1. Student Launch Project Critical Design Review February 28, 2014

2. Team Structure

3. Final Launch Vehicle Dimensions

4. Final Motor Choice (18,500 ft) MotorBrand Engine CodeDiameterLengthBurn TimeImpulseThrust BoostersCesaroniJ240 RL54 mm9.2913 in3.35 s 808.959 Ns241.624 N MainCesaroniL61098mm16.8110 in8.13s 4842.188 Ns595.595 N SustainerCesaroni L3150 Vmax98mm15.5118 in1.57 s 4806.279 Ns 3063.279 N

5. Final Motor Choice (9000 ft) MotorBrand Engine CodeDiameterLengthBurn TimeImpulseThrust BoostersAerotech I229T 54 mm6.1417 in1.73 s 413.681 Ns239.122 N MainAerotechL339N98mm12.1654 in8.43 in 2800.459 Ns332.359 N SustainerAerotechK1999N98mm11.3780 in1.40 s 2520.394 Ns 1800.281 N

6. Static Stability Margin Stability Analysis From nose coneWith Booster SectionWithout Booster Section Center of Pressure90.7870’”63.1160” Center of Gravity79.6498”54.2552” Static Stability Margin1.801.43 Rail Size/Length1.5” (1515) / 144”

7. Thrust-to-Weight Ratio and Rail Exit Ascent Analysis With Booster SectionWithout Booster Section Rail exit velocity (ft/s)63.23- Max velocity (ft/s)6201283 Max Mach number0.551.14 Max acceleration (ft/s 2 )211685 Peak altitude (ft)715018500 Thrust-to-Weight Ratio5:119:1

8. Mass Statement and Mass Margin SubsystemMass (oz)Mass Limit (oz) Propulsion (Including: motor mounts and centering rings) 469586.25 Structure (Including: body tube, coupling tubes, bulkheads, nose cones, fin sets) 232.53290.66 Recovery (Including: main parachute, drogue parachute, detachable components parachutes) 83.23104.04 Payload (Including: avionics bays, electrical components) 202.47253.09 Miscellaneous (Including: Paint scheme, dressings/coatings) 1620 Total10031254.04

9. Mass Statement and Mass Margin

10. Recovery Systems ParameterDrogueMainParallelBooster Diameter85’’120’’20”60” Deployment Altitude18500’1200’4445’7150’ Velocity at Deployment (f/s) 0.872817.038119 Descent Rate (ft/s)17.0314.89518.4320.15 Kinetic Energy (ft- lbs) 46.9350.553.5645.94 Recovery Harness Material 1” Tubular Nylon Harness Length (ft)20’30’6’10’

11. Predicted Drift from Launch Pad 0 mph5 mph10 mph15 mph20 mph 0 ft.622.88 ft.1280.92 ft.2046.53 ft.2663.46 ft. 18,00 ft. Flight 0 mph5 mph10 mph15 mph20 mph 0 ft.847.97 ft.1424.93 ft.1666.09 ft.1301.99 ft. 9,000 ft. Flight

12. Test Plans and Procedures  Recovery System Tests  Ensure safe operation of recovery system  Parachute tests, static ejection tests, bulkhead tests  Airframe Materials Tests  Verify that airframe components can withstand expected loads  Tests to failure, including tensile and compressive tests  Wind Tunnel Tests  Tests to find drag coefficient for increased accuracy of simulations  Nylon Bolts  Tests to determine the correct amount of black powder to be placed in Nylon Exploding Bolts  Electrical Components  Tests to ensure minimum amount of error.

13. Scale Model Flight Test

15. Final Payload Design Overview and Integration

19. Interfaces Internal USB Connections Raspberry Pi, Power Supply Arduino, GPS, Camera, Digital Connections Pressure\Temp. Sensor Analog Connections All Other Atmospheric Sensors Serial Connections Raspberry Pi ↔ Arduino, GPS Xbee External Radio Frequency RoamEO GPS Tracker (154.60 MHz), Xbee (902-928 MHz) Physical Connections 8 ft. 1515 Launch Rail 12V Igniter Connection

20. Status of Requirements Verification RequirementStatus Rocket must not fly higher than 20,000 ft. AGLComplete Rocket must carry a scientific payloadComplete Rocket must have dual altimetersComplete Rocket must have dual deploy recovery systemComplete Rocket must be reusable on the day of recoveryComplete Rocket must land within 5000 ft. of the launch pad assuming 20 mph windComplete Students must do all critical design and fabricationComplete Team must use a launch and safety checklistComplete Rocket must use a commercially available, certified motorComplete Rocket must be capable of being prepped for launch in less than 2 hComplete Rocket must be able to remain in a launch-ready configuration for at least 1 hComplete Rocket must attain an altitude between 17,000-18,000 ft.Complete Drogue parachute successfully deploys at apogee and main at 1200 ft.Complete Rocket must be compatible with a 1.5’’ launch railComplete

21. Questions?