FLIGHT READINESS REVIEW TEAM HAWAII

LEO HANO FULL SCALE LOW POWER March 13, 2011 Motor = K780R

LEO HANO FULL SCALE LOW POWER March 20, 2011 Motor = K1000T

OVERVIEW

Drogue 42in ft/sec Main 144in ft/sec PARACHUTES

Main Charge Primary: 5.5 g Back up: 5.5 g Drogue Charge Primary: 4 g Back up: 4 g DUAL DEPLOYMENT AVIONICS TEST

65.2 ft/sec Reach safe speed at inches RAIL EXIT VELOCITY

Rocket was stable throughout flight Drogue was deployed at apogee Main event No main deployment Unsuccessful Possible causes: E-matches pulled through Improper packing of the main chute Insufficient time to deploy main chute FSLP FIRST ATTEMPT 3/13/11

FSLP SECOND ATTEMPT 3/20/11 Rocket stable throughout flight even with the wind gusting between 12-19mph Deployed drogue at apogee 12.5 sec after lift off Main deployed shortly after Drifted out to sea Water recovery Damaged avionics Loss of data

PAYLOAD – HULA-HOOP 2 - BLOCK DIAGRAM

HULA-HOOP2 SUBSYSTEMS Controller  Main serial interface  Debug port serial interface  LEDs and switch Data storage Sensors & Analog to Digital Convertors (ADC)  Temperature  Acceleration  Magnetic field  12 bit ADC Power

CONTROLLER Parallax Basic Stamp 2p features:  24 pin DIP  8 code and/or data segments at 2 Kbytes per segment  16 digital Input/Output interfaces  Debug and program upload interface  Voltage regulator at +5 Volts DATA STORAGE Micro Technology 24LC512 EEPROM features:  8 pin DIP  capacity of 65,536 bytes or 64 Kbytes per chip  I 2 C interface Memory sizes  Model A: 4 chips for 256 Kbytes  Model B: 2 chips for 128 Kbytes

SENSORS TEMPERATURE: National Semiconductor LM34 features:  3 pin TO-92 case  Analog Output Connected to ADC#2 ACCELERATION: Parallax’s Freescale MMA7455 Accelerometer features:  wider than usual 8 pin DIP  SPI or I 2 C interface – using SPI  3 axis acceleration  choices of 2g, 4g or 8 g – using 8g  8 bit or 10 bit resolution – using 8 bit  Digital Output Data stream  8 bits in  8 bits out

SENSORS: MAGNETIC FIELD Custom built inductors Analog Output 3 coils will be used, one for each axis (X, Y and Z) Each coil will have its own 4 resistor network that will be connected to ADC#1

ANALOG TO DIGITAL CONVERTORS: 12 BIT ADC #1 Micro Technology MCP3208 features  16 pin DIP  12 bit resolution  8 single ended input channels  SPI interface  Adjustable voltage reference (.25 to 5 volts) while keeping the device’s power supply at 5 volts. Will be set at 1 volt Data stream  6 bits in  12 bits out ANALOG TO DIGITAL CONVERTORS: 12 BIT ADC #2 Micro Technology MCP3202 features  8 pin DIP  12 bit resolution  2 single ended input channels  SPI interface Data stream  4 bits in  12 bits out

MAHALO QUESTIONS?