Cansat 2008: University of Alabama in Huntsville Final Presentation
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Transcript of Cansat 2008: University of Alabama in Huntsville Final Presentation
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Optimus Prime~University of Alabama in Huntsville~
Flight Review
AIAA Cansat Competition 2008June 15, 2008
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Team RosterStudents 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
2UAH Space Hardware Club
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1. Construct & deliver a flight model2. Perfect minimum requirements3. Complete one bonus
1. Measure ground surface temperature (30pt)
4. Complete other bonuses1. Take a 360 deg. panoramic image (40)2. Measure wind speed & direction @ surface (30)3. Measure temp. 25mm below the surface (40)4. Collect soil sample (50)5. Land autonomously to the given coordinate (50)
Mission Priority & Success Level
3UAH Space Hardware Club
Minimum
Intermediate
Full
Advanced
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Design overview
UAH Space Hardware Club 4
Legs
Temperature sensor
Servo
Spring
Parachute string
Avionics board
Batteries
Corrugated plastic wall
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Mechanical Drawings
UAH Space Hardware Club 5
Leg Deployment Mechanism (Movie)
Carbon rod leg
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Mass Budget
UAH Space Hardware Club 66UAH 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
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Electrical Block Diagram
UAH Space Hardware Club 7
Controller Unit
Servo
Pressure Sensor
Temperature Sensors
Accelerometer
ADCTransmitter
5V Regulator
Battery
EEPROMI2C
Analog output
SPI
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Flow Chart
8UAH 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
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Ground system block diagram
TM-D700
Battery
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
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Pressure
UAH Space Hardware Club 10
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Altitude
UAH Space Hardware Club 11
H=(PC-PG)*-89.92
Retrieved from vacuum chamber test
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Descent Rate Analysis- Entire Flight
UAH Space Hardware Club 12
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Descent Rate Analysis- from Apogee to Landing
UAH Space Hardware Club 13
Average:
7.03 m/s
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Ground Temperature Measurement
UAH Space Hardware Club 14
48.56 °C
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Acceleration
UAH Space Hardware Club 15
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Outcome of Operations Pressure (Altitude) Acceleration Ground Temperature Data Transmission Control Software Stood upright Parachute Release
UAH Space Hardware Club 16
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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 17
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Comparison of CONOPS
Preparation
Ground Station Setup
Communication verification
Packing parachute
Cleared flight recorder
Update flight software
Final system checkout
UAH Space Hardware Club 18
30 m
inut
es
Flight
Turn on Cansat
Insert cansat into rocket
Start transmission
Launch
Flight
Recovery
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Questions?
UAH Space Hardware Club 19