Team 2 Careful HarryGlenda AlvarengaJ.J. BusseEmily EggersAdam KempGabrielle MassoneDalton SmithCorey Wilson

DynamoCritical Design Review

Mission Overview To investigate small scale, high altitude kinetic power

generation and assess its applications to present and

future spacecraft

Hope to prove turbulence of flight can be harnessed as

a viable energy source in an otherwise inhospitable

environment

Hypothesis: greater turbulence and motion during flight

will generate greater amounts of power.

Mission Overview Why?

Provide alternative power source for present and future spacecraft

Determine which variables (altitude, acceleration, air currents, etc…) produce most turbulence and power

Indirectly study physical stresses of a spacecraft during launch, flight, recovery, etc…

Possible influence on future spacecraft structures

Requirements Flow Down

Shall design and build a BalloonSat to study the potential of high altitude kinetic power generation

Level 0.0

Structure capable of carrying payload to

30km and back

Level 1.0

Kinetic Energy Generator shall

convert mechanical energy into electrical

Level 1.0

C&DH system capable of monitoring

all sensors and recording data

Level 1.0

Capable of recording image/video and data

on environmental variables

Level 1.0

Schedule and budget to maintain time and

cost constraints

Level 1.0

Design Overview

Dynamo StructureTop-Down 2 Dimensional View

Dynamo StructureCorner Perspective 3 Dimensional

View

Kinetic Energy Generator

Design Overview

• Changes: Elimination of parabolic motion of magnet, magnets now inside coil.

K.E.G. Continued• Inside the coil there shall be a rectangular

compartment fitted to the size of 4 disk magnets stacked to form cylinder

• Sideways motion will cause the magnets to roll within compartment along coil, causing magnetic flux & inducing an electromotive force (voltage) in coil.

K.E.G. Continued• Estimated .4 volts or .2 amps will be

generated with 100 mph wind (45 m/s) and 24 gauge copper wire for the material of the coil.

• 100 mph winds are typically generated within the jet stream, between 7500 – 15000 m

• Arduino Uno– 9V battery through Voltage regulator– Source code written in open source Arduino compiler

• AttoPilot Current/Voltage Sensor• Triple Axis Accelerometer• Both Analog sensors – 10-bit ADC in chip allows

for 1024 steps of accuracy in digital data values

Arduino System

Camera Canon SD780 (A780) Take pictures at 10 second intervals for the

majority of the trip (about 80 minutes out of 90) Programmed to take video clips at 3 separate

times. During launch During the anticipated burst of the balloon During anticipated landing

In bottom corner of the satellite with lens pointed outward

Wired to a switch on the outside of our BalloonSat for easy activation

2GB SD card to store the images and video clips Images and Video viewed on Corey’s on-site

laptop after landing

HOBO• Record internal/external temperature and

relative humidity.• Located in one of the corners of the

BalloonSat.• Boxcar program on Corey’s Windows XP

laptop.• HOBO programmed to start collecting data

at launch• Upon retrieval, data will be directly uploaded

to Corey’s laptop

Functional Block Diagram

Team Organization

Gabrielle MassoneTeam Leader

C&DH, Systems

Glenda AlvarengaPower and Data Collection

Adam KempPower Generation

Emily EggersBusiness Management

Power and Data Collection

Corey WilsonStructural Design

Dalton SmithStructural Design

J.J. BusseC&DH, Science

Budget

Total Weight: 659.9 gTotal Cost: $157.5

Date             Schedule9/27/2011 Turn in order form for mechanical components9/29/2011 Team Meeting (4-6pm)10/3-7/2011 Assemble satellite structure, Kinetic Energy Generator, and HW 05 heater10/3/2011                  Complete Design Document Revisions A/B and CDR10/4/2011   Design Document Revisions A/B due 7:00 am, CDR Presentation10/3-7/2011   Structure Testing (whip, kick, and drop tests)10/6/2011    Team Meeting (4-6pm)10/10-14/2011             Generator motion tests (vibration and sway tests)10/13/2011                  Team Meeting (4-6pm)10/20/2011                   Team Meeting (4-6pm)10/24/2011                   Complete testing; final satellite and generator completed10/25/2011                  Pre-launch inspection10/27/2011                  In-class mission simulation test; Team Meeting (4-6pm)11/1/2011                    Launch Readiness Review (LRR) presentation due at 7:00 am11/1/2011                    Design Document Revision C due at 7:00 am11/3/2011                    Team Meeting (4-6pm)11/4/2011                    Final Dynamo satellite weigh-in and turn-in11/5/2011                    Launch Day (4:45am-TBD)11/5-28/2011                Data analysis and compilation11/29/2011                   Final team presentation and report12/3/2011                    Integrated Technology and Learning Laboratory (ITLL) Design Expo12/6/2011                     Hardware Turn-in in class

Test Plan• Structural and Comprehensive

– Impact Test (10/6/2011)– Whip Test (10/7/2011)– Cold Test (by 10/23/2011)

• Generator– Vibration Tests (10/13/2011)– Oscillation Tests (10/14/2011)– Electrical Circuitry (Throughout)

• Technical Testing– Arduino System (by

10/14/2011)• Source Code (debugging,

etc…)• Accelerometer tests• Voltage Sensor tests• Verify Data collection

– Camera (by 10/20/2011)– HOBO (by 10/20/2011)

Expected Results• Expect the generator to work

– Calculated continuous .2 A, .4 V at 1G

• Most power generated during periods of greatest turbulence– Launch, landing– Jet Stream– Burst

• Correlation between altitude, acceleration, and power generation• Possible correlations between temperature and power generation

– Temperature = by-product of altitude

Biggest Worries• Generator doesn’t work• Generator works, but doesn’t produce enough

voltage and current for the sensor to see measurable changes over time

• Arduino programming/assembly glitches• General technical malfunctions in

programming, circuitry/wiring, etc…