Gateway To Space

Response to ProposalTeam Ochocinco

Brynn Larson Trey KarstenTerek Campbell Marcus FloresMarcell Smalley Shunsuke Miyazaki

OchoCinco 1

BalloonSat

Overview & Mission StatementThe BalloonSat from Team Ochocinco will be sent into space in order to test the

intensity of sunlight on both Earth and at the altitude limit of a weather balloon (100,000 ft.). The mission will include measurements of the loss of the efficiency of solar cells; typical solar cells lose from 0.025% to 0.075% of their efficiency per C degree as temperature increases above 28 C degree. As for the mission plan, two Li-ion batteries will be equipped in satellite to be charged by solar cells and compared to the charge time on earth. The secondary mission will be to collect space materials using Aerogel. For this mission, the satellite will have a small compartment that can be opened in space using a mechanism powered by solar cells, but there will be a back-up power source equipped in case of failure.

Our group has chosen these experiments because they were not only both very different, but they would be very challenging.  There is a lot of research being done about solar panels and space because of high solar input power density in that environment, and we want to create a new experiment to expand off our already known knowledge.  We plan to acquire the solar efficiency of solar cells at 100,000 feet and ground level, the charge time of 9V batteries at both locations, and to analyze any material or data that we collect from the Aerogel.

AVR Board

Technical OverviewOur group is planning on attaching solar cells to the exterior of our BalloonSat in order to

measure solar efficiency. We will test the BalloonSat on ground level and then when it is launched into space perform the same tests to compare the data. With the Aerogel experiment

2 OchoCinco

we will create a mechanism in order to open a compartment to expose the Aerogel to the atmosphere and whatever particles may exist. We will then analyze these particles in order to have a better understand the composition of the atmosphere.

We order all of our hardware, gather it, and input it into the satellite following our sketches. We will test each component seperatally, and once passed, we will intergrate everything into one and test it as a whole. If further adjustment need to be made, it will be do so as soon as humanly possible to ensure a successful flight on the launch date. We will test all equipment with either checking the electronics and making sure everything is intergrated correctly, test each commponent (camera, heaters, ext.) and see if we have an issues, we will do several drops with our sturcture and other extreme style of testing to make sure the integrity of it will hold. To make sure everyone is safe, we will conduct a safety briefing before each type of testing that lies outside of classroom time. We will also have a minimum of two (2) spotters to makes sure nothing hazardous is going on. As of now we have no special features with our satellite; we feel that the simpler the better for this style of experimentation. Before testing/launch, we will turn on all of our components, assuming we have completed all of our testing and feel comfortable with it, and let the satellite go. We plan on using the HOBO to store the data for during the experiment to record the full time for all data (every moment with the satellite, every 3-5min with pictures, Aerogel only at the top of the flight for a few seconds before burst). After retreiveing our data we will download everything from the HOBO to a computer and analyze the data and come up with our conclusions. To meet all of the RFP requirments, will have a checklist that we will constantly be updating after each task.

OchoCinco 3

BalloonSat

Hardware Discussion Form core -The form core house all subsystems and protect them from shock forces

during the flight. Form core will be provided.

AVR with Accel on board-AVR is 8-bit RISC single chip micro controller with program and data stored in separate physical memory systems that appears in different address spaces. Acceleration is measured over time with AVR is provided.

HOBO Data logger - HOBO records data over given time with temperature, pressure sensor and current sensor. HOBO is provided.

External/Internal Temperature sensor - These sensors allow to measure the temperature of internal and external of satellite during flight.

Pressure Sensor - Pressure sensor is used to detect internal pressure of satellite. Pressure sensor is provided.

Canon Digital Camera / 2GB memory card- Camera is used to image the curvature id the earth during flight and data will be stored in 2GB memory card. These items are provided.

Heating system - Heating system serves to keep the internal temperature of payload above -10 C degree. Heating system is provided.

Batteries - two AA lithium batteries are provided for Canon Digital Camera and two 9V batteries for AVR and two 9V batteries for heating system.

