: Matlab truncation of LS digit = loss in accuracy 0 20 40 60 80 100 120 140 160 180 200 8.4 8.6 8.8 9 ...
Processed Data (cont.) (Processed with Matlab’s ‘Diff’ and ‘Filter’ functions and window size of 10) From VTI Tech: “Assum...
Flight Operations <ul><li>Altitude Transmission:  Success  </li></ul><ul><li>Average Descent Rate:   3.3767 m/s </li></ul>...
Flight Operations  (cont.) <ul><li>Recovery:  Success </li></ul><ul><li>Up-righting System:  Success  </li></ul><ul><li>Gr...
<ul><li>Pattern Loss ~30% </li></ul><ul><li>Ground Absorption </li></ul><ul><li>Terrain </li></ul><ul><li>Ground Station A...
<ul><li>Satellite activated </li></ul><ul><li>Satellite loaded into rocket </li></ul><ul><li>Satellite takes initial press...
<ul><ul><li>UNH ECE Dept. </li></ul></ul><ul><ul><li>UNH ME Dept. </li></ul></ul>WildCatSat  Sponsors <ul><li>Jon Arlingto...
Questions? Professor May-Win Thein Project Advisor Ph.D Mechanical Engineering [email_address] Robert Terry Team Leader El...
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Cansat 2008: University of New Hampshire Final Presentation

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Final presentation by University of New Hampshire at CanSat 2008

http://www.astronautical.org/2008/06/15/cansat-2008-university-of-new-hampshire/

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Cansat 2008: University of New Hampshire Final Presentation

  1. 1. CANSAT Final Presentation June 15 th 2008
  2. 2. WildCatSat Team
  3. 3. Outline <ul><li>Design Overview </li></ul><ul><li>Raw Data Plots </li></ul><ul><li>Processed/Analyzed Data Plots </li></ul><ul><li>Outcome of Flight Ops/Failure Analysis </li></ul><ul><li>Comparison of Actual CONOPS to Planned CONOPS </li></ul>
  4. 4. Mechanical Design Overview <ul><li>System Bus: </li></ul><ul><li>ABS Plastic </li></ul><ul><li>Rapid Prototype using 3-D Printer </li></ul><ul><li>Recovery System: </li></ul><ul><li>Octagonal Parachute </li></ul><ul><ul><li>Rip-Stop Nylon </li></ul></ul><ul><ul><li>Area: 1.016 m 2 </li></ul></ul><ul><li>Nylon Cord </li></ul>
  5. 5. <ul><li>Up-righting System: </li></ul><ul><li>Hinged side doors </li></ul><ul><li>Torsion springs provide force to open doors </li></ul><ul><li>Pin connected to servo motor holds doors in place/releases doors </li></ul><ul><li>Parachute Release System: </li></ul><ul><li>Pin attached to side door </li></ul><ul><li>Pin holds parachute to bus while doors closed </li></ul><ul><li>Total Measured Mass: 470g </li></ul>Mechanical Design Overview
  6. 6. Structural Drawings
  7. 7. Electrical System Diagram Processor Pressure Sensor Transceiver Buzzer Servo Transceiver Computer
  8. 8. Electrical Design Overview <ul><li>Sensors: </li></ul><ul><li>SCP1000 Barometric pressure and temp. sensor </li></ul><ul><li>Microprocessor: </li></ul><ul><li>Atmel ATMega168 </li></ul><ul><li>Transmitter: </li></ul><ul><li>Aerocomm AC4790-1000M </li></ul><ul><li>Battery </li></ul><ul><li>11.1V 800 mAh Li-Poly </li></ul><ul><li>12.26V Initial, 12.19V After Mission: 0.7V Drop </li></ul>
  9. 9. <ul><li>Ground Station Computer: </li></ul><ul><li>HP Pavilion N5425 </li></ul><ul><li>Ground Station Receiver: </li></ul><ul><li>Aerocomm ConnexLink 4790 </li></ul><ul><li>Ground Station Antenna: </li></ul><ul><li>External high gain omni-directional antenna </li></ul>Ground Station
  10. 10. Raw Data Plots
  11. 11. Processed Data Note: Matlab truncation of LS digit = loss in accuracy 0 20 40 60 80 100 120 140 160 180 200 8.4 8.6 8.8 9 9.2 x 10 4 Mission Time (s) Pressure (Pa) 0 20 40 60 80 100 120 140 160 180 200 -200 0 200 400 600 800 Mission Time (s) Altitude (m)
  12. 12. Processed Data (cont.) (Processed with Matlab’s ‘Diff’ and ‘Filter’ functions and window size of 10) From VTI Tech: “Assumed constant temp. gradient of dT/dH from 1976 US Standard Atmosphere” H = 30°C/(6.5°C/km)*(1-(P/101325Pa)^0.19 Reference: VTI Technologies
  13. 13. Flight Operations <ul><li>Altitude Transmission: Success </li></ul><ul><li>Average Descent Rate: 3.3767 m/s </li></ul><ul><li>Descent Time: (1340s-1160s)/60 ~3 min </li></ul>
  14. 14. Flight Operations (cont.) <ul><li>Recovery: Success </li></ul><ul><li>Up-righting System: Success </li></ul><ul><li>Ground Temperature (bonus): Not Met </li></ul>From: 34.48.097N 101.35.244W To: 34.47.88N 101.35.562W ~1.28km Lateral Distance Traveled Reference: http://www.movable-type.co.uk/scripts/latlong.html
  15. 15. <ul><li>Pattern Loss ~30% </li></ul><ul><li>Ground Absorption </li></ul><ul><li>Terrain </li></ul><ul><li>Ground Station Antenna height </li></ul>a) Elev. Pattern b) Azimuth Pattern Reference: Aerocomm Corp. Failure Analysis
  16. 16. <ul><li>Satellite activated </li></ul><ul><li>Satellite loaded into rocket </li></ul><ul><li>Satellite takes initial pressure reading </li></ul><ul><li>Rocket launches </li></ul><ul><li>Satellite detects pressure change, starts sending </li></ul><ul><li>pressure/altitude data </li></ul><ul><li>Satellite ejects from rocket </li></ul><ul><li>Parachute deploys, slowing descent </li></ul><ul><li>Satellite descends at less than 4.6 m/s </li></ul><ul><li>Satellite continues to transmit data </li></ul><ul><li>Satellite lands </li></ul><ul><li>Doors open up-righting satellite </li></ul><ul><li>Parachute released </li></ul><ul><li>Buzzer activates </li></ul><ul><li>Ground temperature reading and transmission </li></ul><ul><li>Data transmission stops </li></ul>Preparation Launch Deployment Descent Recovery CONOPS Comparison
  17. 17. <ul><ul><li>UNH ECE Dept. </li></ul></ul><ul><ul><li>UNH ME Dept. </li></ul></ul>WildCatSat Sponsors <ul><li>Jon Arlington at </li></ul><ul><ul><li>Orbital Sciences Corp. </li></ul></ul><ul><li>The Byrd Family </li></ul>Todd Gross Professor and Chair May-Win Thein Associate Professor
  18. 18. Questions? Professor May-Win Thein Project Advisor Ph.D Mechanical Engineering [email_address] Robert Terry Team Leader Electrical Engineer [email_address]

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