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Student Launch Initiative AIAA OC Section. STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION FRR PRESENTATION \. Student Launch Initiative AIAA OC Section. Agenda. Finalized Vehicle Motor type and selection Rocket flight stability Parachute and descent rates Test plans and procedures

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agenda
Student Launch Initiative

AIAA OC Section

Agenda
  • Finalized Vehicle
  • Motor type and selection
  • Rocket flight stability
  • Parachute and descent rates
  • Test plans and procedures
    • Black Powder test
    • Dual Deployment
    • Full scale lunch
  • Lessons learned – Vehicle
  • Payload
  • Payload integration
  • Lessons learned – Payload
  • Educational Outreach
  • Questions
parachute size and descent rates
Student Launch Initiative

AIAA OC Section

Parachute Size and Descent Rates
  • Rocket mass = 221.65 oz
  • Drogue chute diameter = 24 in.
  • Main chute diameter = 72 in.
  • Calculated projected velocity for each chute with online calculator and by hand
  • v2 = 2FD / (ρ)(CD)(A)
    • CD = 1.00
    • FD = mg = (6.285 kg)(9.8 m/s2)
  • Hand: vdrogue= 60.99 ft/s Online: vdrogue = 68.57 ft/s
  • Hand: vmain= 17.43 ft/s Online: vmain= 19.59 ft/s
test plans and procedures
Student Launch Initiative

AIAA OC Section

Test Plans and Procedures
  • We will further test our electronics .
  • All of the tests that are done are to ensure that our vehicle subsections are safe.
  • In our FRR we have Appendices which explain the procedure of each test that it completed.
  • Some appendices are:
    • Appendix H; Black Powder
    • Appendix I; Battery Life
    • Appendix J; GPS Testing
    • And so on
  • Videos and pictures of these tests are on our website: http://aiaaocrocketry.org/?page_id=13
black powder charge test
Student Launch Initiative

AIAA OC Section

Black Powder Charge Test

The table below shows the testing our team has done with black powder charges

black powder charge test1
Student Launch Initiative

AIAA OC Section

Black Powder Charge Test

We learned that we needed to refold the parachute to have it deploy. Also we moved the ejection charge for the top section to the front of the rocket. It will now lay against the bulkhead that the first attachment point is.

dual deployment
Student Launch Initiative

AIAA OC Section

Dual Deployment
  • Electronics: MAWD Perfect Flight, HCX G-Wiz Partners
  • The electronics will “back” one another up incase one pyro (either drogue or main) does not fire.
  • Drogue Parachute will be deployed at apogee
  • Main Parachute will be deployed at 900ft
  • The electronics have been tested four tests have been done:
    • Christmas tree light test
    • Vacuum Chamber test
    • First flight in the scale rocket (MAWD Only)
    • Second Flight in scale model (MAWD Only)
dual deployment tests
Student Launch Initiative

AIAA OC Section

Dual Deployment Tests

Christmas Tree Light:

Vacuum Chamber:

First Launch

dual deployment flight test
Student Launch Initiative

AIAA OC Section

Dual Deployment – Flight Test
  • Fist Flight
        • Our dual Deployment was partially successful. Both of our ejection charges went off, but only our drogue shoot deployed.
        • We learned that the gases from the ejection charge won’t necessarily eject the parachute. So, we will wrap the shock cord around the parachute to ensure a successful deployment of the main parachute.
  • Second Flight
full scale launch
Student Launch Initiative

AIAA OC Section

Full Scale Launch

Second Launch Video

payload
Student Launch Initiative

AIAA OC Section

Payload

G-Wiz Partners HCX flight computer - measures acceleration of the rocket

Toshiba hard drive – test subject; we will run a Linux script on the hard drive over and over again; the time the hard drive takes to run the script each time is measured

Simple net computer/Linux computer – the mini computer that will execute the Linux script on the hard drive; it will be initialized by a PC; the flight data will be recorded on a flash drive inserted into this computer

Power converter – Keeps a steady flow of power to the payload components

website
Student Launch Initiative

AIAA OC Section

Website
  • aiaaocrockectry.org
  • SLI 2010-2011
    • Documents
    • Calender
    • Photos/Videos
    • Manuals
    • MSDS
educational outreach
Student Launch Initiative

AIAA OC Section

Educational Outreach

Cloverdale 4-H club

Girl Scouts workshop

Presentations to Sunny Hills High School Science classes to get involved

Articles published/ will be published in the Orange County Register, The Foothill Sentry, and the Sunny Hills High School Accolade

We will have a booth at youth expo, April 9th to April 11th, we will reach a few hundred kids.

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