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STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION PDR PRESENTATION December 14, 2010

Student Launch Initiative AIAA OC Section. STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION PDR PRESENTATION December 14, 2010. Student Launch Initiative AIAA OC Section. Agenda. Introduction of team members (representing 5 high schools in Orange County California) Mission statement

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STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION PDR PRESENTATION December 14, 2010

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  1. Student Launch Initiative AIAA OC Section STUDENT LAUNCH INITIATIVE2010 – 2011AIAA OC SECTIONPDR PRESENTATIONDecember 14, 2010

  2. Student Launch Initiative AIAA OC Section Agenda • Introduction of team members (representing 5 high schools in Orange County California) • Mission statement • Vehicle • Design • GPS Transmitter • Dual Deployment Recovery System • Propulsion • Scientific payload

  3. Changes since original posting on 11/19/2010 Student Launch Initiative AIAA OC Section • Modified slide #9: miles to mph • Modified slide #11: fixed mistake, main to drogue • Modified slide #15: emphasized separate recovery & payload, fixed spelling • Modified slide #19: fixed spelling, added photos • Added slide # 3 covering Changes since the first version • Added slide #18 covering Testing • Added slide #20 covering the WebSite • Added slide #24 covering Mile Stones 3

  4. Student Launch Initiative AIAA OC Section Mission Statement We, the M1 team from the AIAA Orange County Section, will construct and launch a rocket that will reach a mile high while testing hard drive latency without exceeding mach. The rocket will include a dual deployment recovery and will remain reusable.

  5. Student Launch Initiative AIAA OC Section Vehicle – Black Brant • Length 80 inches • Diameter 4 inches • Material: G-10 Fiberglass (body tubes, couplers, fins) • Liftoff Weight: 18.7 pounds • Descent Weight: 15.7 pounds • Recovery: Dual Redundant Electronics • Center of Gravity: 49.85 inches behind the nose tip • Center of Pressure: 58.97 inches behind the nose tip • Stability Margin: 2.29

  6. Student Launch Initiative AIAA OC Section Propulsion • Target altitude is 5,280 feet • Vehicle must remain subsonic from launch until landing • Motor must lift almost 19 pounds of vehicle and payload with GPS • Once design was completed launches were simulated using Rocksim • Motor selected is Cesaroni K635 Redline • This selection gives margin if larger or smaller motor is required

  7. Student Launch Initiative AIAA OC Section Cesaroni K635 Redline

  8. Student Launch Initiative AIAA OC Section GPS TRACKING • Ground Station • Receiver: Yaesu VX-6R • TNC: Byonics Tiny Track 4 • GPS: Garmin eTrex Legend • Transmitter in Vehicle • Big Red Bee Beeline GPS • RF: 17mW on 433.920 MHz • Battery and life: 750mAh 10 Hrs • Size: 1.25” x 3” 2 ounces • Beeline receives GPS position • Encodes as AX.25 packet data • Sends as 1200 baud audio on 433.92 MHz • VX-6R receives at 433.92 MHz and extracts audio • TinyTrack 4 converts audio to digital NMEA location data • Garmin displays the digital location data on human screen

  9. Student Launch Initiative AIAA OC Section Dual Deployment Recovery • Used to bring down vehicle quickly and minimize drift • Smaller drogue parachute deploys at apogee • Larger main parachute deploys closer to ground at 900 ft • 24 inch drogue: descent rate 79.65 ft/s with 19 pound vehicle • 96 inch main: descent rate 19.9 ft/s with 16 pound vehicle • Maximum downrange distance is 2500 ft at 10 MPH • Wind speed margin is 7 mph (within 2500 ft to 17MPH)

  10. Student Launch Initiative AIAA OC Section Dual Deployment Electronics • Flight Computer #1 • G-Wiz Partners HCX 56G • 1.10” x 5.50” 45 grams • Accelerometer based altitude • Pyro output at Apogee • Pyro output at 900 ft altitude • 9VDC at 65ma for 3 hour battery life • Separate CPU and Pyro batteries • Safety interlock switch on body tube • Flight Computer #2 • Perfectflite MAWD • 0.90” x 3.00” 20 grams • Barometric pressure based altitude • Pyro output at Apogee • Pyro output at 900 ft altitude • 9VDC at 8ma for 28 hour battery life • One battery for both CPU and Pyro • Safety interlock switch on body tube

  11. Student Launch Initiative AIAA OC Section Dual Deployment Ejection Charge • Ejection charge is measured amount of black powder • Black powder sealed in cut-off finger of glove • Glove finger contains black powder and electric match • Electronics fire electric match via pyro outputs • Three shear pins require 35lbs/pin or 105 pounds of force • 4” bulkhead has 12.56 square inches of surface area • Need a minimum of 8.4 psi – we chose 11psi to give safety margin • Main ‘chute uses 1.27 grams of black powder (on-line calculator) • Body tube with the main is 4” diameter x 18” long • Drogue ‘chute uses 0.99 grams of black powder (on-line calculator) • Body tube with the drogue is 4” diameter x 14” long

  12. Student Launch Initiative AIAA OC Section Launch Simulations • Simulations were run using Rocksim • Over 100 simulations were run to fine tune vehicle • Dimensions, proportions around avionics bay, weights were varied • Target was a margin of stability between 2 and 2.5 • Once vehicle was designed varied engines to attain 1 mile altitude • Verified top speed was still subsonic • Verified range at 10MPH wind • Determined wind margin (OK to 17MPH)

