Optimus Prime~University of Alabama in Huntsville~

Flight Review

AIAA Cansat Competition 2008June 15, 2008

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

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

Design overview

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Legs

Temperature sensor

Servo

Spring

Parachute string

Avionics board

Batteries

Corrugated plastic wall

Mechanical Drawings

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Leg Deployment Mechanism (Movie)

Carbon rod leg

Mass Budget

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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

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Controller Unit

Servo

Pressure Sensor

Temperature Sensors

Accelerometer

ADCTransmitter

5V Regulator

Battery

EEPROMI2C

Analog output

SPI

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

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

Pressure

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Altitude

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H=(PC-PG)*-89.92

Retrieved from vacuum chamber test

Descent Rate Analysis- Entire Flight

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Descent Rate Analysis- from Apogee to Landing

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Average:

7.03 m/s

Ground Temperature Measurement

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48.56 °C

Acceleration

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Outcome of Operations Pressure (Altitude) Acceleration Ground Temperature Data Transmission Control Software Stood upright Parachute Release

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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

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Comparison of CONOPS

Preparation

Ground Station Setup

Communication verification

Packing parachute

Cleared flight recorder

Update flight software

Final system checkout

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30 m

inut

es

Flight

Turn on Cansat

Insert cansat into rocket

Start transmission

Launch

Flight

Recovery

Questions?

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