Cansat 2008: University of Alabama in Huntsville Final Presentation

Optimus Prime ~University of Alabama in Huntsville~ Flight Review AIAA Cansat Competition 2008 June 15, 2008

Team Roster UAH Space Hardware Club Students Faculty & Advisors Seiya Shimizu MAE Project Manager Dr. Georgia Richardson Faculty Advisor James Mulroy MAE Alternate Project Manager Dr. Gerald Karr Faculty Advisor Ande Boyer ECE EE Lead, Software design Dr. John Gregory Advisor , ASGC Paul Watts MAE ME Lead, Landing gear Mr. Jason Winningham EE Advisor Eric Becnel MAE Drag & Landing device Mr. Bob Hawkins ME Advisor Fuhito Fukazawa MAE Power, Communication Dr. Ivan Galysh Official Mentor Randy Gaillard OPE Circuit design MAE = Mechanical & Aerospace Eng. ECE = Electrical & Computer Engineering OPE = Optical Engineering BUS = Business Administration PHY = Physics ASGC = Alabama Space Grant Consortium Drew Moynihan MAE Structure, Communication Andrew Spain BUS Drag device Eric Zirnstein PHY Sensor selection

Construct & deliver a flight model

Perfect minimum requirements

Complete one bonus

Measure ground surface temperature (30pt)

Complete other bonuses

Take a 360 deg. panoramic image (40)

Measure wind speed & direction @ surface (30)

Measure temp. 25mm below the surface (40)

Collect soil sample (50)

Land autonomously to the given coordinate (50)

Mission Priority & Success Level UAH Space Hardware Club Minimum Intermediate Full Advanced

Design overview UAH Space Hardware Club Legs Temperature sensor Servo Spring Parachute string Avionics board Batteries Corrugated plastic wall

Mechanical Drawings UAH Space Hardware Club Leg Deployment Mechanism (Movie) Carbon rod leg

Mass Budget UAH Space Hardware Club UAH Space Hardware Club Cordura Parachute & String 17 g = 0.6 oz Frame (including landing gear) 155 g = 5.5 oz Electronics 30 g = 1.1 oz Battery 50 g = 1.8 oz 4 Items Total 252 grams = 8.9 oz

Electrical Block Diagram UAH Space Hardware Club  Controller Unit Servo Pressure Sensor Temperature Sensors Accelerometer ADC Transmitter 5V Regulator Battery EEPROM I 2 C Analog output SPI

Flow Chart UAH Space Hardware Club Past 3 Accel’s > 5G ? Measure acceleration No Measure acceleration Yes Past 3 Accel’s ≅ 0G ? > 7min after apogee? Measure altitude & temperature Write & transmit data Release parachute Measure acceleration Write & transmit data Measure altitude & temperature Write data Measure surface temperature Deploy legs No Yes No Yes No Yes Past 3 Accel’s < 5G ? Stand-by phase Launch phase Flight phase Exploration phase

Ground system block diagram

Battery

TM-D700 Yagi Antenna TH-D7A(G) Handheld Antenna The Main Station The Back-up Station Computer with data-receiving software (TeraTerm Pro) Back-up computer with TeraTerm Pro

Pressure UAH Space Hardware Club

Altitude UAH Space Hardware Club H=(P C -P G )*-89.92 Retrieved from vacuum chamber test

Descent Rate Analysis - Entire Flight UAH Space Hardware Club

Descent Rate Analysis - from Apogee to Landing UAH Space Hardware Club Average: 7.03 m/s

Ground Temperature Measurement UAH Space Hardware Club 48.56 °C

Acceleration UAH Space Hardware Club

Outcome of Operations

Pressure (Altitude)

Acceleration

Ground Temperature

Data Transmission

Control Software

Stood upright

Parachute Release

UAH Space Hardware Club

Failure Analysis

Fast Descent Rate

Cause:

Twisted Parachute

Spin of Cansat due to wind

Plan of Improvement:

Do higher altitude testing

Use single parachute

Use more parachutes

UAH Space Hardware Club

Comparison of CONOPS UAH Space Hardware Club 30 minutes Preparation Ground Station Setup Communication verification Packing parachute Cleared flight recorder Update flight software Final system checkout Flight Turn on Cansat Insert cansat into rocket Start transmission Launch Flight Recovery

Questions? UAH Space Hardware Club