  13. Student Launch Initiative AIAA OC Section Scientific Payload • Hypothesis is that high “G” forces and vibration will dramatically increase the latency time of a hard disk drive • Equipment • Small Linux computer to exercise drive • 2.5” Toshiba hard disk drive (specs allow 200g forces for short time periods • G-Wiz partners HCX flight computer to measure the acceleration • LiIon Batteries and DC-DC converter • Method • Linux script gets a file from the hard drive • The script measures the time that takes • Record the time to the thumb drive • Repeat as fast as possible (approx 100ms) • Control: Run test while stationary and record • Experiment: Run same test at launch

  14. Student Launch Initiative AIAA OC Section Payload/Vehicle Integration • Vehicle has a single avionics bay • Everything is located in a single 4” diameter x12” long coupler • Two electronics sleds are separated by two square, milled pieces of aluminum • One sled holds all recovery electronics together with batteries for recovery and scientific payload • Second sled holds the scientific payload • Payload and recovery electronics and power are completely separate

  15. Student Launch Initiative AIAA OC Section Risks

  16. Student Launch Initiative AIAA OC Section Risks Mitigation

  17. Student Launch Initiative AIAA OC Section Safety • Follow NAR and TRA safety rules for launch • Safe material usage restrictions • Safe distance from launch pad • Safe recovery area • Inspection by range safety officer before flight • Follow our check list when preparing for launch • Have fire extinguisher and first aid kit on site • Follow our own (AIAA OC Section Rocketry) safety rules for shop as well as launch (attached to the proposal and the PDR • MSDS referred to as needed and can be found on our web site • Manuals are posted on the web site since they contain set-up information for recovery electronics • Presentation given to all team members with their signature that they attended and understand

  18. Student Launch Initiative AIAA OC Section Testing • Learn how to configure the flight computers and test on the “bench” • Set up the flight computers and test with Light Emitting Diodes (LEDs)instead of electric matches • Test the ejection charges • Set up 4” diameter body tubes with volume same as the design and set off the ejection charges - parachutes should eject without damage to the rocket body • Repeat test using the flight computers in simulated flight • Test the battery life • Run recovery and payload electronics and validate the batteries will last a minimum of three hours • Test the GPS • Verify we can receive and decode the signal from the GPS transmitter at distance, and at ground level and 6 feet above ground level • Test functionality of electronic payload • Set up the payload and validate it will run on the “bench” – with vibration from tapping (completed) • Swing the entire payload overhead in a centrifuge-like manner to simkulate “G”s the avionics section would experience during launch – validate data is collected similar to the calculated forces • Test the rocket itself • Build a scale model and fly to test the overall design • Build a full scale model and fly to test the overall design

  19. Student Launch Initiative AIAA OC Section Educational Outreach • Girl scout workshop and launch outing in October/November 2010 • Giving presentation to AIAA professional society council meeting with all AIAA members in Orange County invited in January 2011 • Newspaper articles • Article in Sunny Hills High School (Fullerton, CA) school paper • Feature article being researched/written for Orange County Register • Local paper in Orange, CA – The Foothills Sentry – will carry article • Presentations at Orange County 4H clubs • Contacted Discovery Science Center for youth booth – they are featuring space exploration

  20. Student Launch Initiative AIAA OC Section Website • http://aiaaocrocketry.org/ • Contains links to all manuals,MSDS, and design reviews • Includes a calendar for importantupcoming evens as well asprevious meeting dates • Includes photos taken during • SLI Team meetings • Girl Scout Events • ROCtober Fest • Used as a tool for kids to get information about our SLI team

  21. Student Launch Initiative AIAA OC Section Budget - Expenditures Budget summary – full details in PDR

  22. Student Launch Initiative AIAA OC Section Budget - Income • NASA Grant for SLI teams • Fundraising letters to Southern California Aerospace • Boeing • Raytheon • Northrop Grumman • Lockheed Martin • AIAA Orange County Section • Garage sales • Car Wash

  23. Student Launch Initiative AIAA OC Section Timeline

  24. Milestone Summary Student Launch Initiative AIAA OC Section October 12, 2010: Proposal November 6, 2010: Girl Scout Launch November 19, 2010: PDR submitted December 18, 2010: Start building Scale Model January 8, 2011: Launch Scale Model January 11, 2011: Presentation to AIAA OC Section January 19-31, 2011: Finalize Full Scale Design January 24, 2011: CDR due February 9-28, 2011: Build Full Scale Rocket March 12, 2011: Launch Full Scale Rocket March 21, 2011: FRR Due March 28-31, 2011: Web-Ex FRR Presentations April 13: Travel to Huntsville April 15: Launch Day 24

  25. Student Launch Initiative AIAA OC Section Challenges • Inconsistency of data • Impulse values are different between Rocksim, Thrustcurve.org and Cesaroni for the same engine • Calculations (formula) vary between tools • On-line calculators give different values than Rocksim • Different versions of Rocksim give different values • Different wind speeds at different levels

  26. Student Launch Initiative AIAA OC Section THANK YOUfor letting us bea part of SLI

  27. Student Launch Initiative AIAA OC Section QUESTIONS&COMMENTS

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