SPIRIT of the KoalaProject VOLTCritical Design ReviewAnthony Anglin, Colin Harkins, Dylan Cooper, Thomas Jefferies, Starteya Pais, Joao Mansur, Andrew Trujillo, Dustin Fishelman

Mission Overview Prove the feasibility of using the flow of atmosphere across

the surface of the BalloonSat to generate current Expect to discover that using magnets and the spin of the

satellite will generate current We predict variation in the levels of current that will be

generated We are conducting this mission to determine the feasibility of

using wind to power experiments in future BalloonSats

Flow Down

Flow Down Part 2

Flow Down Part 3

Design Overview Bearings will allow BalloonSat to rotate independently of the

flight tube Magnets attached to the flight tube will rotate within a coil of

wire, generating electric current Current and voltage generated will be measured and

recorded Fins attached to the outside of the cube will be used to

increase the amount of air flow

Ordered Parts Ordered parts include:

Neodymium magnets Sealed, ceramic, stainless steel ball bearings Current and voltage sensor

Order Status: Magnets: Ordered, received Bearings: Ordered, received Current Sensor: Ordered, received

Drawings

Block Diagram

Mass BudgetHardware Weight (g) Quantity SubtotalBearings 9.07 2 18.1437

Magnets 132.297 2 264.594

Current Sensor 1 1 1

Arduino 30 2 60

Ardunio Shield 30 2 60

Copper Wire 34.8 1 34.8

Accelerometer 1 1 1

Pressure Sensor 1 1 1

Temperature Sensor 1 2 2

GoPro 167 1 167

Camera 130 1 130

Humidity Sensor 1 1 1

Batteries 40 6 240

Total n/a n/a 980.5377

Economic BudgetHardware Cost Quantity S/H Subtotal

Bearings 14.95 2 6.11 36.01

Magnets 19.99 2 6.65 46.63

Current Sensor

19.95 1 0 19.95

Total n/a n/a n/a 102.59

Schedule

September 28th – Turn in proposal (4:00 pm)

September 30th - Team Meeting October 2nd – CoDR Presentations October 3rd – Team Meeting October 4th – Order all the hardware October 5th – Authority to Proceed

October 7th – Finalize design + Team meeting

October 10th – Team meeting October 13th – Acquired all hardware October 14th – Begin construction +

Team meeting October 17th – Team meeting October 18th – Design Document Rev

A/B (7:00 am) + pCDR Slides Due (7:00 am)

October 21st – Team meeting October 28th – Testing Day + Team

meeting

November 4th – Finalize programming + Team meeting

November 7th – Team meeting November 13th – In-Class demo November 14th – Team meeting November 16th – Design Document Rev

C November 18th – Team meeting November 25th – Finalize satellite and

prep for launch November 27th – LRR Slides Due (7:00

am) November 28th – FINAL Team meeting November 30th – Final Weigh-in December 1st – Launch day December 8th – ITLL Design Expo +

Design Document Rev D Due + Extra Credit Video

December 11th – Final Presentations and Reports

Proposal Requirements Our BalloonSat will generate electricity, powered by the rotation of

the BallonSat Using magnets rotating through coils of wire

A GO PRO video camera will be used to image the flight Attached inside of cube opposite of the camera

BalloonSat will be recovered GPS and the string will keep them all attached and able to be discovered

Flight String will attach to the BalloonSat through a PVC pipe Must be tied very tightly to ensure the pipe does not spin, only the cube

Temperature will remain above -10 degrees Celsius Through dry ice testing and multiple layers of insulation

Weight will not exceed 1125 grams Our weight budget shows we will not exceed

A three axis accelerometer will be used to measure acceleration during the flight Shown in our block diagram, will be attached to Arduino

Proposal Requirements 2 Design will allow for an Arduino UNO and related

components Shown in our block diagram and drawings

External temperatures will be measured Shown in block diagrams

Canon A570IS will be used to image the environment Placed facing outwards, opposite side of GO Pro

An active heater system will be used to maintain interior temperature Shown in our block diagram

A visual indicator on the exterior of the BalloonSat will allow SOK to confirm that the payload ready is for launch Will use an LED light attached to the inside to indicate launch

preparedness

Test Plan Tests will include drop tests, cooler tests, subsystems tests,

functional tests, whip tests, and mission simulation tests Will experiment with different fin types to conclude which one

will create the most drag and spin Mission Simulation will include spinning the cube by hand,

and taking it to the wind tunnel for testing Already have done drop at DLC and some whip tests Future tests will include dry ice cooling, and more whip tests

Test Schedule October 7th – Drop Test October 21st – Spin Test October 28th – Sensor Testing (Pressure, humidity,

accelerator, temperature) November 4th – Functional Test (Generator testing) November 11th – Subsystem Test (External and internal) November 18th – Cooler Testing November 25th – Mission Simulation Test

First Draft Thoughts Expect to see spin created by the fins and the rotation on the

BalloonSat From this spin there will be evidence of current and voltage

created Will show that we can supply voltage for most of the

experiment, but not entirely Results will prove that using the rotation is a sufficient

method of running an experiment

Organization ChartName: Major: Task:

Andrew Trujillo Astrophysics Researcher

Starteya Pais Aerospace Engineering Researcher/Secretary

Joao Mansur Aerospace Engineering Researcher/ Solderer

Thomas Jeffries Aerospace Engineering Team Leader/Budget Manager

Colin Harkins Open Option Engineering Secretary/Structural Design

Dustin Fishelman Aerospace Engineering Coordinator/Structural Design

Dylan Cooper Aerospace Engineering Lead Programmer

Anthony Anglin Aerospace Engineering Coordinator/Researcher

Biggest Worries Will not generate current Magnets will not properly rotate through coils Not enough spin during flight Fins will break off