SPIRIT OF THE KOALAPROJECT VOLT

CONCEPTUAL DESIGN REVIEW

Thomas Jeffries, Anthony Anglin, Dylan Cooper,

Dustin Fishelman, Colin Harkins, Joao Mansur, Starteya Pais, Andrew Trujillo

10/2/2012

Mission Overview Send a BalloonSat to an altitude near 30 kilometers Try generating power from the angular velocity of the

BalloonSat Objectives-

Be ready to launch on December 1st, 2012 Record pictures and video of the entire flight Measure variables of the surrounding environment Confirm the feasibility of wind power on BalloonSats

Will contribute to our understanding of how we can make power systems on BalloonSat’s in the future

Power is often the downfall of many experiments operating in conditions similar to ours

Mission Overview Cont. Contribute to the length of experiments we can perform in

the upper atmosphere Over the course of the flight we expect to see a large

difference in the amount of power generated over altitude We also expect to find that the initial turbulence of the

balloon after takeoff will decrease over time We plan to maximize the amount of energy that can be

generated throughout the troposphere By comparing our data to how much was consumed during

flight, we can discover how feasible it is to power a BalloonSat with angular velocity

If successful could be used in subsequent flights of balloons with different designs to supply a longer lasting source of power

Design Structure:

Foam core to create the outer cube, as well as all interior divisions needed Foam core will be used to support the copper wire coils used in the

experimental generator Tape, Velcro, and glue will be used to bind the structure together and

interior components Will be attached to the flight string through a PVC pipe through the center

cube Experimental Power Generation:

Ceramic bearings will attach the PVC pipe, around the string, to the BalloonSat

Allow it to rotate independently of the rope Attached to the PVC pipe on the inside will be magnets The magnet poles will be perpendicular to the length of the tube Copper wire will be coiled parallel to the length of the tube These coils will connect to a voltage sensor to measure current produced

Design Cont. Environmental Sensing:

Measure both the internal and external temperature of the Sat using thermometers

Also use a three-axis accelerometer to measure the movement throughout its journey

A pressure sensor will be used to track the pressure during flight and a humidity sensor to track humidity levels

All sensors will interface into an Arduino Uno and will be recorded on a 2GB Micro-SD card

An active heater system will be used to maintain a temperature above -10 degrees Celsius inside

Imaging: Canon A570IS Digital Camera will be used to capture lower quality

images A GOPRO HERO HD video camera will be used to capture high definition

video during the flight Images will be recorded on 32G Micro-SD card

Design Cont. Testing:

Tests will include drop tests, cooler tests, subsystems tests, functional tests, whip tests, and mission simulation tests

Drop tests with mass models will allow us to determine the structural integrity during impacts

Whip tests allow us to test structural integrity at speeds over Mach 1 Cooler test using dry ice allow us to test in a subzero environment Subsystems will be tested individually to identify errors

Special Features: Propeller Design on the exterior of our box to enhance the angular

velocity during ascent Data:

Recorded by the sensors onto a 2G Micro-SD card during flight During the drop and whip tests data will be obtained visually All other tests data will be obtained either by ringing with a voltmeter or

by connected to our computers

Block Diagram

Drawings

Budget Weight:

Cost List (Out of $250): 5 x 10 x 4 mm Ceramic Ball Bearings (1) – $19.95

Vxb.com Solid Copper wire 100ft (1) – $18.00 – 34.8 grams

Electricalwire.biz 1 x ½ x ½ in Neodymium Magnets (2) - $9.99

Apexmagnets.com Current Sensor (1) - $10.00 Sparkfun.com Voltage Sensor (1) - $.50 Sparkfun.com 1 lb Dry Ice (10) - $20.00 King Soopers 9v Batteries (12) - $25.00 Costco/Sam’s Club

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

Team MembersName: Major: Task:

Andrew Truillo Astrophysics Budget Manager

Starteya Pais Aerospace Engineering

Joao Mansur Aerospace Engineering Solderer

Thomas Jeffries Aerospace Engineering Team Leader

Colin Harkins Open Option Engineering

Dustin Fishelman Aerospace Engineering Scientist

Dylan Cooper Aerospace Engineering Programmer

Anthony Anglin Aerospace Engineering Coordinator