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Critical design review

Critical design review. Windward Community College Team Hawaii. Flight Profile. Rocket details. Length: 127.13 ” Diameter: 6” Unloaded Weight: 643 oz. Weight: 804 oz. Materials: G10 Fiberglass Recovery: Dual Deployment, E lectronic Propulsion: AEROTECH L1500T.

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Critical design review

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  1. Critical design review Windward Community College Team Hawaii

  2. FlightProfile

  3. Rocket details • Length: 127.13” • Diameter: 6” • Unloaded Weight: 643 oz. • Weight: 804 oz. • Materials: G10 Fiberglass • Recovery: Dual Deployment, Electronic • Propulsion: AEROTECH L1500T

  4. Motor justification • Drag force is linear to ~30 degrees • Approximate altitude loss ~1.2%/degree • 30 degree deployment yields ~36% loss • Must yield max altitude below 7180 ft and above 5280 ft

  5. Leo Hano Rocket USLI 2011-2012 Nose Cone (Scale 1:4; all inches) 2

  6. Leo Hano Rocket USLI 2011-2012 Booster (Scale 1:6; all inches) Drogue Chute Storage

  7. Leo Hano Rocket USLI 2011-2012 Drag Assembly Detail (Scale 1:1; all inches)

  8. Characteristics • GPSFlight in nose cone • Variable Drag Configuration (VDC) • Four-fin design Avionics Featherweight Raven-2 PerfectFlight MAWD Dual deployment • Center of Pressure: 90.25” • Center of Gravity: 75.23”

  9. Parachutes Size Decent Rate ~17 ft/s ~70 ft/s ~22 ft/s ~22 ft/s • Main: 144in • Drogue: 42 in • Nose Cone: 60in • Payload: 36in

  10. Kinetic Energy Initial decent: 3898.8ft-lbs First Section: 139.2ft-lbs Booster, Avionics, Payload Second Section: 67.8ft-lbs Nosecone Third Section: 24.2ft-lbs SMD Payload

  11. Walter Now Planned Three perpendicular coils around a non-magnetic sphere 12-bit ADC 3 Operation Amp Micro SD storage ArduinoMicro-Controller 3-axis accelerometer (comparison) • Three perpendicular coils around a non-magnetic sphere • 12-bit ADC • EEPROM • BS2p Micro-Controller • 3-axis accelerometer (comparison)

  12. ASTrid • Arduino Nano • Xbee-Pro • BMP085 – Temperature, Pressure, Altitude • DHT11 – Humidity • TSL2561 – Light Sensor x2 • BPW34 – Photodiode • TTL Serial JPEG – Camera • Micro SD storage

  13. Wind Challenge

  14. TimeLine

  15. Important dates • Deployment test: 2/11/12 • Transmission Test: 3/4/12 • Full-Scale Low-Power test: 3/11/12

  16. Education outreach

  17. Mahalo Questions?

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