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1 STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION FRR PRESENTATION \ Student Launch Initiative AIAA OC Section.

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Presentation on theme: "1 STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION FRR PRESENTATION \ Student Launch Initiative AIAA OC Section."— Presentation transcript:

1 1 STUDENT LAUNCH INITIATIVE 2010 – 2011 AIAA OC SECTION FRR PRESENTATION \ Student Launch Initiative AIAA OC Section

2 Agenda  Finalized Vehicle  Motor type and selection  Rocket flight stability  Parachute and descent rates  Test plans and procedures Black Powder testBlack Powder test Dual DeploymentDual Deployment Full scale lunchFull scale lunch  Lessons learned – Vehicle  Payload  Payload integration  Lessons learned – Payload  Educational Outreach  Questions 2 Student Launch Initiative AIAA OC Section

3 Finalized Vehicle – Black Brant Full Scale Model Diameter4 inches Length84.5 Inches Liftoff Weight17.75 pounds Descent Weight13.85 pounds Center of Pressure inches Center of Gravity inches Launch Rail Diameter1 inch Launch Rail Length6 feet Motor Retention MethodAero pack Qwik Change Motor Retainer Thrust to weight ratio8.28:1 3 Student Launch Initiative AIAA OC Section

4 Finalized Vehicle – Black Brant 4 Student Launch Initiative AIAA OC Section Full Scale Model Size of Shock Cord5/8 th inch Length of Shock Cord15 feet in each section Material of Shock CordTubular Nylon Drogue ‘Chute24 inches Main ‘Chute72 inches Black Powder for Drogue1.74 grams Black Powder for Main2.00 grams

5 Cesaroni K635 Redline 5 Student Launch Initiative AIAA OC Section Pro K A Motor Data BrandnamePro K635-17AManufacturer Cesaroni Technology Man. Designation1994K635-17A CAR Designation 1994-K635-17A Test Date7/6/2003 Single-Use/Reload/HybridReloadable Motor Dimensions mm x mm (2.13 x in) Loaded Weight g (69.65 oz)Total Impulse Ns ( lb.s) Propellant Weight g (44.84 oz) Maximum Thrust N ( lb) Burnout Weight g (23.04 oz)Avg Thrust N ( lb) Delays Tested secsISP s Samples per second1000Burntime2.66 s NotesRed Lightning™

6 Motor Selection 6 Student Launch Initiative AIAA OC Section Motor Properties ManufacturerCesaroni Motor TypeK635 Redline Max, Average Thrust (Newtons) 656 Total Impulse (Newton – Seconds) Mass of Motor Before and After Burn (Pounds) 4.38/1.45

7 Cesaroni K490 (alternate) 7 Student Launch Initiative AIAA OC Section

8 Alternate Motor Selection 8 Student Launch Initiative AIAA OC Section Motor Properties ManufacturerCesaroni Motor TypeK490 Max, Average Thrust (Newtons) Total Impulse (Newton – Seconds) Mass of Motor Before and After Burn (Pounds) /

9 Parachute Size and Descent Rates  Rocket mass = oz  Drogue chute diameter = 24 in.  Main chute diameter = 72 in.  Calculated projected velocity for each chute with online calculator and by hand  v 2 = 2F D / (ρ)(C D )(A) C D = 1.00C D = 1.00 F D = mg = (6.285 kg)(9.8 m/s 2 )F D = mg = (6.285 kg)(9.8 m/s 2 )  Hand: v drogue = ft/s Online: v drogue = ft/s  Hand: v main = ft/s Online: v main = ft/s 9 Student Launch Initiative AIAA OC Section

10 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 PowderAppendix H; Black Powder Appendix I; Battery LifeAppendix I; Battery Life Appendix J; GPS TestingAppendix J; GPS Testing And so onAnd so on  Videos and pictures of these tests are on our website: 10 Student Launch Initiative AIAA OC Section

11 Black Powder Charge Test   The table below shows the testing our team has done with black powder charges 11 Student Launch Initiative AIAA OC Section Full ScaleAmountSuccessful? Sustainer with out parachute 1.74Yes Sustainer with parachute 1.74Yes Main without Parachute 1.43Yes Main with parachute1.43No Main with parachute1.74No Main with parachute2.00Yes

12 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. 12 Student Launch Initiative AIAA OC Section

13 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 testChristmas tree light test Vacuum Chamber testVacuum Chamber test First flight in the scale rocket (MAWD Only)First flight in the scale rocket (MAWD Only) Second Flight in scale model (MAWD Only)Second Flight in scale model (MAWD Only) 13 Student Launch Initiative AIAA OC Section

14 Dual Deployment Tests   Christmas Tree Light:   Vacuum Chamber:   First Launch 14 Student Launch Initiative AIAA OC Section

15 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.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.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 15 Student Launch Initiative AIAA OC Section

16 Full Scale Launch Second Launch Video 16 Student Launch Initiative AIAA OC Section

17 Lessons Learned - Vehicle 17 Student Launch Initiative AIAA OC Section Scale model faultHow we applied itWas it successful Complex wiringOur team made the wiring less complicated and added slack to the wires so there was extra room for easier assembly Yes it was successful but we learned we have to be careful so we don’t stress the key switches Instability when reaching apogee Our team took their time to assemble the rocket. The rocket was looked over before it was launched and the checklist was followed. Yes it was successful because our design proved stable in 15mph wind. Drag/impulse SeparationOur team used three #2 sheer pins on both the bottom section and the top section of our rocket. Yes this was successful because our rocket did not have drag/impulse separation.

18 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 18 Student Launch Initiative AIAA OC Section

19 Lessons Learned - Payload FaultHow are we going to fix it Will it be successful File system is corrupt on the hard drive, but the hard drive is ok We worked around the file system the raw sector on the disk Yes because there no file system code to work through, there is no risk of “erroring out” due to a corrupt file system, we will have more control over the “seeking” of the drive, and this will speed things up. AccuracyWe are going to fix this by flushing the caches. Yes because in Linux, there is a 'sync' command, which does this 19 Student Launch Initiative AIAA OC Section

20 Website  aiaaocrockectry.org  SLI DocumentsDocuments CalenderCalender Photos/VideosPhotos/Videos ManualsManuals MSDSMSDS 20 Student Launch Initiative AIAA OC Section

21 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 9 th to April 11 th, we will reach a few hundred kids. 21 Student Launch Initiative AIAA OC Section

22 Thank you for letting us be part of SLI Questions? 22 Student Launch Initiative AIAA OC Section


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