Solar cell s - Each of the six sides of the cube satellite will have a two-solar cell panel built on a PCB substrate. Each solar cell has a nominal voltage of 4.2V and an efficiency rating of 23%. This yields a maximum power output of 0.924W per cell. Solar cells interface to HOBO via current sensor. Solar cells are purchased at the shop sun dance solar.

Charger manager (LTC1760)- LTC1760 will control which of the power sources provides power to the satellite and batteries at any given time. LTC 1760 interfaces to HOBO via converter. Charger manager is purchased at Linear Technology Inc.

Current sensor (MAX4070 current sensor) - Each solar panel has current sensor in series between the panel and the charger manager.

Li-ion battery -Li-ion buttery can be used to store electric power and provide power when turning off the 9V main butteries. There are two butteries packs connected in parallel. The packs have a nominal voltage of 7.4 V and a capacity of 600mAh. Each pack has fuel gauging and protection circuitry which interfaces to the LTC 1760 charger manager. These can be purchased at Ultra battery Inc.

4 OchoCinco

Buck converter - since each of the subsystems require a different operating voltage, two converters are used. Converters connect the charger between the manager and each subsystem.

Batter charger (MITSUMI’s MM1485 IC) - MM1485 IC is used for the control of Li-ion battery charging. This IC's functions are constant current, constant voltage charging and pre charge battery condition check. MM1485 can detect battery temperature. MM1485 connect Li-ion battery and charger manager. This is purchaced at Mitsumi Inc.

Safety Rule Wearing safety goggle when soldering Check that no one will be struck by the satellite when it falls when performing the

structural test. Do not overcharges, force charge, short-circuit, heat, or place the battery near a direct

flame. Any of the above actions could cause it to ignite, explode or become damage. Take safety orientation before using manufacturing center.

Data RetrievingThe HOBO collects temperature, pressure, and current data. AVR record the acceleration during the time given. Excel spreadsheets and MATLab will use to take those data from the HOBOs and analysis power generated by solar cells; degrade of the efficiency of solar cells, and the rate of charge/discharge of Li-ion batteries. After recovering the satellite, aerojel will be analyzed by science methods.

OchoCinco 5

BalloonSat

Requirements

We will follow by and accomplish all of the requirements set up by the instructor and the packet. We will meet all of the suspense’s and all guidelines set forth to us by the document with having safety as our number one priority.

6 OchoCinco

OchoCinco 7

ScheduleDate Plan TimeSeptember 17th In-Class Meeting 9:30-10:45amSeptember 20th Team Meeting 6-7pmSeptember 22nd Conceptual Design Review DUE 8:00amSeptember 23rd Team Meeting 3:30-4:30pmSeptember 27th Hands-On Microcontroller,

Camera, and Heater3-9pm

September 29th Authority to Proceed & Hardware Ordering

9:30-10:45am

September 30th Team Meeting 3:30-4:30pmOctober 4th Team Meeting 6-7pmOctober 6th Critical Design Review DUE 8:00amOctober 7th Team Meeting 3:30-4:30pmOctober 8th Critical Design Review DUE 8:00amOctober 11th Team Meeting 6-7pmOctober 14th Team Meeting 3:30-4:30pmOctober 18th Team Meeting 6-7pmOctober 21st Team Meeting 3:30pmOctober 25th Team Meeting 6-7pmOctober 27th Pre-Launch Inspection 9:30-10:45amOctober 28th Team Meeting 3:30-4:30pmOctober 29th In-Class Mission

Simulation Test9:30-10:45am

November 1st Team Meeting 6-7pmNovember 3rd Launch Readiness Review 9:30-10:45amNovember 4th Team Meeting 3:30-4:30pmNovember 6th Final Weigh-in By 2:00pmNovember 7th Launch Day! 5:00am-4:00pmNovember 8th Team Meeting 6-7pmNovember 11th Team Meeting 3:30-4:30pmNovember 15th Team Meeting 6-7pmNovember 18th Team Meeting 3:30-4:30pmDecember 1st Final Presentations DUE 8:00am

BalloonSat

Organizational Chart

Brynn Larson720-936-7985

C&DH Programming, Data collection

Trey Karsten303-204-5005

Mission Analyst Budget, Schedule, Research,

Terek Campbell303-217-6378

C&DH Camera Programming, Communications

Shunsuke Miyazaki256-361-5390

Electronical Power Subsystem (EMP)

Batteries, Solar Panels,

Marcus Flores Environment and Life support Subsystem (ECLSS)

External Temperature Cable, Heating System

Marcell Smalley3039095476

Structure and Mechanism (SAM) Foam Core, Solar Panels, Mechanisms

Biographies*Brynn Larson-Born and raised in Colorado, studying Open Option engineering at CU this year. She enjoys everything about the universe and Britney Spears.*Trey Karsten- Trey was born in Arizona, but grew up in Colorado. This will be his 4th year at CU and is currently studying astronomy. He graduates in May and is moving to Alabama to work for the Air Force. He enjoys snowboarding, skydiving, and most outdoor activities. *Terek Campbell- Terek was born in Englewood, Colorado and lived throughout the state for his whole life. He is a freshman at CU studying computer science which he has been interested in since he was 7. He enjoys hanging out with friends, playing videogames, and not being on crutches.*Shunsuke Miyazaki-Shunsuke was born in Japan He is Aerospace engineering major with Applied math and Economics minor. The interest studies is bioastronautics engineering, space elevator, Aerodynamics, and space-based solar power system. He enjoys travelling, watching sport. *Marcus Flores-Marcus was born in Colorado and grew up here and in Maryland. He is a photographer and plans to make money off of it. He also wants to be an astronaut. He enjoys music, sports, and CU. *Marcell Smalley- Marcell was born on August 3rd, 1991 in Bemidji Minnesota. She is a freshman at CU this year studying Aerospace engineering. She enjoys swimming, volleyball, fun y movies, and hanging out with friends.

Budget

There will be various items needed to accomplish this mission; such as…

8 OchoCinco

External Temperature Cable Heating SystemAVR Microcontroller BoardCamera with a 2GB Memory CardInternal Pressure and Temperature gages*AeroGel *Mirrors*Solar Panels*Dry IceHOBO data logger*Foam Core*Flight Batteries (6 Lithium 9V, 2 Lithium AA, and 3 Alkaline 9V)Hot Glue VelcroAluminum TapeInsulation

Most of these items/monetary needs will be provided The Colorado Space Grant Consortium, The University of Colorado at Boulder Department of Aerospace Engineering Science, and the Edge of Space Sciences. These organizations are expected to award approximately $1,000 under this solicitation and reserve the right to partially fund proposals. Trey Karsten will be taking care of all budget related issues and keep track of it but compiling, sorting, and organizing all bills through an excel spreadsheet.

The items that are stared are the items that the groups as a whole will pay for. With the strict guidelines given, each team member will not exceed $25 each (or $150 total) out of their own pockets. If more money is needed, then private donations will be gained and used for the experiment. The cost of the items stared are being over-estimated but are as follows.

AeroGel - $20 (1)Alkaline 9V - $10 (4)Lithium 9V - $25 (6)Lithium AA - $6 (4)Mirrors - $20 (2)Foam Core - $5 (1)Dry Ice - $25 (1 block)Solar Cell (flexible solar cell) - $5.65(10) – order to Sun dance Solar Charger Manager (LTD1760) - $7.95 (1) – order to Linear Technology Inc.Current Sensor (MAX4070) - $2.70(10) – order to MAXIMLi-ion Battery (UBP053048) - $9 (2) – order to Ultralife Battery Inc.Buck Convertor (DC/DC convertor) - $3.95 (2) – order to Linear Technology Inc.Battery Charger (MM1485) - $7.65 (2) – order to Mitsumi Inc.

OchoCinco 9

BalloonSat

10 OchoCinco